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https://github.com/explosion/spaCy.git
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Add spacy.TextCatParametricAttention.v1 (#13201)
* Add spacy.TextCatParametricAttention.v1 This layer provides is a simplification of the ensemble classifier that only uses paramteric attention. We have found empirically that with a sufficient amount of training data, using the ensemble classifier with BoW does not provide significant improvement in classifier accuracy. However, plugging in a BoW classifier does reduce GPU training and inference performance substantially, since it uses a GPU-only kernel. * Fix merge fallout
This commit is contained in:
Daniël de Kok
GitHub
parent
7ebba86402
commit
e2a3952de5
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@ -5,7 +5,7 @@ requires = [
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"cymem>=2.0.2,<2.1.0",
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"preshed>=3.0.2,<3.1.0",
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"murmurhash>=0.28.0,<1.1.0",
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"thinc>=8.1.8,<8.3.0",
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"thinc>=8.2.2,<8.3.0",
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"numpy>=1.15.0; python_version < '3.9'",
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"numpy>=1.25.0; python_version >= '3.9'",
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]
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@ -3,7 +3,7 @@ spacy-legacy>=3.0.11,<3.1.0
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spacy-loggers>=1.0.0,<2.0.0
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cymem>=2.0.2,<2.1.0
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preshed>=3.0.2,<3.1.0
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thinc>=8.1.8,<8.3.0
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thinc>=8.2.2,<8.3.0
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ml_datasets>=0.2.0,<0.3.0
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murmurhash>=0.28.0,<1.1.0
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wasabi>=0.9.1,<1.2.0
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@ -41,7 +41,7 @@ setup_requires =
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cymem>=2.0.2,<2.1.0
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preshed>=3.0.2,<3.1.0
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murmurhash>=0.28.0,<1.1.0
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thinc>=8.1.8,<8.3.0
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thinc>=8.2.2,<8.3.0
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install_requires =
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# Our libraries
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spacy-legacy>=3.0.11,<3.1.0
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@ -49,7 +49,7 @@ install_requires =
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murmurhash>=0.28.0,<1.1.0
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cymem>=2.0.2,<2.1.0
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preshed>=3.0.2,<3.1.0
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thinc>=8.1.8,<8.3.0
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thinc>=8.2.2,<8.3.0
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wasabi>=0.9.1,<1.2.0
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srsly>=2.4.3,<3.0.0
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catalogue>=2.0.6,<2.1.0
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@ -3,12 +3,14 @@ from typing import List, Optional, Tuple, cast
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from thinc.api import (
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Dropout,
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Gelu,
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LayerNorm,
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Linear,
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Logistic,
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Maxout,
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Model,
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ParametricAttention,
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ParametricAttention_v2,
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Relu,
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Softmax,
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SparseLinear,
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@ -146,6 +148,9 @@ def build_text_classifier_v2(
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linear_model: Model[List[Doc], Floats2d],
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nO: Optional[int] = None,
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) -> Model[List[Doc], Floats2d]:
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# TODO: build the model with _build_parametric_attention_with_residual_nonlinear
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# in spaCy v4. We don't do this in spaCy v3 to preserve model
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# compatibility.
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exclusive_classes = not linear_model.attrs["multi_label"]
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with Model.define_operators({">>": chain, "|": concatenate}):
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width = tok2vec.maybe_get_dim("nO")
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@ -211,6 +216,71 @@ def build_text_classifier_lowdata(
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return model
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@registry.architectures("spacy.TextCatParametricAttention.v1")
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def build_textcat_parametric_attention_v1(
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tok2vec: Model[List[Doc], List[Floats2d]],
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exclusive_classes: bool,
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nO: Optional[int] = None,
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) -> Model[List[Doc], Floats2d]:
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width = tok2vec.maybe_get_dim("nO")
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parametric_attention = _build_parametric_attention_with_residual_nonlinear(
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tok2vec=tok2vec,
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nonlinear_layer=Maxout(nI=width, nO=width),
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key_transform=Gelu(nI=width, nO=width),
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)
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with Model.define_operators({">>": chain}):
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if exclusive_classes:
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output_layer = Softmax(nO=nO)
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else:
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output_layer = Linear(nO=nO) >> Logistic()
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model = parametric_attention >> output_layer
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if model.has_dim("nO") is not False and nO is not None:
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model.set_dim("nO", cast(int, nO))
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model.set_ref("output_layer", output_layer)
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model.attrs["multi_label"] = not exclusive_classes
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return model
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def _build_parametric_attention_with_residual_nonlinear(
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*,
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tok2vec: Model[List[Doc], List[Floats2d]],
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nonlinear_layer: Model[Floats2d, Floats2d],
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key_transform: Optional[Model[Floats2d, Floats2d]] = None,
