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450 lines
12 KiB
Plaintext
450 lines
12 KiB
Plaintext
//- 💫 DOCS > API > PIPE
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include ../_includes/_mixins
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//- This page can be used as a template for all other classes that inherit
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//- from `Pipe`.
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if subclass
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+infobox
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| This class is a subclass of #[+api("pipe") #[code Pipe]] and
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| follows the same API. The pipeline component is available in the
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| #[+a("/usage/processing-pipelines") processing pipeline] via the ID
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| #[code "#{pipeline_id}"].
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else
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p
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| This class is not instantiated directly. Components inherit from it,
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| and it defines the interface that components should follow to
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| function as components in a spaCy analysis pipeline.
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- CLASSNAME = subclass || 'Pipe'
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- VARNAME = short || CLASSNAME.toLowerCase()
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+h(2, "model") #{CLASSNAME}.Model
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+tag classmethod
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p
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| Initialise a model for the pipe. The model should implement the
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| #[code thinc.neural.Model] API. Wrappers are under development for
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| most major machine learning libraries.
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code **kwargs]
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+cell -
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+cell Parameters for initialising the model
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+row("foot")
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+cell returns
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+cell object
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+cell The initialised model.
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+h(2, "init") #{CLASSNAME}.__init__
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+tag method
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p Create a new pipeline instance.
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+aside-code("Example").
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from spacy.pipeline import #{CLASSNAME}
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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#{VARNAME}.from_disk('/path/to/model')
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code vocab]
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+cell #[code Vocab]
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+cell The shared vocabulary.
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+row
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+cell #[code model]
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+cell #[code thinc.neural.Model] or #[code True]
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+cell
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| The model powering the pipeline component. If no model is
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| supplied, the model is created when you call
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| #[code begin_training], #[code from_disk] or #[code from_bytes].
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+row
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+cell #[code **cfg]
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+cell -
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+cell Configuration parameters.
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+row("foot")
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+cell returns
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+cell #[code=CLASSNAME]
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+cell The newly constructed object.
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+h(2, "call") #{CLASSNAME}.__call__
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+tag method
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p
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| Apply the pipe to one document. The document is modified in place, and
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| returned. Both #[code #{CLASSNAME}.__call__] and
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| #[code #{CLASSNAME}.pipe] should delegate to the
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| #[code #{CLASSNAME}.predict] and #[code #{CLASSNAME}.set_annotations]
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| methods.
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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doc = nlp(u"This is a sentence.")
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processed = #{VARNAME}(doc)
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code doc]
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+cell #[code Doc]
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+cell The document to process.
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+row("foot")
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+cell returns
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+cell #[code Doc]
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+cell The processed document.
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+h(2, "pipe") #{CLASSNAME}.pipe
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+tag method
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p
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| Apply the pipe to a stream of documents. Both
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| #[code #{CLASSNAME}.__call__] and #[code #{CLASSNAME}.pipe] should
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| delegate to the #[code #{CLASSNAME}.predict] and
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| #[code #{CLASSNAME}.set_annotations] methods.
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+aside-code("Example").
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texts = [u'One doc', u'...', u'Lots of docs']
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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for doc in #{VARNAME}.pipe(texts, batch_size=50):
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pass
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code stream]
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+cell iterable
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+cell A stream of documents.
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+row
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+cell #[code batch_size]
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+cell int
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+cell The number of texts to buffer. Defaults to #[code 128].
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+row
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+cell #[code n_threads]
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+cell int
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+cell
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| The number of worker threads to use. If #[code -1], OpenMP will
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| decide how many to use at run time. Default is #[code -1].
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+row("foot")
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+cell yields
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+cell #[code Doc]
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+cell Processed documents in the order of the original text.
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+h(2, "predict") #{CLASSNAME}.predict
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+tag method
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p
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| Apply the pipeline's model to a batch of docs, without modifying them.
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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scores = #{VARNAME}.predict([doc1, doc2])
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code docs]
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+cell iterable
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+cell The documents to predict.
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+row("foot")
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+cell returns
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+cell -
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+cell Scores from the model.
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+h(2, "set_annotations") #{CLASSNAME}.set_annotations
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+tag method
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p
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| Modify a batch of documents, using pre-computed scores.
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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scores = #{VARNAME}.predict([doc1, doc2])
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#{VARNAME}.set_annotations([doc1, doc2], scores)
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code docs]
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+cell iterable
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+cell The documents to modify.
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+row
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+cell #[code scores]
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+cell -
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+cell The scores to set, produced by #[code #{CLASSNAME}.predict].
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+h(2, "update") #{CLASSNAME}.update
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+tag method
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p
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| Learn from a batch of documents and gold-standard information, updating
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| the pipe's model. Delegates to #[code #{CLASSNAME}.predict] and
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| #[code #{CLASSNAME}.get_loss].
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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losses = {}
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optimizer = nlp.begin_training()
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#{VARNAME}.update([doc1, doc2], [gold1, gold2], losses=losses, sgd=optimizer)
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code docs]
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+cell iterable
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+cell A batch of documents to learn from.
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+row
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+cell #[code golds]
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+cell iterable
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+cell The gold-standard data. Must have the same length as #[code docs].
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+row
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+cell #[code drop]
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+cell float
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+cell The dropout rate.
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+row
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+cell #[code sgd]
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+cell callable
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+cell
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| The optimizer. Should take two arguments #[code weights] and
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| #[code gradient], and an optional ID.
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+row
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+cell #[code losses]
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+cell dict
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+cell
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| Optional record of the loss during training. The value keyed by
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| the model's name is updated.
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+h(2, "get_loss") #{CLASSNAME}.get_loss
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+tag method
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p
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| Find the loss and gradient of loss for the batch of documents and their
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| predicted scores.
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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scores = #{VARNAME}.predict([doc1, doc2])
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loss, d_loss = #{VARNAME}.get_loss([doc1, doc2], [gold1, gold2], scores)
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code docs]
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+cell iterable
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+cell The batch of documents.
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+row
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+cell #[code golds]
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+cell iterable
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+cell The gold-standard data. Must have the same length as #[code docs].
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+row
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+cell #[code scores]
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+cell -
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+cell Scores representing the model's predictions.
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+row("foot")
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+cell returns
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+cell tuple
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+cell The loss and the gradient, i.e. #[code (loss, gradient)].
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+h(2, "begin_training") #{CLASSNAME}.begin_training
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+tag method
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p
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| Initialise the pipe for training, using data exampes if available. If no
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| model has been initialised yet, the model is added.
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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nlp.pipeline.append(#{VARNAME})
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optimizer = #{VARNAME}.begin_training(pipeline=nlp.pipeline)
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code gold_tuples]
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+cell iterable
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+cell
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| Optional gold-standard annotations from which to construct
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| #[+api("goldparse") #[code GoldParse]] objects.
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+row
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+cell #[code pipeline]
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+cell list
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+cell
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| Optional list of #[+api("pipe") #[code Pipe]] components that
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| this component is part of.
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+row
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+cell #[code sgd]
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+cell callable
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+cell
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| An optional optimizer. Should take two arguments #[code weights]
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| and #[code gradient], and an optional ID. Will be created via
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| #[+api(CLASSNAME.toLowerCase() + "#create_optimizer") #[code create_optimizer]]
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| if not set.
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+row("foot")
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+cell returns
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+cell callable
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+cell An optimizer.
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+h(2, "create_optimizer") #{CLASSNAME}.create_optimizer
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+tag method
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p
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| Create an optmizer for the pipeline component.
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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optimizer = #{VARNAME}.create_optimizer()
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+table(["Name", "Type", "Description"])
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+row("foot")
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+cell returns
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+cell callable
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+cell The optimizer.
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+h(2, "use_params") #{CLASSNAME}.use_params
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+tag method
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+tag contextmanager
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p Modify the pipe's model, to use the given parameter values.
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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with #{VARNAME}.use_params():
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#{VARNAME}.to_disk('/best_model')
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code params]
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+cell -
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+cell
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| The parameter values to use in the model. At the end of the
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| context, the original parameters are restored.
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+h(2, "add_label") #{CLASSNAME}.add_label
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+tag method
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p Add a new label to the pipe.
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if CLASSNAME == "Tagger"
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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#{VARNAME}.add_label('MY_LABEL', {POS: 'NOUN'})
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else
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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#{VARNAME}.add_label('MY_LABEL')
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code label]
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+cell unicode
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+cell The label to add.
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if CLASSNAME == "Tagger"
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+row
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+cell #[code values]
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+cell dict
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+cell
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| Optional values to map to the label, e.g. a tag map
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| dictionary.
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+h(2, "to_disk") #{CLASSNAME}.to_disk
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+tag method
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p Serialize the pipe to disk.
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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#{VARNAME}.to_disk('/path/to/#{VARNAME}')
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code path]
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+cell unicode or #[code Path]
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+cell
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| A path to a directory, which will be created if it doesn't exist.
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| Paths may be either strings or #[code Path]-like objects.
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+h(2, "from_disk") #{CLASSNAME}.from_disk
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+tag method
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p Load the pipe from disk. Modifies the object in place and returns it.
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+aside-code("Example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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#{VARNAME}.from_disk('/path/to/#{VARNAME}')
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code path]
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+cell unicode or #[code Path]
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+cell
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| A path to a directory. Paths may be either strings or
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| #[code Path]-like objects.
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+row("foot")
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+cell returns
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+cell #[code=CLASSNAME]
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+cell The modified #[code=CLASSNAME] object.
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+h(2, "to_bytes") #{CLASSNAME}.to_bytes
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+tag method
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+aside-code("example").
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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#{VARNAME}_bytes = #{VARNAME}.to_bytes()
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p Serialize the pipe to a bytestring.
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code **exclude]
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+cell -
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+cell Named attributes to prevent from being serialized.
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+row("foot")
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+cell returns
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+cell bytes
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+cell The serialized form of the #[code=CLASSNAME] object.
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+h(2, "from_bytes") #{CLASSNAME}.from_bytes
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+tag method
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p Load the pipe from a bytestring. Modifies the object in place and returns it.
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+aside-code("Example").
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#{VARNAME}_bytes = #{VARNAME}.to_bytes()
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#{VARNAME} = #{CLASSNAME}(nlp.vocab)
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#{VARNAME}.from_bytes(#{VARNAME}_bytes)
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+table(["Name", "Type", "Description"])
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+row
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+cell #[code bytes_data]
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+cell bytes
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+cell The data to load from.
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+row
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+cell #[code **exclude]
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+cell -
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+cell Named attributes to prevent from being loaded.
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+row("foot")
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+cell returns
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+cell #[code=CLASSNAME]
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+cell The #[code=CLASSNAME] object.
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