Merge pull request #5755 from adrianeboyd/v2.3.x

Update v2.3.x from master

.github/contributors/gandersen101.md

@@ -0,0 +1,106 @@
+# spaCy contributor agreement
+
+This spaCy Contributor Agreement (**"SCA"**) is based on the
+[Oracle Contributor Agreement](http://www.oracle.com/technetwork/oca-405177.pdf).
+The SCA applies to any contribution that you make to any product or project
+managed by us (the **"project"**), and sets out the intellectual property rights
+you grant to us in the contributed materials. The term **"us"** shall mean
+[ExplosionAI GmbH](https://explosion.ai/legal). The term
+**"you"** shall mean the person or entity identified below.
+
+If you agree to be bound by these terms, fill in the information requested
+below and include the filled-in version with your first pull request, under the
+folder [`.github/contributors/`](/.github/contributors/). The name of the file
+should be your GitHub username, with the extension `.md`. For example, the user
+example_user would create the file `.github/contributors/example_user.md`.
+
+Read this agreement carefully before signing. These terms and conditions
+constitute a binding legal agreement.
+
+## Contributor Agreement
+
+1. The term "contribution" or "contributed materials" means any source code,
+object code, patch, tool, sample, graphic, specification, manual,
+documentation, or any other material posted or submitted by you to the project.
+
+2. With respect to any worldwide copyrights, or copyright applications and
+registrations, in your contribution:
+
+    * you hereby assign to us joint ownership, and to the extent that such
+    assignment is or becomes invalid, ineffective or unenforceable, you hereby
+    grant to us a perpetual, irrevocable, non-exclusive, worldwide, no-charge,
+    royalty-free, unrestricted license to exercise all rights under those
+    copyrights. This includes, at our option, the right to sublicense these same
+    rights to third parties through multiple levels of sublicensees or other
+    licensing arrangements;
+
+    * you agree that each of us can do all things in relation to your
+    contribution as if each of us were the sole owners, and if one of us makes
+    a derivative work of your contribution, the one who makes the derivative
+    work (or has it made will be the sole owner of that derivative work;
+
+    * you agree that you will not assert any moral rights in your contribution
+    against us, our licensees or transferees;
+
+    * you agree that we may register a copyright in your contribution and
+    exercise all ownership rights associated with it; and
+
+    * you agree that neither of us has any duty to consult with, obtain the
+    consent of, pay or render an accounting to the other for any use or
+    distribution of your contribution.
+
+3. With respect to any patents you own, or that you can license without payment
+to any third party, you hereby grant to us a perpetual, irrevocable,
+non-exclusive, worldwide, no-charge, royalty-free license to:
+
+    * make, have made, use, sell, offer to sell, import, and otherwise transfer
+    your contribution in whole or in part, alone or in combination with or
+    included in any product, work or materials arising out of the project to
+    which your contribution was submitted, and
+
+    * at our option, to sublicense these same rights to third parties through
+    multiple levels of sublicensees or other licensing arrangements.
+
+4. Except as set out above, you keep all right, title, and interest in your
+contribution. The rights that you grant to us under these terms are effective
+on the date you first submitted a contribution to us, even if your submission
+took place before the date you sign these terms.
+
+5. You covenant, represent, warrant and agree that:
+
+    * Each contribution that you submit is and shall be an original work of
+    authorship and you can legally grant the rights set out in this SCA;
+
+    * to the best of your knowledge, each contribution will not violate any
+    third party's copyrights, trademarks, patents, or other intellectual
+    property rights; and
+
+    * each contribution shall be in compliance with U.S. export control laws and
+    other applicable export and import laws. You agree to notify us if you
+    become aware of any circumstance which would make any of the foregoing
+    representations inaccurate in any respect. We may publicly disclose your
+    participation in the project, including the fact that you have signed the SCA.
+
+6. This SCA is governed by the laws of the State of California and applicable
+U.S. Federal law. Any choice of law rules will not apply.
+
+7. Please place an “x” on one of the applicable statement below. Please do NOT
+mark both statements:
+
+    * [ x] I am signing on behalf of myself as an individual and no other person
+    or entity, including my employer, has or will have rights with respect to my
+    contributions.
+
+    * [ ] I am signing on behalf of my employer or a legal entity and I have the
+    actual authority to contractually bind that entity.
+
+## Contributor Details
+
+| Field                          | Entry                |
+|------------------------------- | -------------------- |
+| Name                           | Grant Andersen       |
+| Company name (if applicable)   |                      |
+| Title or role (if applicable)  |                      |
+| Date                           | 07.06.2020           |
+| GitHub username                | gandersen101         |
+| Website (optional)             |                      |

.github/contributors/jbesomi.md

@@ -0,0 +1,106 @@
+# spaCy contributor agreement
+
+This spaCy Contributor Agreement (**"SCA"**) is based on the
+[Oracle Contributor Agreement](http://www.oracle.com/technetwork/oca-405177.pdf).
+The SCA applies to any contribution that you make to any product or project
+managed by us (the **"project"**), and sets out the intellectual property rights
+you grant to us in the contributed materials. The term **"us"** shall mean
+[ExplosionAI GmbH](https://explosion.ai/legal). The term
+**"you"** shall mean the person or entity identified below.
+
+If you agree to be bound by these terms, fill in the information requested
+below and include the filled-in version with your first pull request, under the
+folder [`.github/contributors/`](/.github/contributors/). The name of the file
+should be your GitHub username, with the extension `.md`. For example, the user
+example_user would create the file `.github/contributors/example_user.md`.
+
+Read this agreement carefully before signing. These terms and conditions
+constitute a binding legal agreement.
+
+## Contributor Agreement
+
+1. The term "contribution" or "contributed materials" means any source code,
+object code, patch, tool, sample, graphic, specification, manual,
+documentation, or any other material posted or submitted by you to the project.
+
+2. With respect to any worldwide copyrights, or copyright applications and
+registrations, in your contribution:
+
+    * you hereby assign to us joint ownership, and to the extent that such
+    assignment is or becomes invalid, ineffective or unenforceable, you hereby
+    grant to us a perpetual, irrevocable, non-exclusive, worldwide, no-charge,
+    royalty-free, unrestricted license to exercise all rights under those
+    copyrights. This includes, at our option, the right to sublicense these same
+    rights to third parties through multiple levels of sublicensees or other
+    licensing arrangements;
+
+    * you agree that each of us can do all things in relation to your
+    contribution as if each of us were the sole owners, and if one of us makes
+    a derivative work of your contribution, the one who makes the derivative
+    work (or has it made will be the sole owner of that derivative work;
+
+    * you agree that you will not assert any moral rights in your contribution
+    against us, our licensees or transferees;
+
+    * you agree that we may register a copyright in your contribution and
+    exercise all ownership rights associated with it; and
+
+    * you agree that neither of us has any duty to consult with, obtain the
+    consent of, pay or render an accounting to the other for any use or
+    distribution of your contribution.
+
+3. With respect to any patents you own, or that you can license without payment
+to any third party, you hereby grant to us a perpetual, irrevocable,
+non-exclusive, worldwide, no-charge, royalty-free license to:
+
+    * make, have made, use, sell, offer to sell, import, and otherwise transfer
+    your contribution in whole or in part, alone or in combination with or
+    included in any product, work or materials arising out of the project to
+    which your contribution was submitted, and
+
+    * at our option, to sublicense these same rights to third parties through
+    multiple levels of sublicensees or other licensing arrangements.
+
+4. Except as set out above, you keep all right, title, and interest in your
+contribution. The rights that you grant to us under these terms are effective
+on the date you first submitted a contribution to us, even if your submission
+took place before the date you sign these terms.
+
+5. You covenant, represent, warrant and agree that:
+
+    * Each contribution that you submit is and shall be an original work of
+    authorship and you can legally grant the rights set out in this SCA;
+
+    * to the best of your knowledge, each contribution will not violate any
+    third party's copyrights, trademarks, patents, or other intellectual
+    property rights; and
+
+    * each contribution shall be in compliance with U.S. export control laws and
+    other applicable export and import laws. You agree to notify us if you
+    become aware of any circumstance which would make any of the foregoing
+    representations inaccurate in any respect. We may publicly disclose your
+    participation in the project, including the fact that you have signed the SCA.
+
+6. This SCA is governed by the laws of the State of California and applicable
+U.S. Federal law. Any choice of law rules will not apply.
+
+7. Please place an “x” on one of the applicable statement below. Please do NOT
+mark both statements:
+
+    * [x] I am signing on behalf of myself as an individual and no other person
+    or entity, including my employer, has or will have rights with respect to my
+    contributions.
+
+    * [ ] I am signing on behalf of my employer or a legal entity and I have the
+    actual authority to contractually bind that entity.
+
+## Contributor Details
+
+| Field                          | Entry                |
+|------------------------------- | -------------------- |
+| Name                           | Jonathan B.          |
+| Company name (if applicable)   | besomi.ai            |
+| Title or role (if applicable)  | -                    |
+| Date                           | 07.07.2020           |
+| GitHub username                | jbesomi              |
+| Website (optional)             | besomi.ai            |

