如何在 Spacy 中向匹配器添加多个模式

Question

I want to know how can I add different patterns to the matcher. What I want is to do something like this

matcher.add("COUNTRIES",None,*patterncountry)
matcher.add("ZONES",None,*patternzones)
matcher.add("DAYS",None,patterndays)

So now I have 3 patterns. How can this be achive?

Answer 1

In SpaCy, the the Matcher lets you match sequences based on lists of token descriptions while the PhraseMatcher lets you efficiently match large terminology lists. In your case the PhraseMatcher would be more appropriate to use.

import spacy
from spacy.matcher import PhraseMatcher

nlp = spacy.load("en_core_web_sm")
phrase_matcher = PhraseMatcher(nlp.vocab)

countries = [nlp.make_doc(text) for text in ['Canada', 'United States', 'Mexico']]
days = [nlp.make_doc(text) for text in ['Monday', 'