spaCy/website/docs/api/scorer.md

title	teaser	tag	source
Scorer	Compute evaluation scores	class	spacy/scorer.py

The Scorer computes and stores evaluation scores. It's typically created by Language.evaluate.

Scorer.__init__

Create a new Scorer.

Example

from spacy.scorer import Scorer

scorer = Scorer()

Name	Type	Description
eval_punct	bool	Evaluate the dependency attachments to and from punctuation.
RETURNS	Scorer	The newly created object.

Scorer.score

Update the evaluation scores from a single Example object.

Example

scorer = Scorer()
scorer.score(example)

Name	Type	Description
example	Example	The Example object holding both the predictions and the correct gold-standard annotations.
verbose	bool	Print debugging information.
punct_labels	tuple	Dependency labels for punctuation. Used to evaluate dependency attachments to punctuation if eval_punct is True.

Properties

Name	Type	Description
token_acc	float	Tokenization accuracy.
tags_acc	float	Part-of-speech tag accuracy (fine grained tags, i.e. Token.tag).
uas	float	Unlabelled dependency score.
las	float	Labelled dependency score.
ents_p	float	Named entity accuracy (precision).
ents_r	float	Named entity accuracy (recall).
ents_f	float	Named entity accuracy (F-score).
ents_per_type 2.1.5	dict	Scores per entity label. Keyed by label, mapped to a dict of p, r and f scores.
textcat_f 3.0	float	F-score on positive label for binary classification, macro-averaged F-score otherwise.
textcat_auc 3.0	float	Macro-averaged AUC ROC score for multilabel classification (-1 if undefined).
textcats_f_per_cat 3.0	dict	F-scores per textcat label, keyed by label.
textcats_auc_per_cat 3.0	dict	ROC AUC scores per textcat label, keyed by label.
las_per_type 2.2.3	dict	Labelled dependency scores, keyed by label.
scores	dict	All scores, keyed by type.