.github/contributors/mikeizbicki.md

@@ -0,0 +1,106 @@
+# spaCy contributor agreement
+
+This spaCy Contributor Agreement (**"SCA"**) is based on the
+[Oracle Contributor Agreement](http://www.oracle.com/technetwork/oca-405177.pdf).
+The SCA applies to any contribution that you make to any product or project
+managed by us (the **"project"**), and sets out the intellectual property rights
+you grant to us in the contributed materials. The term **"us"** shall mean
+[ExplosionAI GmbH](https://explosion.ai/legal). The term
+**"you"** shall mean the person or entity identified below.
+
+If you agree to be bound by these terms, fill in the information requested
+below and include the filled-in version with your first pull request, under the
+folder [`.github/contributors/`](/.github/contributors/). The name of the file
+should be your GitHub username, with the extension `.md`. For example, the user
+example_user would create the file `.github/contributors/example_user.md`.
+
+Read this agreement carefully before signing. These terms and conditions
+constitute a binding legal agreement.
+
+## Contributor Agreement
+
+1. The term "contribution" or "contributed materials" means any source code,
+object code, patch, tool, sample, graphic, specification, manual,
+documentation, or any other material posted or submitted by you to the project.
+
+2. With respect to any worldwide copyrights, or copyright applications and
+registrations, in your contribution:
+
+    * you hereby assign to us joint ownership, and to the extent that such
+    assignment is or becomes invalid, ineffective or unenforceable, you hereby
+    grant to us a perpetual, irrevocable, non-exclusive, worldwide, no-charge,
+    royalty-free, unrestricted license to exercise all rights under those
+    copyrights. This includes, at our option, the right to sublicense these same
+    rights to third parties through multiple levels of sublicensees or other
+    licensing arrangements;
+
+    * you agree that each of us can do all things in relation to your
+    contribution as if each of us were the sole owners, and if one of us makes
+    a derivative work of your contribution, the one who makes the derivative
+    work (or has it made will be the sole owner of that derivative work;
+
+    * you agree that you will not assert any moral rights in your contribution
+    against us, our licensees or transferees;
+
+    * you agree that we may register a copyright in your contribution and
+    exercise all ownership rights associated with it; and
+
+    * you agree that neither of us has any duty to consult with, obtain the
+    consent of, pay or render an accounting to the other for any use or
+    distribution of your contribution.
+
+3. With respect to any patents you own, or that you can license without payment
+to any third party, you hereby grant to us a perpetual, irrevocable,
+non-exclusive, worldwide, no-charge, royalty-free license to:
+
+    * make, have made, use, sell, offer to sell, import, and otherwise transfer
+    your contribution in whole or in part, alone or in combination with or
+    included in any product, work or materials arising out of the project to
+    which your contribution was submitted, and
+
+    * at our option, to sublicense these same rights to third parties through
+    multiple levels of sublicensees or other licensing arrangements.
+
+4. Except as set out above, you keep all right, title, and interest in your
+contribution. The rights that you grant to us under these terms are effective
+on the date you first submitted a contribution to us, even if your submission
+took place before the date you sign these terms.
+
+5. You covenant, represent, warrant and agree that:
+
+    * Each contribution that you submit is and shall be an original work of
+    authorship and you can legally grant the rights set out in this SCA;
+
+    * to the best of your knowledge, each contribution will not violate any
+    third party's copyrights, trademarks, patents, or other intellectual
+    property rights; and
+
+    * each contribution shall be in compliance with U.S. export control laws and
+    other applicable export and import laws. You agree to notify us if you
+    become aware of any circumstance which would make any of the foregoing
+    representations inaccurate in any respect. We may publicly disclose your
+    participation in the project, including the fact that you have signed the SCA.
+
+6. This SCA is governed by the laws of the State of California and applicable
+U.S. Federal law. Any choice of law rules will not apply.
+
+7. Please place an “x” on one of the applicable statement below. Please do NOT
+mark both statements:
+
+    * [x] I am signing on behalf of myself as an individual and no other person
+    or entity, including my employer, has or will have rights with respect to my
+    contributions.
+
+    * [ ] I am signing on behalf of my employer or a legal entity and I have the
+    actual authority to contractually bind that entity.
+
+## Contributor Details
+
+| Field                          | Entry                |
+|------------------------------- | -------------------- |
+| Name                           | Mike Izbicki         |
+| Company name (if applicable)   |                      |
+| Title or role (if applicable)  |                      |
+| Date                           | 02 Jun 2020          |
+| GitHub username                | mikeizbicki          |
+| Website (optional)             | https://izbicki.me   |

spacy/_ml.py

@@ -14,7 +14,7 @@ from thinc.api import with_getitem, flatten_add_lengths
 from thinc.api import uniqued, wrap, noop
 from thinc.linear.linear import LinearModel
 from thinc.neural.ops import NumpyOps, CupyOps
-from thinc.neural.util import get_array_module, copy_array
+from thinc.neural.util import get_array_module, copy_array, to_categorical
 from thinc.neural.optimizers import Adam
 
 from thinc import describe
@@ -840,6 +840,8 @@ def masked_language_model(vocab, model, mask_prob=0.15):
 
         def mlm_backward(d_output, sgd=None):
             d_output *= 1 - mask
+            # Rescale gradient for number of instances.
+            d_output *= mask.size - mask.sum()
             return backprop(d_output, sgd=sgd)
 