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) -> Model[List[Doc], Floats2d]:
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with Model.define_operators({">>": chain, "|": concatenate}):
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width = tok2vec.maybe_get_dim("nO")
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attention_layer = ParametricAttention_v2(nO=width, key_transform=key_transform)
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norm_layer = LayerNorm(nI=width)
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parametric_attention = (
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tok2vec
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>> list2ragged()
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>> attention_layer
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>> reduce_sum()
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>> residual(nonlinear_layer >> norm_layer >> Dropout(0.0))
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)
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parametric_attention.init = _init_parametric_attention_with_residual_nonlinear
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parametric_attention.set_ref("tok2vec", tok2vec)
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parametric_attention.set_ref("attention_layer", attention_layer)
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parametric_attention.set_ref("nonlinear_layer", nonlinear_layer)
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parametric_attention.set_ref("norm_layer", norm_layer)
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return parametric_attention
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def _init_parametric_attention_with_residual_nonlinear(model, X, Y) -> Model:
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tok2vec_width = get_tok2vec_width(model)
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model.get_ref("attention_layer").set_dim("nO", tok2vec_width)
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model.get_ref("nonlinear_layer").set_dim("nO", tok2vec_width)
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model.get_ref("nonlinear_layer").set_dim("nI", tok2vec_width)
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model.get_ref("norm_layer").set_dim("nI", tok2vec_width)
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model.get_ref("norm_layer").set_dim("nO", tok2vec_width)
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init_chain(model, X, Y)
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return model
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@registry.architectures("spacy.TextCatReduce.v1")
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def build_reduce_text_classifier(
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tok2vec: Model,
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@ -704,6 +704,9 @@ def test_overfitting_IO_multi():
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# CNN V2 (legacy)
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("textcat", TRAIN_DATA_SINGLE_LABEL, {"@architectures": "spacy.TextCatCNN.v2", "tok2vec": DEFAULT_TOK2VEC_MODEL, "exclusive_classes": True}),
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("textcat_multilabel", TRAIN_DATA_MULTI_LABEL, {"@architectures": "spacy.TextCatCNN.v2", "tok2vec": DEFAULT_TOK2VEC_MODEL, "exclusive_classes": False}),
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# PARAMETRIC ATTENTION V1
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("textcat", TRAIN_DATA_SINGLE_LABEL, {"@architectures": "spacy.TextCatParametricAttention.v1", "tok2vec": DEFAULT_TOK2VEC_MODEL, "exclusive_classes": True}),
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("textcat_multilabel", TRAIN_DATA_MULTI_LABEL, {"@architectures": "spacy.TextCatParametricAttention.v1", "tok2vec": DEFAULT_TOK2VEC_MODEL, "exclusive_classes": False}),
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# REDUCE V1
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("textcat", TRAIN_DATA_SINGLE_LABEL, {"@architectures": "spacy.TextCatReduce.v1", "tok2vec": DEFAULT_TOK2VEC_MODEL, "exclusive_classes": True, "use_reduce_first": True, "use_reduce_last": True, "use_reduce_max": True, "use_reduce_mean": True}),
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("textcat_multilabel", TRAIN_DATA_MULTI_LABEL, {"@architectures": "spacy.TextCatReduce.v1", "tok2vec": DEFAULT_TOK2VEC_MODEL, "exclusive_classes": False, "use_reduce_first": True, "use_reduce_last": True, "use_reduce_max": True, "use_reduce_mean": True}),
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@ -1056,6 +1056,44 @@ the others, but may not be as accurate, especially if texts are short.
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</Accordion>
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### spacy.TextCatParametricAttention.v1 {id="TextCatParametricAttention"}
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> #### Example Config
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>
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> ```ini
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> [model]
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> @architectures = "spacy.TextCatParametricAttention.v1"
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> exclusive_classes = true
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> nO = null
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>
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> [model.tok2vec]
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> @architectures = "spacy.Tok2Vec.v2"
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>
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> [model.tok2vec.embed]
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> @architectures = "spacy.MultiHashEmbed.v2"
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> width = 64
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> rows = [2000, 2000, 1000, 1000, 1000, 1000]
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> attrs = ["ORTH", "LOWER", "PREFIX", "SUFFIX", "SHAPE", "ID"]
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> include_static_vectors = false
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>
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> [model.tok2vec.encode]
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> @architectures = "spacy.MaxoutWindowEncoder.v2"
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> width = ${model.tok2vec.embed.width}
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> window_size = 1
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> maxout_pieces = 3
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> depth = 2
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> ```
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A neural network model that is built upon Tok2Vec and uses parametric attention
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to attend to tokens that are relevant to text classification.
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| Name | Description |
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| ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| `tok2vec` | The `tok2vec` layer to build the neural network upon. ~~Model[List[Doc], List[Floats2d]]~~ |
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| `exclusive_classes` | Whether or not categories are mutually exclusive. ~~bool~~ |
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| `nO` | Output dimension, determined by the number of different labels. If not set, the [`TextCategorizer`](/api/textcategorizer) component will set it when `initialize` is called. ~~Optional[int]~~ |
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| **CREATES** | The model using the architecture. ~~Model[List[Doc], Floats2d]~~ |
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### spacy.TextCatReduce.v1 {id="TextCatReduce"}
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> #### Example Config
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