Merge pull request #12351 from adrianeboyd/backport/v3.5.1-1

Backports for v3.5.1

.github/azure-steps.yml

@@ -59,6 +59,11 @@ steps:
     displayName: 'Test download CLI'
     condition: eq(variables['python_version'], '3.8')
 
+  - script: |
+      python -W error -m spacy info ca_core_news_sm | grep -q download_url
+    displayName: 'Test download_url in info CLI'
+    condition: eq(variables['python_version'], '3.8')
+
   - script: |
       python -W error -c "import ca_core_news_sm; nlp = ca_core_news_sm.load(); doc=nlp('test')"
     displayName: 'Test no warnings on load (#11713)'

README.md

@@ -16,6 +16,9 @@ production-ready [**training system**](https://spacy.io/usage/training) and easy
 model packaging, deployment and workflow management. spaCy is commercial
 open-source software, released under the [MIT license](https://github.com/explosion/spaCy/blob/master/LICENSE).
 
+💥 **We'd love to hear more about your experience with spaCy!**
+[Fill out our survey here.](https://form.typeform.com/to/aMel9q9f)
+
 💫 **Version 3.5 out now!**
 [Check out the release notes here.](https://github.com/explosion/spaCy/releases)
 

pyproject.toml

@@ -5,7 +5,7 @@ requires = [
     "cymem>=2.0.2,<2.1.0",
     "preshed>=3.0.2,<3.1.0",
     "murmurhash>=0.28.0,<1.1.0",
-    "thinc>=8.1.0,<8.2.0",
+    "thinc>=8.1.8,<8.2.0",
     "numpy>=1.15.0",
 ]
 build-backend = "setuptools.build_meta"

requirements.txt

@@ -3,7 +3,7 @@ spacy-legacy>=3.0.11,<3.1.0
 spacy-loggers>=1.0.0,<2.0.0
 cymem>=2.0.2,<2.1.0
 preshed>=3.0.2,<3.1.0
-thinc>=8.1.0,<8.2.0
+thinc>=8.1.8,<8.2.0
 ml_datasets>=0.2.0,<0.3.0
 murmurhash>=0.28.0,<1.1.0
 wasabi>=0.9.1,<1.2.0

setup.cfg

@@ -39,7 +39,7 @@ setup_requires =
     cymem>=2.0.2,<2.1.0
     preshed>=3.0.2,<3.1.0
     murmurhash>=0.28.0,<1.1.0
-    thinc>=8.1.0,<8.2.0
+    thinc>=8.1.8,<8.2.0
 install_requires =
     # Our libraries
     spacy-legacy>=3.0.11,<3.1.0
@@ -47,7 +47,7 @@ install_requires =
     murmurhash>=0.28.0,<1.1.0
     cymem>=2.0.2,<2.1.0
     preshed>=3.0.2,<3.1.0
-    thinc>=8.1.0,<8.2.0
+    thinc>=8.1.8,<8.2.0
     wasabi>=0.9.1,<1.2.0
     srsly>=2.4.3,<3.0.0
     catalogue>=2.0.6,<2.1.0

spacy/cli/info.py

@@ -1,6 +1,5 @@
 from typing import Optional, Dict, Any, Union, List
 import platform
-import pkg_resources
 import json
 from pathlib import Path
 from wasabi import Printer, MarkdownRenderer
@@ -10,6 +9,7 @@ from ._util import app, Arg, Opt, string_to_list
 from .download import get_model_filename, get_latest_version
 from .. import util
 from .. import about
+from ..compat import importlib_metadata
 
 
 @app.command("info")
@@ -137,15 +137,14 @@ def info_installed_model_url(model: str) -> Optional[str]:
     dist-info available.
     """
     try:
-        dist = pkg_resources.get_distribution(model)
-        data = json.loads(dist.get_metadata("direct_url.json"))
-        return data["url"]
-    except pkg_resources.DistributionNotFound:
-        # no such package
-        return None
+        dist = importlib_metadata.distribution(model)
+        text = dist.read_text("direct_url.json")
+        if isinstance(text, str):
+            data = json.loads(text)
+            return data["url"]
     except Exception:
-        # something else, like no file or invalid JSON
-        return None
+        pass
+    return None
 
 
 def info_model_url(model: str) -> Dict[str, Any]:

spacy/cli/project/run.py

@@ -2,7 +2,6 @@ from typing import Optional, List, Dict, Sequence, Any, Iterable, Tuple
 import os.path
 from pathlib import Path
 
-import pkg_resources
 from wasabi import msg
 from wasabi.util import locale_escape
 import sys
@@ -331,6 +330,7 @@ def _check_requirements(requirements: List[str]) -> Tuple[bool, bool]:
     RETURNS (Tuple[bool, bool]): Whether (1) any packages couldn't be imported, (2) any packages with version conflicts
         exist.
     """
+    import pkg_resources
 
     failed_pkgs_msgs: List[str] = []
     conflicting_pkgs_msgs: List[str] = []

spacy/cli/templates/quickstart_training.jinja

@@ -3,7 +3,7 @@ the docs and the init config command. It encodes various best practices and
 can help generate the best possible configuration, given a user's requirements. #}
 {%- set use_transformer = hardware != "cpu" and transformer_data -%}
 {%- set transformer = transformer_data[optimize] if use_transformer else {} -%}
-{%- set listener_components = ["tagger", "morphologizer", "parser", "ner", "textcat", "textcat_multilabel", "entity_linker", "spancat", "trainable_lemmatizer"] -%}
+{%- set listener_components = ["tagger", "morphologizer", "parser", "ner", "textcat", "textcat_multilabel", "entity_linker", "spancat", "spancat_singlelabel", "trainable_lemmatizer"] -%}
 [paths]
 train = null
 dev = null
@@ -24,8 +24,11 @@ gpu_allocator = null
 lang = "{{ lang }}"
 {%- set has_textcat = ("textcat" in components or "textcat_multilabel" in components) -%}
 {%- set with_accuracy = optimize == "accuracy" -%}
-{%- set has_accurate_textcat = has_textcat and with_accuracy -%}
-{%- if ("tagger" in components or "morphologizer" in components or "parser" in components or "ner" in components or "spancat" in components or "trainable_lemmatizer" in components or "entity_linker" in components or has_accurate_textcat) -%}
+{# The BOW textcat doesn't need a source of features, so it can omit the
+tok2vec/transformer. #}
+{%- set with_accuracy_or_transformer = (use_transformer or with_accuracy) -%}
+{%- set textcat_needs_features = has_textcat and with_accuracy_or_transformer -%}
+{%- if ("tagger" in components or "morphologizer" in components or "parser" in components or "ner" in components or "spancat" in components or "spancat_singlelabel" in components or "trainable_lemmatizer" in components or "entity_linker" in components or textcat_needs_features) -%}
 {%- set full_pipeline = ["transformer" if use_transformer else "tok2vec"] + components -%}
 {%- else -%}
 {%- set full_pipeline = components -%}
@@ -156,6 +159,36 @@ grad_factor = 1.0
 sizes = [1,2,3]
 {% endif -%}
 
+{% if "spancat_singlelabel" in components %}
+[components.spancat_singlelabel]
+factory = "spancat_singlelabel"
+negative_weight = 1.0
+allow_overlap = true
+scorer = {"@scorers":"spacy.spancat_scorer.v1"}
+spans_key = "sc"
+
+[components.spancat_singlelabel.model]
+@architectures = "spacy.SpanCategorizer.v1"
+
+[components.spancat_singlelabel.model.reducer]
+@layers = "spacy.mean_max_reducer.v1"
+hidden_size = 128
+
+[components.spancat_singlelabel.model.scorer]
+@layers = "Softmax.v2"
+
+[components.spancat_singlelabel.model.tok2vec]
+@architectures = "spacy-transformers.TransformerListener.v1"
+grad_factor = 1.0
+
+[components.spancat_singlelabel.model.tok2vec.pooling]
+@layers = "reduce_mean.v1"
+
+[components.spancat_singlelabel.suggester]
+@misc = "spacy.ngram_suggester.v1"
+sizes = [1,2,3]
+{% endif %}
+
 {% if "trainable_lemmatizer" in components -%}
 [components.trainable_lemmatizer]
 factory = "trainable_lemmatizer"
@@ -221,10 +254,16 @@ no_output_layer = false
 
 {% else -%}
 [components.textcat.model]
-@architectures = "spacy.TextCatBOW.v2"
+@architectures = "spacy.TextCatCNN.v2"
 exclusive_classes = true
-ngram_size = 1
-no_output_layer = false
+nO = null
+
+[components.textcat.model.tok2vec]
+@architectures = "spacy-transformers.TransformerListener.v1"
+grad_factor = 1.0
+
+[components.textcat.model.tok2vec.pooling]
+@layers = "reduce_mean.v1"
 {%- endif %}
 {%- endif %}
 
@@ -252,10 +291,16 @@ no_output_layer = false
 
 {% else -%}
 [components.textcat_multilabel.model]
-@architectures = "spacy.TextCatBOW.v2"
+@architectures = "spacy.TextCatCNN.v2"
 exclusive_classes = false
-ngram_size = 1
-no_output_layer = false
+nO = null
+
+[components.textcat_multilabel.model.tok2vec]
+@architectures = "spacy-transformers.TransformerListener.v1"
+grad_factor = 1.0
+
+[components.textcat_multilabel.model.tok2vec.pooling]
+@layers = "reduce_mean.v1"
 {%- endif %}
 {%- endif %}
 
@@ -374,6 +419,33 @@ width = ${components.tok2vec.model.encode.width}
 sizes = [1,2,3]
 {% endif %}
 
+{% if "spancat_singlelabel" in components %}
+[components.spancat_singlelabel]
+factory = "spancat_singlelabel"
+negative_weight = 1.0
+allow_overlap = true
+scorer = {"@scorers":"spacy.spancat_scorer.v1"}
+spans_key = "sc"
+
+[components.spancat_singlelabel.model]
+@architectures = "spacy.SpanCategorizer.v1"
+
+[components.spancat_singlelabel.model.reducer]
+@layers = "spacy.mean_max_reducer.v1"
+hidden_size = 128
+
+[components.spancat_singlelabel.model.scorer]
+@layers = "Softmax.v2"
+
+[components.spancat_singlelabel.model.tok2vec]
+@architectures = "spacy.Tok2VecListener.v1"
+width = ${components.tok2vec.model.encode.width}
+
+[components.spancat_singlelabel.suggester]
+@misc = "spacy.ngram_suggester.v1"
+sizes = [1,2,3]
+{% endif %}
+
 {% if "trainable_lemmatizer" in components -%}
 [components.trainable_lemmatizer]
 factory = "trainable_lemmatizer"

spacy/errors.py

@@ -444,8 +444,7 @@ class Errors(metaclass=ErrorsWithCodes):
     E133 = ("The sum of prior probabilities for alias '{alias}' should not "
             "exceed 1, but found {sum}.")
     E134 = ("Entity '{entity}' is not defined in the Knowledge Base.")
-    E139 = ("Knowledge base for component '{name}' is empty. Use the methods "
-            "`kb.add_entity` and `kb.add_alias` to add entries.")
+    E139 = ("Knowledge base for component '{name}' is empty.")
     E140 = ("The list of entities, prior probabilities and entity vectors "
             "should be of equal length.")
     E141 = ("Entity vectors should be of length {required} instead of the "
@@ -550,6 +549,8 @@ class Errors(metaclass=ErrorsWithCodes):
             "during training, make sure to include it in 'annotating components'")
 
     # New errors added in v3.x
+    E850 = ("The PretrainVectors objective currently only supports default "
+            "vectors, not {mode} vectors.")
     E851 = ("The 'textcat' component labels should only have values of 0 or 1, "
             "but found value of '{val}'.")
     E852 = ("The tar file pulled from the remote attempted an unsafe path "
@@ -967,7 +968,8 @@ class Errors(metaclass=ErrorsWithCodes):
     E1049 = ("No available port found for displaCy on host {host}. Please specify an available port "
              "with `displacy.serve(doc, port=port)`")
     E1050 = ("Port {port} is already in use. Please specify an available port with `displacy.serve(doc, port=port)` "
-             "or use `auto_switch_port=True` to pick an available port automatically.")
+             "or use `auto_select_port=True` to pick an available port automatically.")
+    E1051 = ("'allow_overlap' can only be False when max_positive is 1, but found 'max_positive': {max_positive}.")
 