         return output, mlm_backward
@@ -944,7 +946,7 @@ class CharacterEmbed(Model):
         # for the tip.
         nCv = self.ops.xp.arange(self.nC)
         for doc in docs:
-            doc_ids = doc.to_utf8_array(nr_char=self.nC)
+            doc_ids = self.ops.asarray(doc.to_utf8_array(nr_char=self.nC))
             doc_vectors = self.ops.allocate((len(doc), self.nC, self.nM))
             # Let's say I have a 2d array of indices, and a 3d table of data. What numpy
             # incantation do I chant to get
@@ -986,3 +988,17 @@ def get_cossim_loss(yh, y, ignore_zeros=False):
         losses[zero_indices] = 0
     loss = losses.sum()
     return loss, -d_yh
+
+
+def get_characters_loss(ops, docs, prediction, nr_char=10):
+    target_ids = numpy.vstack([doc.to_utf8_array(nr_char=nr_char) for doc in docs])
+    target_ids = target_ids.reshape((-1,))
+    target = ops.asarray(to_categorical(target_ids, nb_classes=256), dtype="f")
+    target = target.reshape((-1, 256*nr_char))
+    diff = prediction - target
+    loss = (diff**2).sum()
+    d_target = diff / float(prediction.shape[0])
+    return loss, d_target
+
+
+

spacy/about.py

@@ -1,6 +1,6 @@
 # fmt: off
 __title__ = "spacy"
-__version__ = "2.3.1"
+__version__ = "2.3.2"
 __release__ = True
 __download_url__ = "https://github.com/explosion/spacy-models/releases/download"
 __compatibility__ = "https://raw.githubusercontent.com/explosion/spacy-models/master/compatibility.json"

spacy/cli/pretrain.py

@@ -18,7 +18,8 @@ from ..errors import Errors
 from ..tokens import Doc
 from ..attrs import ID, HEAD
 from .._ml import Tok2Vec, flatten, chain, create_default_optimizer
-from .._ml import masked_language_model, get_cossim_loss
+from .._ml import masked_language_model, get_cossim_loss, get_characters_loss
+from .._ml import MultiSoftmax
 from .. import util
 from .train import _load_pretrained_tok2vec
 
@@ -42,7 +43,7 @@ from .train import _load_pretrained_tok2vec
     bilstm_depth=("Depth of BiLSTM layers (requires PyTorch)", "option", "lstm", int),
     embed_rows=("Number of embedding rows", "option", "er", int),
     loss_func=(
-        "Loss function to use for the objective. Either 'L2' or 'cosine'",
+        "Loss function to use for the objective. Either 'characters', 'L2' or 'cosine'",
         "option",
         "L",
         str,
@@ -85,11 +86,11 @@ def pretrain(
     output_dir,
     width=96,
     conv_depth=4,
-    bilstm_depth=0,
     cnn_pieces=3,
     sa_depth=0,
-    use_chars=False,
     cnn_window=1,
+    bilstm_depth=0,
+    use_chars=False,
     embed_rows=2000,
     loss_func="cosine",
     use_vectors=False,
@@ -124,11 +125,7 @@ def pretrain(
             config[key] = str(config[key])
     util.fix_random_seed(seed)
 
-    has_gpu = prefer_gpu()
+    has_gpu = prefer_gpu(gpu_id=1)
-    if has_gpu:
-        import torch
-
-        torch.set_default_tensor_type("torch.cuda.FloatTensor")
     msg.info("Using GPU" if has_gpu else "Not using GPU")
 
     output_dir = Path(output_dir)
@@ -174,6 +171,7 @@ def pretrain(
             subword_features=not use_chars,  # Set to False for Chinese etc
             cnn_maxout_pieces=cnn_pieces,  # If set to 1, use Mish activation.
         ),
+        objective=loss_func
     )
     # Load in pretrained weights
     if init_tok2vec is not None:
@@ -264,6 +262,9 @@ def make_update(model, docs, optimizer, drop=0.0, objective="L2"):
     RETURNS loss: A float for the loss.
     """
     predictions, backprop = model.begin_update(docs, drop=drop)
+    if objective == "characters":
+        loss, gradients = get_characters_loss(model.ops, docs, predictions)
+    else:
         loss, gradients = get_vectors_loss(model.ops, docs, predictions, objective)
     backprop(gradients, sgd=optimizer)
     # Don't want to return a cupy object here
@@ -326,12 +327,19 @@ def get_vectors_loss(ops, docs, prediction, objective="L2"):
     return loss, d_target
 
 
-def create_pretraining_model(nlp, tok2vec):
+def create_pretraining_model(nlp, tok2vec, objective="cosine", nr_char=10):
     """Define a network for the pretraining. We simply add an output layer onto
     the tok2vec input model. The tok2vec input model needs to be a model that
     takes a batch of Doc objects (as a list), and returns a list of arrays.
     Each array in the output needs to have one row per token in the doc.
     """
+    if objective == "characters":
+        out_sizes = [256] * nr_char
+        output_layer = chain(
+            LN(Maxout(300, pieces=3)),
+            MultiSoftmax(out_sizes, 300)
+        )
+    else:
         output_size = nlp.vocab.vectors.data.shape[1]
         output_layer = chain(
             LN(Maxout(300, pieces=3)), Affine(output_size, drop_factor=0.0)

