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103 lines
4.1 KiB
Plaintext
103 lines
4.1 KiB
Plaintext
//- 💫 DOCS > MODELS
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include ../_includes/_mixins
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+section("quickstart")
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p
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| spaCy v2.0 features new neural models for #[strong tagging],
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| #[strong parsing] and #[strong entity recognition]. The models have
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| been designed and implemented from scratch specifically for spaCy, to
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| give you an unmatched balance of speed, size and accuracy. A novel
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| bloom embedding strategy with subword features is used to support
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| huge vocabularies in tiny tables. Convolutional layers with residual
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| connections, layer normalization and maxout non-linearity are used,
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| giving much better efficiency than the standard BiLSTM solution. For
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| more details, see the notes on the
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| #[+a("/api/#nn-models") model architecture].
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p
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| The parser and NER use an imitation learning objective to
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| deliver #[strong accuracy in-line with the latest research systems],
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| even when evaluated from raw text. With these innovations, spaCy
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| v2.0's models are #[strong 10× smaller],
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| #[strong 20% more accurate], and #[strong even cheaper to run] than
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| the previous generation.
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include ../usage/_models/_quickstart
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+section("install")
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+h(2, "install") Installation & Usage
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include ../usage/_models/_install-basics
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+infobox
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| For more details on how to use models with spaCy, see the
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| #[+a("/usage/models") usage guide on models].
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+h(3, "available-models") Available models
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include ../usage/_models/_available-models
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+section("conventions")
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+h(2, "model-naming") Model naming conventions
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p
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| In general, spaCy expects all model packages to follow the naming
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| convention of #[code [lang]_[name]]. For spaCy's models, we also
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| chose to divide the name into three components:
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+table
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+row
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+cell #[+label Type]
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+cell
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| Model capabilities (e.g. #[code core] for general-purpose
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| model with vocabulary, syntax, entities and word vectors, or
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| #[code depent] for only vocab, syntax and entities).
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+row
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+cell #[+label Genre]
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+cell
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| Type of text the model is trained on, e.g. #[code web] or
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| #[code news].
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+row
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+cell #[+label Size]
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+cell Model size indicator, #[code sm], #[code md] or #[code lg].
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p
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| For example, #[code en_core_web_sm] is a small English model trained
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| on written web text (blogs, news, comments), that includes
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| vocabulary, vectors, syntax and entities.
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+h(3, "model-versioning") Model versioning
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p
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| Additionally, the model versioning reflects both the compatibility
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| with spaCy, as well as the major and minor model version. A model
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| version #[code a.b.c] translates to:
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+table
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+row
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+cell #[code a]
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+cell
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| #[strong spaCy major version]. For example, #[code 2] for
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| spaCy v2.x.
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+row
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+cell #[code b]
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+cell
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| #[strong Model major version]. Models with a different major
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| version can't be loaded by the same code. For example,
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| changing the width of the model, adding hidden layers or
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| changing the activation changes the model major version.
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+row
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+cell #[code c]
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+cell
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| #[strong Model minor version]. Same model structure, but
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| different parameter values, e.g. from being trained on
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| different data, for different numbers of iterations, etc.
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p
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| For a detailed compatibility overview, see the
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| #[+src(gh("spacy-models", "compatibility.json")) #[code compatibility.json]]
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| in the models repository. This is also the source of spaCy's internal
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| compatibility check, performed when you run the
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| #[+api("cli#download") #[code download]] command.
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