 
 # Deprecated model shortcuts, only used in errors and warnings

spacy/kb/kb_in_memory.pyx

@@ -46,6 +46,9 @@ cdef class InMemoryLookupKB(KnowledgeBase):
         self._alias_index = PreshMap(nr_aliases + 1)
         self._aliases_table = alias_vec(nr_aliases + 1)
 
+    def is_empty(self):
+        return len(self) == 0
+
     def __len__(self):
         return self.get_size_entities()
 

spacy/lexeme.pyi

@@ -25,7 +25,8 @@ class Lexeme:
     def orth_(self) -> str: ...
     @property
     def text(self) -> str: ...
-    lower: str
+    orth: int
+    lower: int
     norm: int
     shape: int
     prefix: int

spacy/lexeme.pyx

@@ -199,7 +199,7 @@ cdef class Lexeme:
         return self.orth_
 
     property lower:
-        """RETURNS (str): Lowercase form of the lexeme."""
+        """RETURNS (uint64): Lowercase form of the lexeme."""
         def __get__(self):
             return self.c.lower
 

spacy/matcher/dependencymatcher.pyx

@@ -82,8 +82,12 @@ cdef class DependencyMatcher:
             "$-": self._imm_left_sib,
             "$++": self._right_sib,
             "$--": self._left_sib,
+            ">+": self._imm_right_child,
+            ">-": self._imm_left_child,
             ">++": self._right_child,
             ">--": self._left_child,
+            "<+": self._imm_right_parent,
+            "<-": self._imm_left_parent,
             "<++": self._right_parent,
             "<--": self._left_parent,
         }
@@ -427,12 +431,34 @@ cdef class DependencyMatcher:
     def _left_sib(self, doc, node):
         return [doc[child.i] for child in doc[node].head.children if child.i < node]
 
+    def _imm_right_child(self, doc, node):
+        for child in doc[node].children:
+            if child.i == node + 1:
+                return [doc[child.i]]
+        return []
+
+    def _imm_left_child(self, doc, node):
+        for child in doc[node].children:
+            if child.i == node - 1:
+                return [doc[child.i]]
+        return []
+
     def _right_child(self, doc, node):
         return [doc[child.i] for child in doc[node].children if child.i > node]
     
     def _left_child(self, doc, node):
         return [doc[child.i] for child in doc[node].children if child.i < node]
 
+    def _imm_right_parent(self, doc, node):
+        if doc[node].head.i == node + 1:
+            return [doc[node].head]
+        return []
+
+    def _imm_left_parent(self, doc, node):
+        if doc[node].head.i == node - 1:
+            return [doc[node].head]
+        return []
+
     def _right_parent(self, doc, node):
         if doc[node].head.i > node:
             return [doc[node].head]

spacy/ml/models/entity_linker.py

@@ -89,6 +89,14 @@ def load_kb(
     return kb_from_file
 
 
+@registry.misc("spacy.EmptyKB.v2")
+def empty_kb_for_config() -> Callable[[Vocab, int], KnowledgeBase]:
+    def empty_kb_factory(vocab: Vocab, entity_vector_length: int):
+        return InMemoryLookupKB(vocab=vocab, entity_vector_length=entity_vector_length)
+
+    return empty_kb_factory
+
+
 @registry.misc("spacy.EmptyKB.v1")
 def empty_kb(
     entity_vector_length: int,

spacy/ml/models/multi_task.py

@@ -8,6 +8,7 @@ from thinc.loss import Loss
 from ...util import registry, OOV_RANK
 from ...errors import Errors
 from ...attrs import ID
+from ...vectors import Mode as VectorsMode
 
 import numpy
 from functools import partial
@@ -23,6 +24,8 @@ def create_pretrain_vectors(
     maxout_pieces: int, hidden_size: int, loss: str
 ) -> Callable[["Vocab", Model], Model]:
     def create_vectors_objective(vocab: "Vocab", tok2vec: Model) -> Model:
+        if vocab.vectors.mode != VectorsMode.default:
+            raise ValueError(Errors.E850.format(mode=vocab.vectors.mode))
         if vocab.vectors.shape[1] == 0:
             raise ValueError(Errors.E875)
         model = build_cloze_multi_task_model(

spacy/pipeline/entity_linker.py

@@ -54,6 +54,7 @@ DEFAULT_NEL_MODEL = Config().from_str(default_model_config)["model"]
         "entity_vector_length": 64,
         "get_candidates": {"@misc": "spacy.CandidateGenerator.v1"},
         "get_candidates_batch": {"@misc": "spacy.CandidateBatchGenerator.v1"},
+        "generate_empty_kb": {"@misc": "spacy.EmptyKB.v2"},
         "overwrite": True,
         "scorer": {"@scorers": "spacy.entity_linker_scorer.v1"},
         "use_gold_ents": True,
@@ -80,6 +81,7 @@ def make_entity_linker(
     get_candidates_batch: Callable[
         [KnowledgeBase, Iterable[Span]], Iterable[Iterable[Candidate]]
     ],
+    generate_empty_kb: Callable[[Vocab, int], KnowledgeBase],
     overwrite: bool,
     scorer: Optional[Callable],
     use_gold_ents: bool,
@@ -101,6 +103,7 @@ def make_entity_linker(
     get_candidates_batch (
         Callable[[KnowledgeBase, Iterable[Span]], Iterable[Iterable[Candidate]]], Iterable[Candidate]]
         ): Function that produces a list of candidates, given a certain knowledge base and several textual mentions.
+    generate_empty_kb (Callable[[Vocab, int], KnowledgeBase]): Callable returning empty KnowledgeBase.
     scorer (Optional[Callable]): The scoring method.
     use_gold_ents (bool): Whether to copy entities from gold docs or not. If false, another
         component must provide entity annotations.
@@ -135,6 +138,7 @@ def make_entity_linker(
         entity_vector_length=entity_vector_length,
         get_candidates=get_candidates,
         get_candidates_batch=get_candidates_batch,
+        generate_empty_kb=generate_empty_kb,
         overwrite=overwrite,
         scorer=scorer,
         use_gold_ents=use_gold_ents,
@@ -175,6 +179,7 @@ class EntityLinker(TrainablePipe):
         get_candidates_batch: Callable[
             [KnowledgeBase, Iterable[Span]], Iterable[Iterable[Candidate]]
         ],
+        generate_empty_kb: Callable[[Vocab, int], KnowledgeBase],
         overwrite: bool = BACKWARD_OVERWRITE,
         scorer: Optional[Callable] = entity_linker_score,
         use_gold_ents: bool,
@@ -198,6 +203,7 @@ class EntityLinker(TrainablePipe):
             Callable[[KnowledgeBase, Iterable[Span]], Iterable[Iterable[Candidate]]],
             Iterable[Candidate]]
             ): Function that produces a list of candidates, given a certain knowledge base and several textual mentions.
+        generate_empty_kb (Callable[[Vocab, int], KnowledgeBase]): Callable returning empty KnowledgeBase.
         scorer (Optional[Callable]): The scoring method. Defaults to Scorer.score_links.
         use_gold_ents (bool): Whether to copy entities from gold docs or not. If false, another
             component must provide entity annotations.
@@ -220,6 +226,7 @@ class EntityLinker(TrainablePipe):
         self.model = model
         self.name = name
         self.labels_discard = list(labels_discard)
+        # how many neighbour sentences to take into account
         self.n_sents = n_sents
         self.incl_prior = incl_prior
         self.incl_context = incl_context
@@ -227,9 +234,7 @@ class EntityLinker(TrainablePipe):
         self.get_candidates_batch = get_candidates_batch
         self.cfg: Dict[str, Any] = {"overwrite": overwrite}
         self.distance = CosineDistance(normalize=False)
-        # how many neighbour sentences to take into account
-        # create an empty KB by default
-        self.kb = empty_kb(entity_vector_length)(self.vocab)
+        self.kb = generate_empty_kb(self.vocab, entity_vector_length)
         self.scorer = scorer
         self.use_gold_ents = use_gold_ents
         self.candidates_batch_size = candidates_batch_size
@@ -250,7 +255,7 @@ class EntityLinker(TrainablePipe):
         # Raise an error if the knowledge base is not initialized.
         if self.kb is None:
             raise ValueError(Errors.E1018.format(name=self.name))
-        if len(self.kb) == 0:
+        if hasattr(self.kb, "is_empty") and self.kb.is_empty():
             raise ValueError(Errors.E139.format(name=self.name))
 
     def initialize(

spacy/pipeline/spancat.py

@@ -1,4 +1,5 @@
-from typing import List, Dict, Callable, Tuple, Optional, Iterable, Any
+from typing import List, Dict, Callable, Tuple, Optional, Iterable, Any, cast, Union
+from dataclasses import dataclass
 from thinc.api import Config, Model, get_current_ops, set_dropout_rate, Ops
 from thinc.api import Optimizer
 from thinc.types import Ragged, Ints2d, Floats2d
@@ -43,7 +44,36 @@ maxout_pieces = 3
 depth = 4
 """
 
+spancat_singlelabel_default_config = """
+[model]
+@architectures = "spacy.SpanCategorizer.v1"
+scorer = {"@layers": "Softmax.v2"}
+
+[model.reducer]
+@layers = spacy.mean_max_reducer.v1
+hidden_size = 128
+
+[model.tok2vec]
+@architectures = "spacy.Tok2Vec.v2"
+[model.tok2vec.embed]
+@architectures = "spacy.MultiHashEmbed.v1"
+width = 96
+rows = [5000, 1000, 2500, 1000]
+attrs = ["NORM", "PREFIX", "SUFFIX", "SHAPE"]
+include_static_vectors = false
+
+[model.tok2vec.encode]
+@architectures = "spacy.MaxoutWindowEncoder.v2"
+width = ${model.tok2vec.embed.width}
+window_size = 1
+maxout_pieces = 3
+depth = 4
+"""
+
 DEFAULT_SPANCAT_MODEL = Config().from_str(spancat_default_config)["model"]
+DEFAULT_SPANCAT_SINGLELABEL_MODEL = Config().from_str(
+    spancat_singlelabel_default_config
+)["model"]
 
 
 @runtime_checkable
@@ -119,10 +149,14 @@ def make_spancat(
     threshold: float,
     max_positive: Optional[int],
 ) -> "SpanCategorizer":
-    """Create a SpanCategorizer component. The span categorizer consists of two
+    """Create a SpanCategorizer component and configure it for multi-label
+    classification to be able to assign multiple labels for each span.
+    The span categorizer consists of two
     parts: a suggester function that proposes candidate spans, and a labeller
     model that predicts one or more labels for each span.
 
+    name (str): The component instance name, used to add entries to the
+        losses during training.
     suggester (Callable[[Iterable[Doc], Optional[Ops]], Ragged]): A function that suggests spans.
         Spans are returned as a ragged array with two integer columns, for the
         start and end positions.
@@ -144,12 +178,80 @@ def make_spancat(
     """
     return SpanCategorizer(
         nlp.vocab,
-        suggester=suggester,
         model=model,
-        spans_key=spans_key,
-        threshold=threshold,
-        max_positive=max_positive,
+        suggester=suggester,
         name=name,
+        spans_key=spans_key,
+        negative_weight=None,
+        allow_overlap=True,
+        max_positive=max_positive,
+        threshold=threshold,
+        scorer=scorer,
+        add_negative_label=False,
+    )
+
+
+@Language.factory(
+    "spancat_singlelabel",
+    assigns=["doc.spans"],
+    default_config={
+        "spans_key": "sc",
+        "model": DEFAULT_SPANCAT_SINGLELABEL_MODEL,
+        "negative_weight": 1.0,
+        "suggester": {"@misc": "spacy.ngram_suggester.v1", "sizes": [1, 2, 3]},
+        "scorer": {"@scorers": "spacy.spancat_scorer.v1"},
+        "allow_overlap": True,
+    },
+    default_score_weights={"spans_sc_f": 1.0, "spans_sc_p": 0.0, "spans_sc_r": 0.0},
+)
+def make_spancat_singlelabel(
+    nlp: Language,
+    name: str,
+    suggester: Suggester,
+    model: Model[Tuple[List[Doc], Ragged], Floats2d],
+    spans_key: str,
+    negative_weight: float,
+    allow_overlap: bool,
+    scorer: Optional[Callable],
+) -> "SpanCategorizer":
+    """Create a SpanCategorizer component and configure it for multi-class
+    classification. With this configuration each span can get at most one
+    label. The span categorizer consists of two
+    parts: a suggester function that proposes candidate spans, and a labeller
+    model that predicts one or more labels for each span.
+
+    name (str): The component instance name, used to add entries to the
+        losses during training.
+    suggester (Callable[[Iterable[Doc], Optional[Ops]], Ragged]): A function that suggests spans.
+        Spans are returned as a ragged array with two integer columns, for the
+        start and end positions.
+    model (Model[Tuple[List[Doc], Ragged], Floats2d]): A model instance that
+        is given a list of documents and (start, end) indices representing
+        candidate span offsets. The model predicts a probability for each category
+        for each span.
+    spans_key (str): Key of the doc.spans dict to save the spans under. During
+        initialization and training, the component will look for spans on the
+        reference document under the same key.
+    scorer (Optional[Callable]): The scoring method. Defaults to
+        Scorer.score_spans for the Doc.spans[spans_key] with overlapping
+        spans allowed.
+    negative_weight (float): Multiplier for the loss terms.
+        Can be used to downweight the negative samples if there are too many.
+    allow_overlap (bool): If True the data is assumed to contain overlapping spans.
+        Otherwise it produces non-overlapping spans greedily prioritizing
+        higher assigned label scores.
+    """
+    return SpanCategorizer(
+        nlp.vocab,
+        model=model,
+        suggester=suggester,
+        name=name,
+        spans_key=spans_key,
+        negative_weight=negative_weight,
+        allow_overlap=allow_overlap,
+        max_positive=1,
+        add_negative_label=True,
+        threshold=None,
         scorer=scorer,
     )
 