spacy/cli/train.py

@@ -285,7 +285,7 @@ def train(
 
     if base_model and not pipes_added:
         # Start with an existing model, use default optimizer
-        optimizer = create_default_optimizer(Model.ops)
+        optimizer = nlp.resume_training(device=use_gpu)
     else:
         # Start with a blank model, call begin_training
         cfg = {"device": use_gpu}
@@ -576,6 +576,8 @@ def train(
         with nlp.use_params(optimizer.averages):
             final_model_path = output_path / "model-final"
             nlp.to_disk(final_model_path)
+            srsly.write_json(final_model_path / "meta.json", meta)
+
             meta_loc = output_path / "model-final" / "meta.json"
             final_meta = srsly.read_json(meta_loc)
             final_meta.setdefault("accuracy", {})

spacy/lang/en/__init__.py

@@ -18,7 +18,26 @@ def _return_en(_):
     return "en"
 
 
-def en_is_base_form(univ_pos, morphology=None):
+class EnglishDefaults(Language.Defaults):
+    lex_attr_getters = dict(Language.Defaults.lex_attr_getters)
+    lex_attr_getters.update(LEX_ATTRS)
+    lex_attr_getters[LANG] = _return_en
+    tokenizer_exceptions = update_exc(BASE_EXCEPTIONS, TOKENIZER_EXCEPTIONS)
+    tag_map = TAG_MAP
+    stop_words = STOP_WORDS
+    morph_rules = MORPH_RULES
+    syntax_iterators = SYNTAX_ITERATORS
+    single_orth_variants = [
+        {"tags": ["NFP"], "variants": ["…", "..."]},
+        {"tags": [":"], "variants": ["-", "—", "–", "--", "---", "——"]},
+    ]
+    paired_orth_variants = [
+        {"tags": ["``", "''"], "variants": [("'", "'"), ("‘", "’")]},
+        {"tags": ["``", "''"], "variants": [('"', '"'), ("“", "”")]},
+    ]
+
+    @classmethod
+    def is_base_form(cls, univ_pos, morphology=None):
         """
         Check whether we're dealing with an uninflected paradigm, so we can
         avoid lemmatization entirely.
@@ -53,26 +72,6 @@ def en_is_base_form(univ_pos, morphology=None):
             return False
 
 
-class EnglishDefaults(Language.Defaults):
-    lex_attr_getters = dict(Language.Defaults.lex_attr_getters)
-    lex_attr_getters.update(LEX_ATTRS)
-    lex_attr_getters[LANG] = _return_en
-    tokenizer_exceptions = update_exc(BASE_EXCEPTIONS, TOKENIZER_EXCEPTIONS)
-    tag_map = TAG_MAP
-    stop_words = STOP_WORDS
-    morph_rules = MORPH_RULES
-    is_base_form = en_is_base_form
-    syntax_iterators = SYNTAX_ITERATORS
-    single_orth_variants = [
-        {"tags": ["NFP"], "variants": ["…", "..."]},
-        {"tags": [":"], "variants": ["-", "—", "–", "--", "---", "——"]},
-    ]
-    paired_orth_variants = [
-        {"tags": ["``", "''"], "variants": [("'", "'"), ("‘", "’")]},
-        {"tags": ["``", "''"], "variants": [('"', '"'), ("“", "”")]},
-    ]
-
-
 class English(Language):
     lang = "en"
     Defaults = EnglishDefaults

spacy/lang/fr/lemmatizer.py

@@ -45,9 +45,6 @@ class FrenchLemmatizer(Lemmatizer):
             univ_pos = "sconj"
         else:
             return [self.lookup(string)]
-        # See Issue #435 for example of where this logic is requied.
-        if self.is_base_form(univ_pos, morphology):
-            return list(set([string.lower()]))
         index_table = self.lookups.get_table("lemma_index", {})
         exc_table = self.lookups.get_table("lemma_exc", {})
         rules_table = self.lookups.get_table("lemma_rules", {})
@@ -59,43 +56,6 @@ class FrenchLemmatizer(Lemmatizer):
         )
         return lemmas
 
-    def is_base_form(self, univ_pos, morphology=None):
-        """
-        Check whether we're dealing with an uninflected paradigm, so we can
-        avoid lemmatization entirely.
-        """
-        morphology = {} if morphology is None else morphology
-        others = [
-            key
-            for key in morphology
-            if key not in (POS, "Number", "POS", "VerbForm", "Tense")
-        ]
-        if univ_pos == "noun" and morphology.get("Number") == "sing":
-            return True
-        elif univ_pos == "verb" and morphology.get("VerbForm") == "inf":
-            return True
-        # This maps 'VBP' to base form -- probably just need 'IS_BASE'
-        # morphology
-        elif univ_pos == "verb" and (
-            morphology.get("VerbForm") == "fin"
-            and morphology.get("Tense") == "pres"
-            and morphology.get("Number") is None
-            and not others
-        ):
-            return True
-        elif univ_pos == "adj" and morphology.get("Degree") == "pos":
-            return True
-        elif VerbForm_inf in morphology:
-            return True
-        elif VerbForm_none in morphology:
-            return True
-        elif Number_sing in morphology:
-            return True
-        elif Degree_pos in morphology:
-            return True
-        else:
-            return False
-
     def noun(self, string, morphology=None):
         return self(string, "noun", morphology)
 