@@ -172,6 +274,27 @@ def make_spancat_scorer():
     return spancat_score
 
 
+@dataclass
+class _Intervals:
+    """
+    Helper class to avoid storing overlapping spans.
+    """
+
+    def __init__(self):
+        self.ranges = set()
+
+    def add(self, i, j):
+        for e in range(i, j):
+            self.ranges.add(e)
+
+    def __contains__(self, rang):
+        i, j = rang
+        for e in range(i, j):
+            if e in self.ranges:
+                return True
+        return False
+
+
 class SpanCategorizer(TrainablePipe):
     """Pipeline component to label spans of text.
 
@@ -185,25 +308,43 @@ class SpanCategorizer(TrainablePipe):
         suggester: Suggester,
         name: str = "spancat",
         *,
+        add_negative_label: bool = False,
         spans_key: str = "spans",
-        threshold: float = 0.5,
+        negative_weight: Optional[float] = 1.0,
+        allow_overlap: Optional[bool] = True,
         max_positive: Optional[int] = None,
+        threshold: Optional[float] = 0.5,
         scorer: Optional[Callable] = spancat_score,
     ) -> None:
-        """Initialize the span categorizer.
+        """Initialize the multi-label or multi-class span categorizer.
+
         vocab (Vocab): The shared vocabulary.
         model (thinc.api.Model): The Thinc Model powering the pipeline component.
+            For multi-class classification (single label per span) we recommend
+            using a Softmax classifier as a the final layer, while for multi-label
+            classification (multiple possible labels per span) we recommend Logistic.
+        suggester (Callable[[Iterable[Doc], Optional[Ops]], Ragged]): A function that suggests spans.
+            Spans are returned as a ragged array with two integer columns, for the
+            start and end positions.
         name (str): The component instance name, used to add entries to the
             losses during training.
         spans_key (str): Key of the Doc.spans dict to save the spans under.
             During initialization and training, the component will look for
             spans on the reference document under the same key. Defaults to
             `"spans"`.
-        threshold (float): Minimum probability to consider a prediction
-            positive. Spans with a positive prediction will be saved on the Doc.
-            Defaults to 0.5.
+        add_negative_label (bool): Learn to predict a special 'negative_label'
+            when a Span is not annotated.
+        threshold (Optional[float]): Minimum probability to consider a prediction
+            positive. Defaults to 0.5. Spans with a positive prediction will be saved
+            on the Doc.
         max_positive (Optional[int]): Maximum number of labels to consider
             positive per span. Defaults to None, indicating no limit.
+        negative_weight (float): Multiplier for the loss terms.
+            Can be used to downweight the negative samples if there are too many
+            when add_negative_label is True. Otherwise its unused.
+        allow_overlap (bool): If True the data is assumed to contain overlapping spans.
+            Otherwise it produces non-overlapping spans greedily prioritizing
+            higher assigned label scores. Only used when max_positive is 1.
         scorer (Optional[Callable]): The scoring method. Defaults to
             Scorer.score_spans for the Doc.spans[spans_key] with overlapping
             spans allowed.
@@ -215,12 +356,17 @@ class SpanCategorizer(TrainablePipe):
             "spans_key": spans_key,
             "threshold": threshold,
             "max_positive": max_positive,
+            "negative_weight": negative_weight,
+            "allow_overlap": allow_overlap,
         }
         self.vocab = vocab
         self.suggester = suggester
         self.model = model
         self.name = name
         self.scorer = scorer
+        self.add_negative_label = add_negative_label
+        if not allow_overlap and max_positive is not None and max_positive > 1:
+            raise ValueError(Errors.E1051.format(max_positive=max_positive))
 
     @property
     def key(self) -> str:
@@ -230,6 +376,21 @@ class SpanCategorizer(TrainablePipe):
         """
         return str(self.cfg["spans_key"])
 
+    def _allow_extra_label(self) -> None:
+        """Raise an error if the component can not add any more labels."""
+        nO = None
+        if self.model.has_dim("nO"):
+            nO = self.model.get_dim("nO")
+        elif self.model.has_ref("output_layer") and self.model.get_ref(
+            "output_layer"
+        ).has_dim("nO"):
+            nO = self.model.get_ref("output_layer").get_dim("nO")
+        if nO is not None and nO == self._n_labels:
+            if not self.is_resizable:
+                raise ValueError(
+                    Errors.E922.format(name=self.name, nO=self.model.get_dim("nO"))
+                )
+
     def add_label(self, label: str) -> int:
         """Add a new label to the pipe.
 
@@ -263,6 +424,27 @@ class SpanCategorizer(TrainablePipe):
         """
         return list(self.labels)
 
+    @property
+    def _label_map(self) -> Dict[str, int]:
+        """RETURNS (Dict[str, int]): The label map."""
+        return {label: i for i, label in enumerate(self.labels)}
+
+    @property
+    def _n_labels(self) -> int:
+        """RETURNS (int): Number of labels."""
+        if self.add_negative_label:
+            return len(self.labels) + 1
+        else:
+            return len(self.labels)
+
+    @property
+    def _negative_label_i(self) -> Union[int, None]:
+        """RETURNS (Union[int, None]): Index of the negative label."""
+        if self.add_negative_label:
+            return len(self.label_data)
+        else:
+            return None
+
     def predict(self, docs: Iterable[Doc]):
         """Apply the pipeline's model to a batch of docs, without modifying them.
 
@@ -304,14 +486,24 @@ class SpanCategorizer(TrainablePipe):
 
         DOCS: https://spacy.io/api/spancategorizer#set_annotations
         """
-        labels = self.labels
         indices, scores = indices_scores
         offset = 0
         for i, doc in enumerate(docs):
             indices_i = indices[i].dataXd
-            doc.spans[self.key] = self._make_span_group(
-                doc, indices_i, scores[offset : offset + indices.lengths[i]], labels  # type: ignore[arg-type]
-            )
+            allow_overlap = cast(bool, self.cfg["allow_overlap"])
+            if self.cfg["max_positive"] == 1:
+                doc.spans[self.key] = self._make_span_group_singlelabel(
+                    doc,
+                    indices_i,
+                    scores[offset : offset + indices.lengths[i]],
+                    allow_overlap,
+                )
+            else:
+                doc.spans[self.key] = self._make_span_group_multilabel(
+                    doc,
+                    indices_i,
+                    scores[offset : offset + indices.lengths[i]],
+                )
             offset += indices.lengths[i]
 
     def update(
@@ -371,9 +563,11 @@ class SpanCategorizer(TrainablePipe):
         spans = Ragged(
             self.model.ops.to_numpy(spans.data), self.model.ops.to_numpy(spans.lengths)
         )
-        label_map = {label: i for i, label in enumerate(self.labels)}
         target = numpy.zeros(scores.shape, dtype=scores.dtype)
+        if self.add_negative_label:
+            negative_spans = numpy.ones((scores.shape[0]))
         offset = 0
+        label_map = self._label_map
         for i, eg in enumerate(examples):
             # Map (start, end) offset of spans to the row in the d_scores array,
             # so that we can adjust the gradient for predictions that were
@@ -390,10 +584,16 @@ class SpanCategorizer(TrainablePipe):
                     row = spans_index[key]
                     k = label_map[gold_span.label_]
                     target[row, k] = 1.0
+                    if self.add_negative_label:
+                        # delete negative label target.
+                        negative_spans[row] = 0.0
             # The target is a flat array for all docs. Track the position
             # we're at within the flat array.
             offset += spans.lengths[i]
         target = self.model.ops.asarray(target, dtype="f")  # type: ignore
+        if self.add_negative_label:
+            negative_samples = numpy.nonzero(negative_spans)[0]
+            target[negative_samples, self._negative_label_i] = 1.0  # type: ignore
         # The target will have the values 0 (for untrue predictions) or 1
         # (for true predictions).
         # The scores should be in the range [0, 1].
@@ -402,6 +602,10 @@ class SpanCategorizer(TrainablePipe):
         # If the prediction is 0.9 and it's false, the gradient will be
         # 0.9 (0.9 - 0.0)
         d_scores = scores - target
+        if self.add_negative_label:
+            neg_weight = cast(float, self.cfg["negative_weight"])
+            if neg_weight != 1.0:
+                d_scores[negative_samples] *= neg_weight
         loss = float((d_scores**2).sum())
         return loss, d_scores
 
@@ -438,7 +642,7 @@ class SpanCategorizer(TrainablePipe):
         if subbatch:
             docs = [eg.x for eg in subbatch]
             spans = build_ngram_suggester(sizes=[1])(docs)
-            Y = self.model.ops.alloc2f(spans.dataXd.shape[0], len(self.labels))
+            Y = self.model.ops.alloc2f(spans.dataXd.shape[0], self._n_labels)
             self.model.initialize(X=(docs, spans), Y=Y)
         else:
             self.model.initialize()
@@ -452,31 +656,96 @@ class SpanCategorizer(TrainablePipe):
             eg.reference.spans.get(self.key, []), allow_overlap=True
         )
 
-    def _make_span_group(
-        self, doc: Doc, indices: Ints2d, scores: Floats2d, labels: List[str]
+    def _make_span_group_multilabel(
+        self,
+        doc: Doc,
+        indices: Ints2d,
+        scores: Floats2d,
     ) -> SpanGroup:
+        """Find the top-k labels for each span (k=max_positive)."""
         spans = SpanGroup(doc, name=self.key)
-        max_positive = self.cfg["max_positive"]
+        if scores.size == 0:
+            return spans
+        scores = self.model.ops.to_numpy(scores)
+        indices = self.model.ops.to_numpy(indices)
         threshold = self.cfg["threshold"]
+        max_positive = self.cfg["max_positive"]
 
         keeps = scores >= threshold
-        ranked = (scores * -1).argsort()  # type: ignore
         if max_positive is not None:
             assert isinstance(max_positive, int)
+            if self.add_negative_label:
+                negative_scores = numpy.copy(scores[:, self._negative_label_i])
+                scores[:, self._negative_label_i] = -numpy.inf
+                ranked = (scores * -1).argsort()  # type: ignore
+                scores[:, self._negative_label_i] = negative_scores
+            else:
+                ranked = (scores * -1).argsort()  # type: ignore
             span_filter = ranked[:, max_positive:]
             for i, row in enumerate(span_filter):
                 keeps[i, row] = False
-        spans.attrs["scores"] = scores[keeps].flatten()
-
-        indices = self.model.ops.to_numpy(indices)
-        keeps = self.model.ops.to_numpy(keeps)
 
+        attrs_scores = []
         for i in range(indices.shape[0]):
             start = indices[i, 0]
             end = indices[i, 1]
-
             for j, keep in enumerate(keeps[i]):
                 if keep:
-                    spans.append(Span(doc, start, end, label=labels[j]))
+                    if j != self._negative_label_i:
+                        spans.append(Span(doc, start, end, label=self.labels[j]))
+                        attrs_scores.append(scores[i, j])
+        spans.attrs["scores"] = numpy.array(attrs_scores)
+        return spans
+
+    def _make_span_group_singlelabel(
+        self,
+        doc: Doc,
+        indices: Ints2d,
+        scores: Floats2d,
+        allow_overlap: bool = True,
+    ) -> SpanGroup:
+        """Find the argmax label for each span."""
+        # Handle cases when there are zero suggestions
+        if scores.size == 0:
+            return SpanGroup(doc, name=self.key)
+        scores = self.model.ops.to_numpy(scores)
+        indices = self.model.ops.to_numpy(indices)
+        predicted = scores.argmax(axis=1)
+        argmax_scores = numpy.take_along_axis(
+            scores, numpy.expand_dims(predicted, 1), axis=1
+        )
+        keeps = numpy.ones(predicted.shape, dtype=bool)
+        # Remove samples where the negative label is the argmax.
+        if self.add_negative_label:
+            keeps = numpy.logical_and(keeps, predicted != self._negative_label_i)
+        # Filter samples according to threshold.
+        threshold = self.cfg["threshold"]
+        if threshold is not None:
+            keeps = numpy.logical_and(keeps, (argmax_scores >= threshold).squeeze())
+        # Sort spans according to argmax probability
+        if not allow_overlap:
+            # Get the probabilities
+            sort_idx = (argmax_scores.squeeze() * -1).argsort()
+            predicted = predicted[sort_idx]
+            indices = indices[sort_idx]
+            keeps = keeps[sort_idx]
+        seen = _Intervals()
+        spans = SpanGroup(doc, name=self.key)
+        attrs_scores = []
+        for i in range(indices.shape[0]):
+            if not keeps[i]:
+                continue
+
+            label = predicted[i]
+            start = indices[i, 0]
+            end = indices[i, 1]
+
+            if not allow_overlap:
+                if (start, end) in seen:
+                    continue
+                else:
+                    seen.add(start, end)
+            attrs_scores.append(argmax_scores[i])
+            spans.append(Span(doc, start, end, label=self.labels[label]))
 
         return spans

spacy/tests/matcher/test_dependency_matcher.py

@@ -316,16 +316,32 @@ def test_dependency_matcher_precedence_ops(en_vocab, op, num_matches):
         ("the", "brown", "$--", 0),
         ("brown", "the", "$--", 1),
         ("brown", "brown", "$--", 0),
+        ("over", "jumped", "<+", 0),
+        ("quick", "fox", "<+", 0),
+        ("the", "quick", "<+", 0),
+        ("brown", "fox", "<+", 1),
         ("quick", "fox", "<++", 1),
         ("quick", "over", "<++", 0),
         ("over", "jumped", "<++", 0),
         ("the", "fox", "<++", 2),
+        ("brown", "fox", "<-", 0),
+        ("fox", "over", "<-", 0),
+        ("the", "over", "<-", 0),
+        ("over", "jumped", "<-", 1),
         ("brown", "fox", "<--", 0),
         ("fox", "jumped", "<--", 0),
         ("fox", "over", "<--", 1),
+        ("fox", "brown", ">+", 0),
+        ("over", "fox", ">+", 0),
+        ("over", "the", ">+", 0),
+        ("jumped", "over", ">+", 1),
         ("jumped", "over", ">++", 1),
         ("fox", "lazy", ">++", 0),
         ("over", "the", ">++", 0),
+        ("jumped", "over", ">-", 0),
+        ("fox", "quick", ">-", 0),
+        ("brown", "quick", ">-", 0),
+        ("fox", "brown", ">-", 1),
         ("brown", "fox", ">--", 0),
         ("fox", "brown", ">--", 1),
         ("jumped", "fox", ">--", 1),

spacy/tests/parser/test_ner.py

@@ -9,6 +9,8 @@ from spacy.lang.en import English
 from spacy.lang.it import Italian
 from spacy.language import Language
 from spacy.lookups import Lookups
+from spacy.pipeline import EntityRecognizer
+from spacy.pipeline.ner import DEFAULT_NER_MODEL
 from spacy.pipeline._parser_internals.ner import BiluoPushDown
 from spacy.training import Example, iob_to_biluo, split_bilu_label
 from spacy.tokens import Doc, Span
@@ -16,8 +18,6 @@ from spacy.vocab import Vocab
 import logging
 
 from ..util import make_tempdir
-from ...pipeline import EntityRecognizer
-from ...pipeline.ner import DEFAULT_NER_MODEL
 
 TRAIN_DATA = [
     ("Who is Shaka Khan?", {"entities": [(7, 17, "PERSON")]}),

spacy/tests/parser/test_parse.py

@@ -8,11 +8,11 @@ from spacy.lang.en import English
 from spacy.tokens import Doc
 from spacy.training import Example
 from spacy.vocab import Vocab
+from spacy.pipeline import DependencyParser
+from spacy.pipeline.dep_parser import DEFAULT_PARSER_MODEL
+from spacy.pipeline.tok2vec import DEFAULT_TOK2VEC_MODEL
 
-from ...pipeline import DependencyParser
-from ...pipeline.dep_parser import DEFAULT_PARSER_MODEL
 from ..util import apply_transition_sequence, make_tempdir
-from ...pipeline.tok2vec import DEFAULT_TOK2VEC_MODEL
 
 TRAIN_DATA = [
     (

spacy/tests/pipeline/test_entity_linker.py

@@ -353,6 +353,9 @@ def test_kb_default(nlp):
     """Test that the default (empty) KB is loaded upon construction"""
     entity_linker = nlp.add_pipe("entity_linker", config={})
     assert len(entity_linker.kb) == 0
+    with pytest.raises(ValueError, match="E139"):
+        # this raises an error because the KB is empty
+        entity_linker.validate_kb()
     assert entity_linker.kb.get_size_entities() == 0
     assert entity_linker.kb.get_size_aliases() == 0
     # 64 is the default value from pipeline.entity_linker

spacy/tests/pipeline/test_spancat.py

@@ -15,6 +15,8 @@ OPS = get_current_ops()
 
 SPAN_KEY = "labeled_spans"
 
+SPANCAT_COMPONENTS = ["spancat", "spancat_singlelabel"]
+
 TRAIN_DATA = [
     ("Who is Shaka Khan?", {"spans": {SPAN_KEY: [(7, 17, "PERSON")]}}),
     (
@@ -41,38 +43,42 @@ def make_examples(nlp, data=TRAIN_DATA):
     return train_examples
 
 
-def test_no_label():
+@pytest.mark.parametrize("name", SPANCAT_COMPONENTS)
+def test_no_label(name):
     nlp = Language()
-    nlp.add_pipe("spancat", config={"spans_key": SPAN_KEY})
+    nlp.add_pipe(name, config={"spans_key": SPAN_KEY})
     with pytest.raises(ValueError):
         nlp.initialize()
 
 
-def test_no_resize():
+@pytest.mark.parametrize("name", SPANCAT_COMPONENTS)
+def test_no_resize(name):
     nlp = Language()
-    spancat = nlp.add_pipe("spancat", config={"spans_key": SPAN_KEY})
+    spancat = nlp.add_pipe(name, config={"spans_key": SPAN_KEY})
     spancat.add_label("Thing")
     spancat.add_label("Phrase")
     assert spancat.labels == ("Thing", "Phrase")
     nlp.initialize()
-    assert spancat.model.get_dim("nO") == 2
+    assert spancat.model.get_dim("nO") == spancat._n_labels
     # this throws an error because the spancat can't be resized after initialization
     with pytest.raises(ValueError):
         spancat.add_label("Stuff")
 
 
-def test_implicit_labels():
+@pytest.mark.parametrize("name", SPANCAT_COMPONENTS)
+def test_implicit_labels(name):
     nlp = Language()
-    spancat = nlp.add_pipe("spancat", config={"spans_key": SPAN_KEY})
+    spancat = nlp.add_pipe(name, config={"spans_key": SPAN_KEY})
     assert len(spancat.labels) == 0
     train_examples = make_examples(nlp)
     nlp.initialize(get_examples=lambda: train_examples)
     assert spancat.labels == ("PERSON", "LOC")
 
 
-def test_explicit_labels():
+@pytest.mark.parametrize("name", SPANCAT_COMPONENTS)
+def test_explicit_labels(name):
     nlp = Language()
-    spancat = nlp.add_pipe("spancat", config={"spans_key": SPAN_KEY})
+    spancat = nlp.add_pipe(name, config={"spans_key": SPAN_KEY})
     assert len(spancat.labels) == 0
     spancat.add_label("PERSON")
     spancat.add_label("LOC")
@@ -102,13 +108,13 @@ def test_doc_gc():
             # XXX This fails with length 0 sometimes
             assert len(spangroup) > 0
             with pytest.raises(RuntimeError):
-                span = spangroup[0]
+                spangroup[0]
 
 
 @pytest.mark.parametrize(
     "max_positive,nr_results", [(None, 4), (1, 2), (2, 3), (3, 4), (4, 4)]
 )
-def test_make_spangroup(max_positive, nr_results):
+def test_make_spangroup_multilabel(max_positive, nr_results):
     fix_random_seed(0)
     nlp = Language()
     spancat = nlp.add_pipe(
@@ -120,10 +126,12 @@ def test_make_spangroup(max_positive, nr_results):
     indices = ngram_suggester([doc])[0].dataXd
     assert_array_equal(OPS.to_numpy(indices), numpy.asarray([[0, 1], [1, 2], [0, 2]]))
     labels = ["Thing", "City", "Person", "GreatCity"]
+    for label in labels:
+        spancat.add_label(label)
     scores = numpy.asarray(
         [[0.2, 0.4, 0.3, 0.1], [0.1, 0.6, 0.2, 0.4], [0.8, 0.7, 0.3, 0.9]], dtype="f"
     )
-    spangroup = spancat._make_span_group(doc, indices, scores, labels)
+    spangroup = spancat._make_span_group_multilabel(doc, indices, scores)
     assert len(spangroup) == nr_results
 
     # first span is always the second token "London"
@@ -154,6 +162,118 @@ def test_make_spangroup(max_positive, nr_results):
     assert_almost_equal(0.9, spangroup.attrs["scores"][-1], 5)
 
 
+@pytest.mark.parametrize(
+    "threshold,allow_overlap,nr_results",
+    [(0.05, True, 3), (0.05, False, 1), (0.5, True, 2), (0.5, False, 1)],
+)
+def test_make_spangroup_singlelabel(threshold, allow_overlap, nr_results):
+    fix_random_seed(0)
+    nlp = Language()
+    spancat = nlp.add_pipe(
+        "spancat",
+        config={
+            "spans_key": SPAN_KEY,
+            "threshold": threshold,
+            "max_positive": 1,
+        },
+    )
+    doc = nlp.make_doc("Greater London")
+    ngram_suggester = registry.misc.get("spacy.ngram_suggester.v1")(sizes=[1, 2])
+    indices = ngram_suggester([doc])[0].dataXd
+    assert_array_equal(OPS.to_numpy(indices), numpy.asarray([[0, 1], [1, 2], [0, 2]]))
+    labels = ["Thing", "City", "Person", "GreatCity"]
+    for label in labels:
+        spancat.add_label(label)
+    scores = numpy.asarray(
+        [[0.2, 0.4, 0.3, 0.1], [0.1, 0.6, 0.2, 0.4], [0.8, 0.7, 0.3, 0.9]], dtype="f"
+    )
+    spangroup = spancat._make_span_group_singlelabel(
+        doc, indices, scores, allow_overlap
+    )
+    assert len(spangroup) == nr_results
+    if threshold > 0.4:
+        if allow_overlap:
+            assert spangroup[0].text == "London"
+            assert spangroup[0].label_ == "City"
+            assert spangroup[1].text == "Greater London"
+            assert spangroup[1].label_ == "GreatCity"
+
+        else:
+            assert spangroup[0].text == "Greater London"
+            assert spangroup[0].label_ == "GreatCity"
+    else:
+        if allow_overlap:
+            assert spangroup[0].text == "Greater"
+            assert spangroup[0].label_ == "City"
+            assert spangroup[1].text == "London"
+            assert spangroup[1].label_ == "City"
+            assert spangroup[2].text == "Greater London"
+            assert spangroup[2].label_ == "GreatCity"
+        else:
+            assert spangroup[0].text == "Greater London"
+
+
+def test_make_spangroup_negative_label():
+    fix_random_seed(0)
+    nlp_single = Language()
+    nlp_multi = Language()
+    spancat_single = nlp_single.add_pipe(
+        "spancat",
+        config={
+            "spans_key": SPAN_KEY,
+            "threshold": 0.1,
+            "max_positive": 1,
+        },
+    )
+    spancat_multi = nlp_multi.add_pipe(
+        "spancat",
+        config={
+            "spans_key": SPAN_KEY,
+            "threshold": 0.1,
+            "max_positive": 2,
+        },
+    )
+    spancat_single.add_negative_label = True
+    spancat_multi.add_negative_label = True
+    doc = nlp_single.make_doc("Greater London")
+    labels = ["Thing", "City", "Person", "GreatCity"]
+    for label in labels:
+        spancat_multi.add_label(label)
+        spancat_single.add_label(label)
+    ngram_suggester = registry.misc.get("spacy.ngram_suggester.v1")(sizes=[1, 2])
+    indices = ngram_suggester([doc])[0].dataXd
+    assert_array_equal(OPS.to_numpy(indices), numpy.asarray([[0, 1], [1, 2], [0, 2]]))
+    scores = numpy.asarray(
+        [
+            [0.2, 0.4, 0.3, 0.1, 0.1],
+            [0.1, 0.6, 0.2, 0.4, 0.9],
+            [0.8, 0.7, 0.3, 0.9, 0.1],
+        ],
+        dtype="f",
+    )
+    spangroup_multi = spancat_multi._make_span_group_multilabel(doc, indices, scores)
+    spangroup_single = spancat_single._make_span_group_singlelabel(doc, indices, scores)
+    assert len(spangroup_single) == 2
+    assert spangroup_single[0].text == "Greater"
+    assert spangroup_single[0].label_ == "City"
+    assert spangroup_single[1].text == "Greater London"
+    assert spangroup_single[1].label_ == "GreatCity"
+
+    assert len(spangroup_multi) == 6
+    assert spangroup_multi[0].text == "Greater"
+    assert spangroup_multi[0].label_ == "City"
+    assert spangroup_multi[1].text == "Greater"
+    assert spangroup_multi[1].label_ == "Person"
+    assert spangroup_multi[2].text == "London"
+    assert spangroup_multi[2].label_ == "City"
+    assert spangroup_multi[3].text == "London"
+    assert spangroup_multi[3].label_ == "GreatCity"
+    assert spangroup_multi[4].text == "Greater London"
+    assert spangroup_multi[4].label_ == "Thing"
+    assert spangroup_multi[5].text == "Greater London"
+    assert spangroup_multi[5].label_ == "GreatCity"
+
+
 def test_ngram_suggester(en_tokenizer):
     # test different n-gram lengths
     for size in [1, 2, 3]:
@@ -371,9 +491,9 @@ def test_overfitting_IO_overlapping():
         assert set([span.label_ for span in spans2]) == {"LOC", "DOUBLE_LOC"}
 