spacy/lang/ko/__init__.py

@@ -42,7 +42,11 @@ def check_spaces(text, tokens):
 class KoreanTokenizer(DummyTokenizer):
     def __init__(self, cls, nlp=None):
         self.vocab = nlp.vocab if nlp is not None else cls.create_vocab(nlp)
-        self.Tokenizer = try_mecab_import()
+        MeCab = try_mecab_import()
+        self.mecab_tokenizer = MeCab("-F%f[0],%f[7]")
+
+    def __del__(self):
+        self.mecab_tokenizer.__del__()
 
     def __call__(self, text):
         dtokens = list(self.detailed_tokens(text))
@@ -58,8 +62,7 @@ class KoreanTokenizer(DummyTokenizer):
     def detailed_tokens(self, text):
         # 품사 태그(POS)[0], 의미 부류(semantic class)[1],	종성 유무(jongseong)[2], 읽기(reading)[3],
         # 타입(type)[4], 첫번째 품사(start pos)[5],	마지막 품사(end pos)[6], 표현(expression)[7], *
-        with self.Tokenizer("-F%f[0],%f[7]") as tokenizer:
+        for node in self.mecab_tokenizer.parse(text, as_nodes=True):
-            for node in tokenizer.parse(text, as_nodes=True):
             if node.is_eos():
                 break
             surface = node.surface

spacy/lemmatizer.py

@@ -21,7 +21,7 @@ class Lemmatizer(object):
     def load(cls, *args, **kwargs):
         raise NotImplementedError(Errors.E172)
 
-    def __init__(self, lookups, *args, is_base_form=None, **kwargs):
+    def __init__(self, lookups, is_base_form=None, *args, **kwargs):
         """Initialize a Lemmatizer.
 
         lookups (Lookups): The lookups object containing the (optional) tables

spacy/ml/_legacy_tok2vec.py

@@ -49,6 +49,14 @@ def Tok2Vec(width, embed_size, **kwargs):
                     >> LN(Maxout(width, width * 5, pieces=3)),
                     column=cols.index(ORTH),
                 )
+            elif char_embed:
+                embed = concatenate_lists(
+                    CharacterEmbed(nM=64, nC=8),
+                    FeatureExtracter(cols) >> with_flatten(glove),
+                )
+                reduce_dimensions = LN(
+                    Maxout(width, 64 * 8 + width, pieces=cnn_maxout_pieces)
+                )
             else:
                 embed = uniqued(
                     (glove | norm) >> LN(Maxout(width, width * 2, pieces=3)),
@@ -81,7 +89,8 @@ def Tok2Vec(width, embed_size, **kwargs):
             )
         else:
             tok2vec = FeatureExtracter(cols) >> with_flatten(
-                embed >> convolution ** conv_depth, pad=conv_depth
+                embed
+                >> convolution ** conv_depth, pad=conv_depth
             )
 
         if bilstm_depth >= 1:

spacy/pipeline/pipes.pyx

@@ -33,6 +33,7 @@ from .._ml import build_text_classifier, build_simple_cnn_text_classifier
 from .._ml import build_bow_text_classifier, build_nel_encoder
 from .._ml import link_vectors_to_models, zero_init, flatten
 from .._ml import masked_language_model, create_default_optimizer, get_cossim_loss
+from .._ml import MultiSoftmax, get_characters_loss
 from ..errors import Errors, TempErrors, Warnings
 from .. import util
 
@@ -846,6 +847,10 @@ class MultitaskObjective(Tagger):
 class ClozeMultitask(Pipe):
     @classmethod
     def Model(cls, vocab, tok2vec, **cfg):
+        if cfg["objective"] == "characters":
+            out_sizes = [256] * cfg.get("nr_char", 4)
+            output_layer = MultiSoftmax(out_sizes)
+        else:
             output_size = vocab.vectors.data.shape[1]
             output_layer = chain(
                 LayerNorm(Maxout(output_size, tok2vec.nO, pieces=3)),
@@ -861,6 +866,8 @@ class ClozeMultitask(Pipe):
         self.vocab = vocab
         self.model = model
         self.cfg = cfg
+        self.cfg.setdefault("objective", "characters")
+        self.cfg.setdefault("nr_char", 4)
 
     def set_annotations(self, docs, dep_ids, tensors=None):
         pass
@@ -869,7 +876,8 @@ class ClozeMultitask(Pipe):
                         tok2vec=None, sgd=None, **kwargs):
         link_vectors_to_models(self.vocab)
         if self.model is True:
-            self.model = self.Model(self.vocab, tok2vec)
+            kwargs.update(self.cfg)
+            self.model = self.Model(self.vocab, tok2vec, **kwargs)
         X = self.model.ops.allocate((5, self.model.tok2vec.nO))
         self.model.output_layer.begin_training(X)
         if sgd is None:
@@ -883,6 +891,9 @@ class ClozeMultitask(Pipe):
         return tokvecs, vectors
 