 
-def test_zero_suggestions():
+@pytest.mark.parametrize("name", SPANCAT_COMPONENTS)
+def test_zero_suggestions(name):
     # Test with a suggester that can return 0 suggestions
-
     @registry.misc("test_mixed_zero_suggester")
     def make_mixed_zero_suggester():
         def mixed_zero_suggester(docs, *, ops=None):
@@ -400,7 +520,7 @@ def test_zero_suggestions():
     fix_random_seed(0)
     nlp = English()
     spancat = nlp.add_pipe(
-        "spancat",
+        name,
         config={
             "suggester": {"@misc": "test_mixed_zero_suggester"},
             "spans_key": SPAN_KEY,
@@ -408,7 +528,7 @@ def test_zero_suggestions():
     )
     train_examples = make_examples(nlp)
     optimizer = nlp.initialize(get_examples=lambda: train_examples)
-    assert spancat.model.get_dim("nO") == 2
+    assert spancat.model.get_dim("nO") == spancat._n_labels
     assert set(spancat.labels) == {"LOC", "PERSON"}
 
     nlp.update(train_examples, sgd=optimizer)
@@ -424,9 +544,10 @@ def test_zero_suggestions():
     list(nlp.pipe(["", "one", "three three three"]))
 
 
-def test_set_candidates():
+@pytest.mark.parametrize("name", SPANCAT_COMPONENTS)
+def test_set_candidates(name):
     nlp = Language()
-    spancat = nlp.add_pipe("spancat", config={"spans_key": SPAN_KEY})
+    spancat = nlp.add_pipe(name, config={"spans_key": SPAN_KEY})
     train_examples = make_examples(nlp)
     nlp.initialize(get_examples=lambda: train_examples)
     texts = [

spacy/tests/serialize/test_serialize_kb.py

@@ -1,7 +1,10 @@
-from typing import Callable
+from pathlib import Path
+from typing import Callable, Iterable, Any, Dict
 
-from spacy import util
-from spacy.util import ensure_path, registry, load_model_from_config
+import srsly
+
+from spacy import util, Errors
+from spacy.util import ensure_path, registry, load_model_from_config, SimpleFrozenList
 from spacy.kb.kb_in_memory import InMemoryLookupKB
 from spacy.vocab import Vocab
 from thinc.api import Config
@@ -91,7 +94,10 @@ def test_serialize_subclassed_kb():
 
     [components.entity_linker]
     factory = "entity_linker"
-
+    
+    [components.entity_linker.generate_empty_kb]
+    @misc = "kb_test.CustomEmptyKB.v1"
+    
     [initialize]
 
     [initialize.components]
@@ -99,7 +105,7 @@ def test_serialize_subclassed_kb():
     [initialize.components.entity_linker]
 
     [initialize.components.entity_linker.kb_loader]
-    @misc = "spacy.CustomKB.v1"
+    @misc = "kb_test.CustomKB.v1"
     entity_vector_length = 342
     custom_field = 666
     """
@@ -109,10 +115,57 @@ def test_serialize_subclassed_kb():
             super().__init__(vocab, entity_vector_length)
             self.custom_field = custom_field
 
-    @registry.misc("spacy.CustomKB.v1")
+        def to_disk(self, path, exclude: Iterable[str] = SimpleFrozenList()):
+            """We overwrite InMemoryLookupKB.to_disk() to ensure that self.custom_field is stored as well."""
+            path = ensure_path(path)
+            if not path.exists():
+                path.mkdir(parents=True)
+            if not path.is_dir():
+                raise ValueError(Errors.E928.format(loc=path))
+
+            def serialize_custom_fields(file_path: Path) -> None:
+                srsly.write_json(file_path, {"custom_field": self.custom_field})
+
+            serialize = {
+                "contents": lambda p: self.write_contents(p),
+                "strings.json": lambda p: self.vocab.strings.to_disk(p),
+                "custom_fields": lambda p: serialize_custom_fields(p),
+            }
+            util.to_disk(path, serialize, exclude)
+
+        def from_disk(self, path, exclude: Iterable[str] = SimpleFrozenList()):
+            """We overwrite InMemoryLookupKB.from_disk() to ensure that self.custom_field is loaded as well."""
+            path = ensure_path(path)
+            if not path.exists():
+                raise ValueError(Errors.E929.format(loc=path))
+            if not path.is_dir():
+                raise ValueError(Errors.E928.format(loc=path))
+
+            def deserialize_custom_fields(file_path: Path) -> None:
+                self.custom_field = srsly.read_json(file_path)["custom_field"]
+
+            deserialize: Dict[str, Callable[[Any], Any]] = {
+                "contents": lambda p: self.read_contents(p),
+                "strings.json": lambda p: self.vocab.strings.from_disk(p),
+                "custom_fields": lambda p: deserialize_custom_fields(p),
+            }
+            util.from_disk(path, deserialize, exclude)
+
+    @registry.misc("kb_test.CustomEmptyKB.v1")
+    def empty_custom_kb() -> Callable[[Vocab, int], SubInMemoryLookupKB]:
+        def empty_kb_factory(vocab: Vocab, entity_vector_length: int):
+            return SubInMemoryLookupKB(
+                vocab=vocab,
+                entity_vector_length=entity_vector_length,
+                custom_field=0,
+            )
+
+        return empty_kb_factory
+
+    @registry.misc("kb_test.CustomKB.v1")
     def custom_kb(
         entity_vector_length: int, custom_field: int
-    ) -> Callable[[Vocab], InMemoryLookupKB]:
+    ) -> Callable[[Vocab], SubInMemoryLookupKB]:
         def custom_kb_factory(vocab):
             kb = SubInMemoryLookupKB(
                 vocab=vocab,
@@ -139,6 +192,6 @@ def test_serialize_subclassed_kb():
         nlp2 = util.load_model_from_path(tmp_dir)
         entity_linker2 = nlp2.get_pipe("entity_linker")
         # After IO, the KB is the standard one
-        assert type(entity_linker2.kb) == InMemoryLookupKB
+        assert type(entity_linker2.kb) == SubInMemoryLookupKB
         assert entity_linker2.kb.entity_vector_length == 342
-        assert not hasattr(entity_linker2.kb, "custom_field")
+        assert entity_linker2.kb.custom_field == 666

spacy/tests/test_cli.py

@@ -2,7 +2,6 @@ import os
 import math
 from collections import Counter
 from typing import Tuple, List, Dict, Any
-import pkg_resources
 import time
 from pathlib import Path
 
@@ -29,6 +28,7 @@ from spacy.cli.debug_data import _print_span_characteristics
 from spacy.cli.debug_data import _get_spans_length_freq_dist
 from spacy.cli.download import get_compatibility, get_version
 from spacy.cli.init_config import RECOMMENDATIONS, init_config, fill_config
+from spacy.cli.init_pipeline import _init_labels
 from spacy.cli.package import get_third_party_dependencies
 from spacy.cli.package import _is_permitted_package_name
 from spacy.cli.project.remote_storage import RemoteStorage
@@ -47,7 +47,6 @@ from spacy.training.converters import conll_ner_to_docs, conllu_to_docs
 from spacy.training.converters import iob_to_docs
 from spacy.util import ENV_VARS, get_minor_version, load_model_from_config, load_config
 
-from ..cli.init_pipeline import _init_labels
 from .util import make_tempdir
 
 
@@ -553,7 +552,14 @@ def test_parse_cli_overrides():
 
 @pytest.mark.parametrize("lang", ["en", "nl"])
 @pytest.mark.parametrize(
-    "pipeline", [["tagger", "parser", "ner"], [], ["ner", "textcat", "sentencizer"]]
+    "pipeline",
+    [
+        ["tagger", "parser", "ner"],
+        [],
+        ["ner", "textcat", "sentencizer"],
+        ["morphologizer", "spancat", "entity_linker"],
+        ["spancat_singlelabel", "textcat_multilabel"],
+    ],
 )
 @pytest.mark.parametrize("optimize", ["efficiency", "accuracy"])
 @pytest.mark.parametrize("pretraining", [True, False])
@@ -1126,6 +1132,7 @@ def test_cli_find_threshold(capsys):
                 )
 
 
+@pytest.mark.filterwarnings("ignore::DeprecationWarning")
 @pytest.mark.parametrize(
     "reqs,output",
     [
@@ -1158,6 +1165,8 @@ def test_cli_find_threshold(capsys):
     ],
 )
 def test_project_check_requirements(reqs, output):
+    import pkg_resources
+
     # excessive guard against unlikely package name
     try:
         pkg_resources.require("spacyunknowndoesnotexist12345")

spacy/tests/training/test_pretraining.py

@@ -2,17 +2,19 @@ from pathlib import Path
 import numpy as np
 import pytest
 import srsly
-from spacy.vocab import Vocab
-from thinc.api import Config
+from thinc.api import Config, get_current_ops
 
+from spacy import util
+from spacy.lang.en import English
+from spacy.training.initialize import init_nlp
+from spacy.training.loop import train
+from spacy.training.pretrain import pretrain
+from spacy.tokens import Doc, DocBin
+from spacy.language import DEFAULT_CONFIG_PRETRAIN_PATH, DEFAULT_CONFIG_PATH
+from spacy.ml.models.multi_task import create_pretrain_vectors
+from spacy.vectors import Vectors
+from spacy.vocab import Vocab
 from ..util import make_tempdir
-from ... import util
-from ...lang.en import English
-from ...training.initialize import init_nlp
-from ...training.loop import train
-from ...training.pretrain import pretrain
-from ...tokens import Doc, DocBin
-from ...language import DEFAULT_CONFIG_PRETRAIN_PATH, DEFAULT_CONFIG_PATH
 
 pretrain_string_listener = """
 [nlp]
@@ -346,3 +348,30 @@ def write_vectors_model(tmp_dir):
     nlp = English(vocab)
     nlp.to_disk(nlp_path)
     return str(nlp_path)
+
+
+def test_pretrain_default_vectors():
+    nlp = English()
+    nlp.add_pipe("tok2vec")
+    nlp.initialize()
+
+    # default vectors are supported
+    nlp.vocab.vectors = Vectors(shape=(10, 10))
+    create_pretrain_vectors(1, 1, "cosine")(nlp.vocab, nlp.get_pipe("tok2vec").model)
+
+    # error for no vectors
+    with pytest.raises(ValueError, match="E875"):
+        nlp.vocab.vectors = Vectors()
+        create_pretrain_vectors(1, 1, "cosine")(
+            nlp.vocab, nlp.get_pipe("tok2vec").model
+        )
+
+    # error for floret vectors
+    with pytest.raises(ValueError, match="E850"):
+        ops = get_current_ops()
+        nlp.vocab.vectors = Vectors(
+            data=ops.xp.zeros((10, 10)), mode="floret", hash_count=1
+        )
+        create_pretrain_vectors(1, 1, "cosine")(
+            nlp.vocab, nlp.get_pipe("tok2vec").model
+        )

website/docs/api/architectures.mdx

@@ -899,15 +899,21 @@ The `EntityLinker` model architecture is a Thinc `Model` with a
 | `nO`        | Output dimension, determined by the length of the vectors encoding each entity in the KB. If the `nO` dimension is not set, the entity linking component will set it when `initialize` is called. ~~Optional[int]~~ |
 | **CREATES** | The model using the architecture. ~~Model[List[Doc], Floats2d]~~                                                                                                                                                    |
 
-### spacy.EmptyKB.v1 {id="EmptyKB"}
+### spacy.EmptyKB.v1 {id="EmptyKB.v1"}
 
 A function that creates an empty `KnowledgeBase` from a [`Vocab`](/api/vocab)
-instance. This is the default when a new entity linker component is created.
+instance.
 
 | Name                   | Description                                                                         |
 | ---------------------- | ----------------------------------------------------------------------------------- |
 | `entity_vector_length` | The length of the vectors encoding each entity in the KB. Defaults to `64`. ~~int~~ |
 
+### spacy.EmptyKB.v2 {id="EmptyKB"}
+
+A function that creates an empty `KnowledgeBase` from a [`Vocab`](/api/vocab)
+instance. This is the default when a new entity linker component is created. It
+returns a `Callable[[Vocab, int], InMemoryLookupKB]`.
+
 ### spacy.KBFromFile.v1 {id="KBFromFile"}
 
 A function that reads an existing `KnowledgeBase` from file.
@@ -924,6 +930,15 @@ plausible [`Candidate`](/api/kb/#candidate) objects. The default
 `CandidateGenerator` uses the text of a mention to find its potential aliases in
 the `KnowledgeBase`. Note that this function is case-dependent.
 
+### spacy.CandidateBatchGenerator.v1 {id="CandidateBatchGenerator"}
+
+A function that takes as input a [`KnowledgeBase`](/api/kb) and an `Iterable` of
+[`Span`](/api/span) objects denoting named entities, and returns a list of
+plausible [`Candidate`](/api/kb/#candidate) objects per specified
+[`Span`](/api/span). The default `CandidateBatchGenerator` uses the text of a
+mention to find its potential aliases in the `KnowledgeBase`. Note that this
+function is case-dependent.
+
 ## Coreference {id="coref-architectures",tag="experimental"}
 
 A [`CoreferenceResolver`](/api/coref) component identifies tokens that refer to

website/docs/api/dependencymatcher.mdx

@@ -68,24 +68,28 @@ The following operators are supported by the `DependencyMatcher`, most of which
 come directly from
 [Semgrex](https://nlp.stanford.edu/nlp/javadoc/javanlp/edu/stanford/nlp/semgraph/semgrex/SemgrexPattern.html):
 
-| Symbol    | Description                                                                                                          |
-| --------- | -------------------------------------------------------------------------------------------------------------------- |
-| `A < B`   | `A` is the immediate dependent of `B`.                                                                               |
-| `A > B`   | `A` is the immediate head of `B`.                                                                                    |
-| `A << B`  | `A` is the dependent in a chain to `B` following dep &rarr; head paths.                                              |
-| `A >> B`  | `A` is the head in a chain to `B` following head &rarr; dep paths.                                                   |
-| `A . B`   | `A` immediately precedes `B`, i.e. `A.i == B.i - 1`, and both are within the same dependency tree.                   |
-| `A .* B`  | `A` precedes `B`, i.e. `A.i < B.i`, and both are within the same dependency tree _(not in Semgrex)_.                 |
-| `A ; B`   | `A` immediately follows `B`, i.e. `A.i == B.i + 1`, and both are within the same dependency tree _(not in Semgrex)_. |
-| `A ;* B`  | `A` follows `B`, i.e. `A.i > B.i`, and both are within the same dependency tree _(not in Semgrex)_.                  |
-| `A $+ B`  | `B` is a right immediate sibling of `A`, i.e. `A` and `B` have the same parent and `A.i == B.i - 1`.                 |
-| `A $- B`  | `B` is a left immediate sibling of `A`, i.e. `A` and `B` have the same parent and `A.i == B.i + 1`.                  |
-| `A $++ B` | `B` is a right sibling of `A`, i.e. `A` and `B` have the same parent and `A.i < B.i`.                                |
-| `A $-- B` | `B` is a left sibling of `A`, i.e. `A` and `B` have the same parent and `A.i > B.i`.                                 |
-| `A >++ B` | `B` is a right child of `A`, i.e. `A` is a parent of `B` and `A.i < B.i` _(not in Semgrex)_.                         |
-| `A >-- B` | `B` is a left child of `A`, i.e. `A` is a parent of `B` and `A.i > B.i` _(not in Semgrex)_.                          |
-| `A <++ B` | `B` is a right parent of `A`, i.e. `A` is a child of `B` and `A.i < B.i` _(not in Semgrex)_.                         |
-| `A <-- B` | `B` is a left parent of `A`, i.e. `A` is a child of `B` and `A.i > B.i` _(not in Semgrex)_.                          |
+| Symbol                                  | Description                                                                                                          |
+| --------------------------------------- | -------------------------------------------------------------------------------------------------------------------- |
+| `A < B`                                 | `A` is the immediate dependent of `B`.                                                                               |
+| `A > B`                                 | `A` is the immediate head of `B`.                                                                                    |
+| `A << B`                                | `A` is the dependent in a chain to `B` following dep &rarr; head paths.                                              |
+| `A >> B`                                | `A` is the head in a chain to `B` following head &rarr; dep paths.                                                   |
+| `A . B`                                 | `A` immediately precedes `B`, i.e. `A.i == B.i - 1`, and both are within the same dependency tree.                   |
+| `A .* B`                                | `A` precedes `B`, i.e. `A.i < B.i`, and both are within the same dependency tree _(not in Semgrex)_.                 |
+| `A ; B`                                 | `A` immediately follows `B`, i.e. `A.i == B.i + 1`, and both are within the same dependency tree _(not in Semgrex)_. |
+| `A ;* B`                                | `A` follows `B`, i.e. `A.i > B.i`, and both are within the same dependency tree _(not in Semgrex)_.                  |
+| `A $+ B`                                | `B` is a right immediate sibling of `A`, i.e. `A` and `B` have the same parent and `A.i == B.i - 1`.                 |
+| `A $- B`                                | `B` is a left immediate sibling of `A`, i.e. `A` and `B` have the same parent and `A.i == B.i + 1`.                  |
+| `A $++ B`                               | `B` is a right sibling of `A`, i.e. `A` and `B` have the same parent and `A.i < B.i`.                                |
+| `A $-- B`                               | `B` is a left sibling of `A`, i.e. `A` and `B` have the same parent and `A.i > B.i`.                                 |
+| `A >+ B` <Tag variant="new">3.5.1</Tag> | `B` is a right immediate child of `A`, i.e. `A` is a parent of `B` and `A.i == B.i - 1` _(not in Semgrex)_.          |
+| `A >- B` <Tag variant="new">3.5.1</Tag> | `B` is a left immediate child of `A`, i.e. `A` is a parent of `B` and `A.i == B.i + 1` _(not in Semgrex)_.           |
+| `A >++ B`                               | `B` is a right child of `A`, i.e. `A` is a parent of `B` and `A.i < B.i` _(not in Semgrex)_.                         |
+| `A >-- B`                               | `B` is a left child of `A`, i.e. `A` is a parent of `B` and `A.i > B.i` _(not in Semgrex)_.                          |
+| `A <+ B` <Tag variant="new">3.5.1</Tag> | `B` is a right immediate parent of `A`, i.e. `A` is a child of `B` and `A.i == B.i - 1` _(not in Semgrex)_.          |
+| `A <- B` <Tag variant="new">3.5.1</Tag> | `B` is a left immediate parent of `A`, i.e. `A` is a child of `B` and `A.i == B.i + 1` _(not in Semgrex)_.           |
+| `A <++ B`                               | `B` is a right parent of `A`, i.e. `A` is a child of `B` and `A.i < B.i` _(not in Semgrex)_.                         |
+| `A <-- B`                               | `B` is a left parent of `A`, i.e. `A` is a child of `B` and `A.i > B.i` _(not in Semgrex)_.                          |
 
 ## DependencyMatcher.\_\_init\_\_ {id="init",tag="method"}
 

website/docs/api/entitylinker.mdx

@@ -53,19 +53,21 @@ architectures and their arguments and hyperparameters.
 > nlp.add_pipe("entity_linker", config=config)
 > ```
 