     def get_loss(self, docs, vectors, prediction):
+        if self.cfg["objective"] == "characters":
+            loss, gradient = get_characters_loss(self.model.ops, docs, prediction)
+        else:
             # The simplest way to implement this would be to vstack the
             # token.vector values, but that's a bit inefficient, especially on GPU.
             # Instead we fetch the index into the vectors table for each of our tokens,
@@ -906,6 +917,20 @@ class ClozeMultitask(Pipe):
         if losses is not None:
             losses[self.name] += loss
 
+    @staticmethod
+    def decode_utf8_predictions(char_array):
+        # The format alternates filling from start and end, and 255 is missing
+        words = []
+        char_array = char_array.reshape((char_array.shape[0], -1, 256))
+        nr_char = char_array.shape[1]
+        char_array = char_array.argmax(axis=-1)
+        for row in char_array:
+            starts = [chr(c) for c in row[::2] if c != 255]
+            ends = [chr(c) for c in row[1::2] if c != 255]
+            word = "".join(starts + list(reversed(ends)))
+            words.append(word)
+        return words
+
 
 @component("textcat", assigns=["doc.cats"])
 class TextCategorizer(Pipe):
@@ -1069,6 +1094,7 @@ cdef class DependencyParser(Parser):
     assigns = ["token.dep", "token.is_sent_start", "doc.sents"]
     requires = []
     TransitionSystem = ArcEager
+    nr_feature = 8
 
     @property
     def postprocesses(self):

spacy/tests/regression/test_issue2501-3000.py

@@ -59,7 +59,7 @@ def test_issue2626_2835(en_tokenizer, text):
 
 
 def test_issue2656(en_tokenizer):
-    """Test that tokenizer correctly splits of punctuation after numbers with
+    """Test that tokenizer correctly splits off punctuation after numbers with
     decimal points.
     """
     doc = en_tokenizer("I went for 40.3, and got home by 10.0.")

spacy/tests/regression/test_issue3001-3500.py

@@ -121,6 +121,7 @@ def test_issue3248_1():
     assert len(matcher) == 2
 
 
+@pytest.mark.skipif(is_python2, reason="Can't pickle instancemethod for is_base_form")
 def test_issue3248_2():
     """Test that the PhraseMatcher can be pickled correctly."""
     nlp = English()

website/docs/api/cli.md

@@ -473,7 +473,7 @@ $ python -m spacy pretrain [texts_loc] [vectors_model] [output_dir]
 | `--use-chars`, `-chr` <Tag variant="new">2.2.2</Tag>  | flag       | Whether to use character-based embedding.                                                                                                                                       |
 | `--sa-depth`, `-sa` <Tag variant="new">2.2.2</Tag>    | option     | Depth of self-attention layers.                                                                                                                                                 |
 | `--embed-rows`, `-er`                                 | option     | Number of embedding rows.                                                                                                                                                       |
-| `--loss-func`, `-L`                                   | option     | Loss function to use for the objective. Either `"L2"` or `"cosine"`.                                                                                                            |
+| `--loss-func`, `-L`                                   | option     | Loss function to use for the objective. Either `"cosine"`, `"L2"` or `"characters"`.                                                                                                            |
 | `--dropout`, `-d`                                     | option     | Dropout rate.                                                                                                                                                                   |
 | `--batch-size`, `-bs`                                 | option     | Number of words per training batch.                                                                                                                                             |
 | `--max-length`, `-xw`                                 | option     | Maximum words per example. Longer examples are discarded.                                                                                                                       |