-| Setting                                  | Description                                                                                                                                                                                                                                                                                 |
-| ---------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `labels_discard`                         | NER labels that will automatically get a "NIL" prediction. Defaults to `[]`. ~~Iterable[str]~~                                                                                                                                                                                              |
-| `n_sents`                                | The number of neighbouring sentences to take into account. Defaults to 0. ~~int~~                                                                                                                                                                                                           |
-| `incl_prior`                             | Whether or not to include prior probabilities from the KB in the model. Defaults to `True`. ~~bool~~                                                                                                                                                                                        |
-| `incl_context`                           | Whether or not to include the local context in the model. Defaults to `True`. ~~bool~~                                                                                                                                                                                                      |
-| `model`                                  | The [`Model`](https://thinc.ai/docs/api-model) powering the pipeline component. Defaults to [EntityLinker](/api/architectures#EntityLinker). ~~Model~~                                                                                                                                      |
-| `entity_vector_length`                   | Size of encoding vectors in the KB. Defaults to `64`. ~~int~~                                                                                                                                                                                                                               |
-| `use_gold_ents`                          | Whether to copy entities from the gold docs or not. Defaults to `True`. If `False`, entities must be set in the training data or by an annotating component in the pipeline. ~~int~~                                                                                                        |
-| `get_candidates`                         | Function that generates plausible candidates for a given `Span` object. Defaults to [CandidateGenerator](/api/architectures#CandidateGenerator), a function looking up exact, case-dependent aliases in the KB. ~~Callable[[KnowledgeBase, Span], Iterable[Candidate]]~~                    |
-| `overwrite` <Tag variant="new">3.2</Tag> | Whether existing annotation is overwritten. Defaults to `True`. ~~bool~~                                                                                                                                                                                                                    |
-| `scorer` <Tag variant="new">3.2</Tag>    | The scoring method. Defaults to [`Scorer.score_links`](/api/scorer#score_links). ~~Optional[Callable]~~                                                                                                                                                                                     |
-| `threshold` <Tag variant="new">3.4</Tag> | Confidence threshold for entity predictions. The default of `None` implies that all predictions are accepted, otherwise those with a score beneath the treshold are discarded. If there are no predictions with scores above the threshold, the linked entity is `NIL`. ~~Optional[float]~~ |
+| Setting                                             | Description                                                                                                                                                                                                                                                                                                      |
+| --------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `labels_discard`                                    | NER labels that will automatically get a "NIL" prediction. Defaults to `[]`. ~~Iterable[str]~~                                                                                                                                                                                                                   |
+| `n_sents`                                           | The number of neighbouring sentences to take into account. Defaults to 0. ~~int~~                                                                                                                                                                                                                                |
+| `incl_prior`                                        | Whether or not to include prior probabilities from the KB in the model. Defaults to `True`. ~~bool~~                                                                                                                                                                                                             |
+| `incl_context`                                      | Whether or not to include the local context in the model. Defaults to `True`. ~~bool~~                                                                                                                                                                                                                           |
+| `model`                                             | The [`Model`](https://thinc.ai/docs/api-model) powering the pipeline component. Defaults to [EntityLinker](/api/architectures#EntityLinker). ~~Model~~                                                                                                                                                           |
+| `entity_vector_length`                              | Size of encoding vectors in the KB. Defaults to `64`. ~~int~~                                                                                                                                                                                                                                                    |
+| `use_gold_ents`                                     | Whether to copy entities from the gold docs or not. Defaults to `True`. If `False`, entities must be set in the training data or by an annotating component in the pipeline. ~~int~~                                                                                                                             |
+| `get_candidates`                                    | Function that generates plausible candidates for a given `Span` object. Defaults to [CandidateGenerator](/api/architectures#CandidateGenerator), a function looking up exact, case-dependent aliases in the KB. ~~Callable[[KnowledgeBase, Span], Iterable[Candidate]]~~                                         |
+| `get_candidates_batch` <Tag variant="new">3.5</Tag> | Function that generates plausible candidates for a given batch of `Span` objects. Defaults to [CandidateBatchGenerator](/api/architectures#CandidateBatchGenerator), a function looking up exact, case-dependent aliases in the KB. ~~Callable[[KnowledgeBase, Iterable[Span]], Iterable[Iterable[Candidate]]]~~ |
+| `generate_empty_kb` <Tag variant="new">3.6</Tag>    | Function that generates an empty `KnowledgeBase` object. Defaults to [`spacy.EmptyKB.v2`](/api/architectures#EmptyKB), which generates an empty [`InMemoryLookupKB`](/api/inmemorylookupkb). ~~Callable[[Vocab, int], KnowledgeBase]~~                                                                           |
+| `overwrite` <Tag variant="new">3.2</Tag>            | Whether existing annotation is overwritten. Defaults to `True`. ~~bool~~                                                                                                                                                                                                                                         |
+| `scorer` <Tag variant="new">3.2</Tag>               | The scoring method. Defaults to [`Scorer.score_links`](/api/scorer#score_links). ~~Optional[Callable]~~                                                                                                                                                                                                          |
+| `threshold` <Tag variant="new">3.4</Tag>            | Confidence threshold for entity predictions. The default of `None` implies that all predictions are accepted, otherwise those with a score beneath the treshold are discarded. If there are no predictions with scores above the threshold, the linked entity is `NIL`. ~~Optional[float]~~                      |
 
 ```python
 %%GITHUB_SPACY/spacy/pipeline/entity_linker.py

website/docs/api/spancategorizer.mdx

@@ -13,6 +13,13 @@ A span categorizer consists of two parts: a [suggester function](#suggesters)
 that proposes candidate spans, which may or may not overlap, and a labeler model
 that predicts zero or more labels for each candidate.
 
+This component comes in two forms: `spancat` and `spancat_singlelabel` (added in
+spaCy v3.5.1). When you need to perform multi-label classification on your
+spans, use `spancat`. The `spancat` component uses a `Logistic` layer where the
+output class probabilities are independent for each class. However, if you need
+to predict at most one true class for a span, then use `spancat_singlelabel`. It
+uses a `Softmax` layer and treats the task as a multi-class problem.
+
 Predicted spans will be saved in a [`SpanGroup`](/api/spangroup) on the doc.
 Individual span scores can be found in `spangroup.attrs["scores"]`.
 
@@ -38,7 +45,7 @@ how the component should be configured. You can override its settings via the
 [model architectures](/api/architectures) documentation for details on the
 architectures and their arguments and hyperparameters.
 
-> #### Example
+> #### Example (spancat)
 >
 > ```python
 > from spacy.pipeline.spancat import DEFAULT_SPANCAT_MODEL
@@ -52,14 +59,33 @@ architectures and their arguments and hyperparameters.
 > nlp.add_pipe("spancat", config=config)
 > ```
 
-| Setting        | Description                                                                                                                                                                                                                                                                                             |
-| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `suggester`    | A function that [suggests spans](#suggesters). Spans are returned as a ragged array with two integer columns, for the start and end positions. Defaults to [`ngram_suggester`](#ngram_suggester). ~~Callable[[Iterable[Doc], Optional[Ops]], Ragged]~~                                                  |
-| `model`        | A model instance that is given a a list of documents and `(start, end)` indices representing candidate span offsets. The model predicts a probability for each category for each span. Defaults to [SpanCategorizer](/api/architectures#SpanCategorizer). ~~Model[Tuple[List[Doc], Ragged], Floats2d]~~ |
-| `spans_key`    | Key of the [`Doc.spans`](/api/doc#spans) dict to save the spans under. During initialization and training, the component will look for spans on the reference document under the same key. Defaults to `"sc"`. ~~str~~                                                                                  |
-| `threshold`    | Minimum probability to consider a prediction positive. Spans with a positive prediction will be saved on the Doc. Defaults to `0.5`. ~~float~~                                                                                                                                                          |
-| `max_positive` | Maximum number of labels to consider positive per span. Defaults to `None`, indicating no limit. ~~Optional[int]~~                                                                                                                                                                                      |
-| `scorer`       | The scoring method. Defaults to [`Scorer.score_spans`](/api/scorer#score_spans) for `Doc.spans[spans_key]` with overlapping spans allowed. ~~Optional[Callable]~~                                                                                                                                       |
+> #### Example (spancat_singlelabel)
+>
+> ```python
+> from spacy.pipeline.spancat import DEFAULT_SPANCAT_SINGLELABEL_MODEL
+> config = {
+>     "threshold": 0.5,
+>     "spans_key": "labeled_spans",
+>     "model": DEFAULT_SPANCAT_SINGLELABEL_MODEL,
+>     "suggester": {"@misc": "spacy.ngram_suggester.v1", "sizes": [1, 2, 3]},
+>     # Additional spancat_singlelabel parameters
+>     "negative_weight": 0.8,
+>     "allow_overlap": True,
+> }
+> nlp.add_pipe("spancat_singlelabel", config=config)
+> ```
+
+| Setting                                             | Description                                                                                                                                                                                                                                                                                             |
+| --------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `suggester`                                         | A function that [suggests spans](#suggesters). Spans are returned as a ragged array with two integer columns, for the start and end positions. Defaults to [`ngram_suggester`](#ngram_suggester). ~~Callable[[Iterable[Doc], Optional[Ops]], Ragged]~~                                                  |
+| `model`                                             | A model instance that is given a a list of documents and `(start, end)` indices representing candidate span offsets. The model predicts a probability for each category for each span. Defaults to [SpanCategorizer](/api/architectures#SpanCategorizer). ~~Model[Tuple[List[Doc], Ragged], Floats2d]~~ |
+| `spans_key`                                         | Key of the [`Doc.spans`](/api/doc#spans) dict to save the spans under. During initialization and training, the component will look for spans on the reference document under the same key. Defaults to `"sc"`. ~~str~~                                                                                  |
+| `threshold`                                         | Minimum probability to consider a prediction positive. Spans with a positive prediction will be saved on the Doc. Meant to be used in combination with the multi-class `spancat` component with a `Logistic` scoring layer. Defaults to `0.5`. ~~float~~                                                |
+| `max_positive`                                      | Maximum number of labels to consider positive per span. Defaults to `None`, indicating no limit. Meant to be used together with the `spancat` component and defaults to 0 with `spancat_singlelabel`. ~~Optional[int]~~                                                                                 |
+| `scorer`                                            | The scoring method. Defaults to [`Scorer.score_spans`](/api/scorer#score_spans) for `Doc.spans[spans_key]` with overlapping spans allowed. ~~Optional[Callable]~~                                                                                                                                       |
+| `add_negative_label` <Tag variant="new">3.5.1</Tag> | Whether to learn to predict a special negative label for each unannotated `Span` . This should be `True` when using a `Softmax` classifier layer and so its `True` by default for `spancat_singlelabel`. Spans with negative labels and their scores are not stored as annotations. ~~bool~~            |
+| `negative_weight` <Tag variant="new">3.5.1</Tag>    | Multiplier for the loss terms. It can be used to downweight the negative samples if there are too many. It is only used when `add_negative_label` is `True`. Defaults to `1.0`. ~~float~~                                                                                                               |
+| `allow_overlap` <Tag variant="new">3.5.1</Tag>      | If `True`, the data is assumed to contain overlapping spans. It is only available when `max_positive` is exactly 1. Defaults to `True`. ~~bool~~                                                                                                                                                        |
 
 ```python
 %%GITHUB_SPACY/spacy/pipeline/spancat.py
@@ -71,6 +97,7 @@ architectures and their arguments and hyperparameters.
 >
 > ```python
 > # Construction via add_pipe with default model
+> # Replace 'spancat' with 'spancat_singlelabel' for exclusive classes
 > spancat = nlp.add_pipe("spancat")
 >
 > # Construction via add_pipe with custom model
@@ -86,16 +113,19 @@ Create a new pipeline instance. In your application, you would normally use a
 shortcut for this and instantiate the component using its string name and
 [`nlp.add_pipe`](/api/language#create_pipe).
 
-| Name           | Description                                                                                                                                                                                                                          |
-| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
-| `vocab`        | The shared vocabulary. ~~Vocab~~                                                                                                                                                                                                     |
-| `model`        | A model instance that is given a a list of documents and `(start, end)` indices representing candidate span offsets. The model predicts a probability for each category for each span. ~~Model[Tuple[List[Doc], Ragged], Floats2d]~~ |
-| `suggester`    | A function that [suggests spans](#suggesters). Spans are returned as a ragged array with two integer columns, for the start and end positions. ~~Callable[[Iterable[Doc], Optional[Ops]], Ragged]~~                                  |
-| `name`         | String name of the component instance. Used to add entries to the `losses` during training. ~~str~~                                                                                                                                  |
-| _keyword-only_ |                                                                                                                                                                                                                                      |
-| `spans_key`    | Key of the [`Doc.spans`](/api/doc#sans) dict to save the spans under. During initialization and training, the component will look for spans on the reference document under the same key. Defaults to `"sc"`. ~~str~~                |
-| `threshold`    | Minimum probability to consider a prediction positive. Spans with a positive prediction will be saved on the Doc. Defaults to `0.5`. ~~float~~                                                                                       |
-| `max_positive` | Maximum number of labels to consider positive per span. Defaults to `None`, indicating no limit. ~~Optional[int]~~                                                                                                                   |
+| Name                                                | Description                                                                                                                                                                                                                                                                                  |
+| --------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `vocab`                                             | The shared vocabulary. ~~Vocab~~                                                                                                                                                                                                                                                             |
+| `model`                                             | A model instance that is given a a list of documents and `(start, end)` indices representing candidate span offsets. The model predicts a probability for each category for each span. ~~Model[Tuple[List[Doc], Ragged], Floats2d]~~                                                         |
+| `suggester`                                         | A function that [suggests spans](#suggesters). Spans are returned as a ragged array with two integer columns, for the start and end positions. ~~Callable[[Iterable[Doc], Optional[Ops]], Ragged]~~                                                                                          |
+| `name`                                              | String name of the component instance. Used to add entries to the `losses` during training. ~~str~~                                                                                                                                                                                          |
+| _keyword-only_                                      |                                                                                                                                                                                                                                                                                              |
+| `spans_key`                                         | Key of the [`Doc.spans`](/api/doc#sans) dict to save the spans under. During initialization and training, the component will look for spans on the reference document under the same key. Defaults to `"sc"`. ~~str~~                                                                        |
+| `threshold`                                         | Minimum probability to consider a prediction positive. Spans with a positive prediction will be saved on the Doc. Defaults to `0.5`. ~~float~~                                                                                                                                               |
+| `max_positive`                                      | Maximum number of labels to consider positive per span. Defaults to `None`, indicating no limit. ~~Optional[int]~~                                                                                                                                                                           |
+| `allow_overlap` <Tag variant="new">3.5.1</Tag>      | If `True`, the data is assumed to contain overlapping spans. It is only available when `max_positive` is exactly 1. Defaults to `True`. ~~bool~~                                                                                                                                             |
+| `add_negative_label` <Tag variant="new">3.5.1</Tag> | Whether to learn to predict a special negative label for each unannotated `Span`. This should be `True` when using a `Softmax` classifier layer and so its `True` by default for `spancat_singlelabel` . Spans with negative labels and their scores are not stored as annotations. ~~bool~~ |
+| `negative_weight` <Tag variant="new">3.5.1</Tag>    | Multiplier for the loss terms. It can be used to downweight the negative samples if there are too many . It is only used when `add_negative_label` is `True`. Defaults to `1.0`. ~~float~~                                                                                                   |
 