website/meta/universe.json

@@ -1,5 +1,58 @@
 {
     "resources": [
+        {
+            "id": "spacy-streamlit",
+            "title": "spacy-streamlit",
+            "slogan": "spaCy building blocks for Streamlit apps",
+            "github": "explosion/spacy-streamlit",
+            "description": "This package contains utilities for visualizing spaCy models and building interactive spaCy-powered apps with [Streamlit](https://streamlit.io). It includes various building blocks you can use in your own Streamlit app, like visualizers for **syntactic dependencies**, **named entities**, **text classification**, **semantic similarity** via word vectors, token attributes, and more.",
+            "pip": "spacy-streamlit",
+            "category": ["visualizers"],
+            "thumb": "https://i.imgur.com/mhEjluE.jpg",
+            "image": "https://user-images.githubusercontent.com/13643239/85388081-f2da8700-b545-11ea-9bd4-e303d3c5763c.png",
+            "code_example": [
+                "import spacy_streamlit",
+                "",
+                "models = [\"en_core_web_sm\", \"en_core_web_md\"]",
+                "default_text = \"Sundar Pichai is the CEO of Google.\"",
+                "spacy_streamlit.visualize(models, default_text))"
+            ],
+            "author": "Ines Montani",
+            "author_links": {
+                "twitter": "_inesmontani",
+                "github": "ines",
+                "website": "https://ines.io"
+            }
+        },
+        {
+            "id": "spaczz",
+            "title": "spaczz",
+            "slogan": "Fuzzy matching and more for spaCy.",
+            "description": "Spaczz provides fuzzy matching and multi-token regex matching functionality for spaCy. Spaczz's components have similar APIs to their spaCy counterparts and spaczz pipeline components can integrate into spaCy pipelines where they can be saved/loaded as models.",
+            "github": "gandersen101/spaczz",
+            "pip": "spaczz",
+            "code_example": [
+                "import spacy",
+                "from spaczz.pipeline import SpaczzRuler",
+                "",
+                "nlp = spacy.blank('en')",
+                "ruler = SpaczzRuler(nlp)",
+                "ruler.add_patterns([{'label': 'PERSON', 'pattern': 'Bill Gates', 'type': 'fuzzy'}])",
+                "nlp.add_pipe(ruler)",
+                "",
+                "doc = nlp('Oops, I spelled Bill Gatez wrong.')",
+                "print([(ent.text, ent.start, ent.end, ent.label_) for ent in doc.ents])"
+            ],
+            "code_language": "python",
+            "url": "https://spaczz.readthedocs.io/en/latest/",
+            "author": "Grant Andersen",
+            "author_links": {
+                "twitter": "gandersen101",
+                "github": "gandersen101"
+            },
+            "category": ["pipeline"],
+            "tags": ["fuzzy-matching", "regex"]
+        },
         {
             "id": "spacy-universal-sentence-encoder",
             "title": "SpaCy - Universal Sentence Encoder",
@@ -1237,6 +1290,19 @@
             "youtube": "K1elwpgDdls",
             "category": ["videos"]
         },
+        {
+            "type": "education",
+            "id": "video-spacy-course-es",
+            "title": "NLP avanzado con spaCy · Un curso en línea gratis",
+            "description": "spaCy es un paquete moderno de Python para hacer Procesamiento de Lenguaje Natural de potencia industrial. En este curso en línea, interactivo y gratuito, aprenderás a usar spaCy para construir sistemas avanzados de comprensión de lenguaje natural usando enfoques basados en reglas y en machine learning.",
+            "url": "https://course.spacy.io/es",
+            "author": "Camila Gutiérrez",
+            "author_links": {
+                "twitter": "Mariacamilagl30"
+            },
+            "youtube": "RNiLVCE5d4k",
+            "category": ["videos"]
+        },
         {
             "type": "education",
             "id": "video-intro-to-nlp-episode-1",
@@ -1293,6 +1359,20 @@
             "youtube": "IqOJU1-_Fi0",
             "category": ["videos"]
         },
+        {
+            "type": "education",
+            "id": "video-intro-to-nlp-episode-5",
+            "title": "Intro to NLP with spaCy (5)",
+            "slogan": "Episode 5: Rules vs. Machine Learning",
+            "description": "In this new video series, data science instructor Vincent Warmerdam gets started with spaCy, an open-source library for Natural Language Processing in Python. His mission: building a system to automatically detect programming languages in large volumes of text. Follow his process from the first idea to a prototype all the way to data collection and training a statistical named entity recogntion model from scratch.",
+            "author": "Vincent Warmerdam",
+            "author_links": {
+                "twitter": "fishnets88",
+                "github": "koaning"
+            },
+            "youtube": "f4sqeLRzkPg",
+            "category": ["videos"]
+        },
         {
             "type": "education",
             "id": "video-spacy-irl-entity-linking",
@@ -2347,6 +2427,32 @@
             },
             "category": ["pipeline", "conversational", "research"],
             "tags": ["spell check", "correction", "preprocessing", "translation", "correction"]
+        },
+        {
+            "id": "texthero",
+            "title": "Texthero",
+            "slogan": "Text preprocessing, representation and visualization from zero to hero.",
+            "description": "Texthero is a python package to work with text data efficiently. It empowers NLP developers with a tool to quickly understand any text-based dataset and it provides a solid pipeline to clean and represent text data, from zero to hero.",
+            "github": "jbesomi/texthero",
+            "pip": "texthero",
+            "code_example": [
+                "import texthero as hero",
+                "import pandas as pd",
+                "",
+                "df = pd.read_csv('https://github.com/jbesomi/texthero/raw/master/dataset/bbcsport.csv')",
+                "df['named_entities'] = hero.named_entities(df['text'])",
+                "df.head()"
+            ],
+            "code_language": "python",
+            "url": "https://texthero.org",
+            "thumb": "https://texthero.org/img/T.png",
+            "image": "https://texthero.org/docs/assets/texthero.png",
+            "author": "Jonathan Besomi",
+            "author_links": {
+                "github": "jbesomi",
+                "website": "https://besomi.ai"
+            },
+            "category": ["standalone"]
         }
     ],