 ## SpanCategorizer.\_\_call\_\_ {id="call",tag="method"}
 

website/docs/api/top-level.mdx

@@ -354,22 +354,22 @@ If a setting is not present in the options, the default value will be used.
 > displacy.serve(doc, style="dep", options=options)
 > ```
 
-| Name               | Description                                                                                                                                  |
-| ------------------ | -------------------------------------------------------------------------------------------------------------------------------------------- |
-| `fine_grained`     | Use fine-grained part-of-speech tags (`Token.tag_`) instead of coarse-grained tags (`Token.pos_`). Defaults to `False`. ~~bool~~             |
-| `add_lemma`        | Print the lemmas in a separate row below the token texts. Defaults to `False`. ~~bool~~                                                      |
-| `collapse_punct`   | Attach punctuation to tokens. Can make the parse more readable, as it prevents long arcs to attach punctuation. Defaults to `True`. ~~bool~~ |
-| `collapse_phrases` | Merge noun phrases into one token. Defaults to `False`. ~~bool~~                                                                             |
-| `compact`          | "Compact mode" with square arrows that takes up less space. Defaults to `False`. ~~bool~~                                                    |
-| `color`            | Text color (HEX, RGB or color names). Defaults to `"#000000"`. ~~str~~                                                                       |
-| `bg`               | Background color (HEX, RGB or color names). Defaults to `"#ffffff"`. ~~str~~                                                                 |
-| `font`             | Font name or font family for all text. Defaults to `"Arial"`. ~~str~~                                                                        |
-| `offset_x`         | Spacing on left side of the SVG in px. Defaults to `50`. ~~int~~                                                                             |
-| `arrow_stroke`     | Width of arrow path in px. Defaults to `2`. ~~int~~                                                                                          |
-| `arrow_width`      | Width of arrow head in px. Defaults to `10` in regular mode and `8` in compact mode. ~~int~~                                                 |
-| `arrow_spacing`    | Spacing between arrows in px to avoid overlaps. Defaults to `20` in regular mode and `12` in compact mode. ~~int~~                           |
-| `word_spacing`     | Vertical spacing between words and arcs in px. Defaults to `45`. ~~int~~                                                                     |
-| `distance`         | Distance between words in px. Defaults to `175` in regular mode and `150` in compact mode. ~~int~~                                           |
+| Name               | Description                                                                                                                                                                                                                                   |
+| ------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `fine_grained`     | Use fine-grained part-of-speech tags (`Token.tag_`) instead of coarse-grained tags (`Token.pos_`). Defaults to `False`. ~~bool~~                                                                                                              |
+| `add_lemma`        | Print the lemmas in a separate row below the token texts. Defaults to `False`. ~~bool~~                                                                                                                                                       |
+| `collapse_punct`   | Attach punctuation to tokens. Can make the parse more readable, as it prevents long arcs to attach punctuation. Defaults to `True`. ~~bool~~                                                                                                  |
+| `collapse_phrases` | Merge noun phrases into one token. Defaults to `False`. ~~bool~~                                                                                                                                                                              |
+| `compact`          | "Compact mode" with square arrows that takes up less space. Defaults to `False`. ~~bool~~                                                                                                                                                     |
+| `color`            | Text color. Can be provided in any CSS legal format as a string e.g.: `"#00ff00"`, `"rgb(0, 255, 0)"`, `"hsl(120, 100%, 50%)"` and `"green"` all correspond to the color green (without transparency). Defaults to `"#000000"`. ~~str~~       |
+| `bg`               | Background color. Can be provided in any CSS legal format as a string e.g.: `"#00ff00"`, `"rgb(0, 255, 0)"`, `"hsl(120, 100%, 50%)"` and `"green"` all correspond to the color green (without transparency). Defaults to `"#ffffff"`. ~~str~~ |
+| `font`             | Font name or font family for all text. Defaults to `"Arial"`. ~~str~~                                                                                                                                                                         |
+| `offset_x`         | Spacing on left side of the SVG in px. Defaults to `50`. ~~int~~                                                                                                                                                                              |
+| `arrow_stroke`     | Width of arrow path in px. Defaults to `2`. ~~int~~                                                                                                                                                                                           |
+| `arrow_width`      | Width of arrow head in px. Defaults to `10` in regular mode and `8` in compact mode. ~~int~~                                                                                                                                                  |
+| `arrow_spacing`    | Spacing between arrows in px to avoid overlaps. Defaults to `20` in regular mode and `12` in compact mode. ~~int~~                                                                                                                            |
+| `word_spacing`     | Vertical spacing between words and arcs in px. Defaults to `45`. ~~int~~                                                                                                                                                                      |
+| `distance`         | Distance between words in px. Defaults to `175` in regular mode and `150` in compact mode. ~~int~~                                                                                                                                            |
 
 #### Named Entity Visualizer options {id="displacy_options-ent"}
 

website/docs/usage/rule-based-matching.mdx

@@ -1096,20 +1096,28 @@ The following operators are supported by the `DependencyMatcher`, most of which
 come directly from
 [Semgrex](https://nlp.stanford.edu/nlp/javadoc/javanlp/edu/stanford/nlp/semgraph/semgrex/SemgrexPattern.html):
 
-| Symbol    | Description                                                                                                          |
-| --------- | -------------------------------------------------------------------------------------------------------------------- |
-| `A < B`   | `A` is the immediate dependent of `B`.                                                                               |
-| `A > B`   | `A` is the immediate head of `B`.                                                                                    |
-| `A << B`  | `A` is the dependent in a chain to `B` following dep &rarr; head paths.                                              |
-| `A >> B`  | `A` is the head in a chain to `B` following head &rarr; dep paths.                                                   |
-| `A . B`   | `A` immediately precedes `B`, i.e. `A.i == B.i - 1`, and both are within the same dependency tree.                   |
-| `A .* B`  | `A` precedes `B`, i.e. `A.i < B.i`, and both are within the same dependency tree _(not in Semgrex)_.                 |
-| `A ; B`   | `A` immediately follows `B`, i.e. `A.i == B.i + 1`, and both are within the same dependency tree _(not in Semgrex)_. |
-| `A ;* B`  | `A` follows `B`, i.e. `A.i > B.i`, and both are within the same dependency tree _(not in Semgrex)_.                  |
-| `A $+ B`  | `B` is a right immediate sibling of `A`, i.e. `A` and `B` have the same parent and `A.i == B.i - 1`.                 |
-| `A $- B`  | `B` is a left immediate sibling of `A`, i.e. `A` and `B` have the same parent and `A.i == B.i + 1`.                  |
-| `A $++ B` | `B` is a right sibling of `A`, i.e. `A` and `B` have the same parent and `A.i < B.i`.                                |
-| `A $-- B` | `B` is a left sibling of `A`, i.e. `A` and `B` have the same parent and `A.i > B.i`.                                 |
+| Symbol                                  | Description                                                                                                          |
+| --------------------------------------- | -------------------------------------------------------------------------------------------------------------------- |
+| `A < B`                                 | `A` is the immediate dependent of `B`.                                                                               |
+| `A > B`                                 | `A` is the immediate head of `B`.                                                                                    |
+| `A << B`                                | `A` is the dependent in a chain to `B` following dep &rarr; head paths.                                              |
+| `A >> B`                                | `A` is the head in a chain to `B` following head &rarr; dep paths.                                                   |
+| `A . B`                                 | `A` immediately precedes `B`, i.e. `A.i == B.i - 1`, and both are within the same dependency tree.                   |
+| `A .* B`                                | `A` precedes `B`, i.e. `A.i < B.i`, and both are within the same dependency tree _(not in Semgrex)_.                 |
+| `A ; B`                                 | `A` immediately follows `B`, i.e. `A.i == B.i + 1`, and both are within the same dependency tree _(not in Semgrex)_. |
+| `A ;* B`                                | `A` follows `B`, i.e. `A.i > B.i`, and both are within the same dependency tree _(not in Semgrex)_.                  |
+| `A $+ B`                                | `B` is a right immediate sibling of `A`, i.e. `A` and `B` have the same parent and `A.i == B.i - 1`.                 |
+| `A $- B`                                | `B` is a left immediate sibling of `A`, i.e. `A` and `B` have the same parent and `A.i == B.i + 1`.                  |
+| `A $++ B`                               | `B` is a right sibling of `A`, i.e. `A` and `B` have the same parent and `A.i < B.i`.                                |
+| `A $-- B`                               | `B` is a left sibling of `A`, i.e. `A` and `B` have the same parent and `A.i > B.i`.                                 |
+| `A >+ B` <Tag variant="new">3.5.1</Tag> | `B` is a right immediate child of `A`, i.e. `A` is a parent of `B` and `A.i == B.i - 1` _(not in Semgrex)_.          |
+| `A >- B` <Tag variant="new">3.5.1</Tag> | `B` is a left immediate child of `A`, i.e. `A` is a parent of `B` and `A.i == B.i + 1` _(not in Semgrex)_.           |
+| `A >++ B`                               | `B` is a right child of `A`, i.e. `A` is a parent of `B` and `A.i < B.i` _(not in Semgrex)_.                         |
+| `A >-- B`                               | `B` is a left child of `A`, i.e. `A` is a parent of `B` and `A.i > B.i` _(not in Semgrex)_.                          |
+| `A <+ B` <Tag variant="new">3.5.1</Tag> | `B` is a right immediate parent of `A`, i.e. `A` is a child of `B` and `A.i == B.i - 1` _(not in Semgrex)_.          |
+| `A <- B` <Tag variant="new">3.5.1</Tag> | `B` is a left immediate parent of `A`, i.e. `A` is a child of `B` and `A.i == B.i + 1` _(not in Semgrex)_.           |
+| `A <++ B`                               | `B` is a right parent of `A`, i.e. `A` is a child of `B` and `A.i < B.i` _(not in Semgrex)_.                         |
+| `A <-- B`                               | `B` is a left parent of `A`, i.e. `A` is a child of `B` and `A.i > B.i` _(not in Semgrex)_.                          |
 
 ### Designing dependency matcher patterns {id="dependencymatcher-patterns"}
 

website/docs/usage/visualizers.mdx

@@ -58,12 +58,12 @@ arcs.
 
 </Infobox>
 
-| Argument  | Description                                                                               |
-| --------- | ----------------------------------------------------------------------------------------- |
-| `compact` | "Compact mode" with square arrows that takes up less space. Defaults to `False`. ~~bool~~ |
-| `color`   | Text color (HEX, RGB or color names). Defaults to `"#000000"`. ~~str~~                    |
-| `bg`      | Background color (HEX, RGB or color names). Defaults to `"#ffffff"`. ~~str~~              |
-| `font`    | Font name or font family for all text. Defaults to `"Arial"`. ~~str~~                     |
+| Argument  | Description                                                                                                                                                                                                                                   |
+| --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `compact` | "Compact mode" with square arrows that takes up less space. Defaults to `False`. ~~bool~~                                                                                                                                                     |
+| `color`   | Text color. Can be provided in any CSS legal format as a string e.g.: `"#00ff00"`, `"rgb(0, 255, 0)"`, `"hsl(120, 100%, 50%)"` and `"green"` all correspond to the color green (without transparency). Defaults to `"#000000"`. ~~str~~       |
+| `bg`      | Background color. Can be provided in any CSS legal format as a string e.g.: `"#00ff00"`, `"rgb(0, 255, 0)"`, `"hsl(120, 100%, 50%)"` and `"green"` all correspond to the color green (without transparency). Defaults to `"#ffffff"`. ~~str~~ |
+| `font`    | Font name or font family for all text. Defaults to `"Arial"`. ~~str~~                                                                                                                                                                         |
 
 For a list of all available options, see the
 [`displacy` API documentation](/api/top-level#displacy_options).

website/package.json

@@ -6,6 +6,7 @@
     "dev": "next dev",
     "build": "next build && npm run sitemap && next export",
     "prebuild": "pip install -r setup/requirements.txt && sh setup/setup.sh",
+    "predev": "npm run prebuild",
     "sitemap": "next-sitemap --config next-sitemap.config.mjs",
     "start": "next start",
     "lint": "next lint",

website/src/templates/index.js

@@ -25,6 +25,11 @@ const AlertSpace = ({ nightly, legacy }) => {
     const isOnline = useOnlineStatus()
     return (
         <>
+            {isOnline && (
+                <Alert title="💥 We'd love to learn more about your experience with spaCy!">
+                    <Link to="https://form.typeform.com/to/aMel9q9f">Take our survey here.</Link>
+                </Alert>
+            )}
             {nightly && (
                 <Alert
                     title="You're viewing the pre-release docs."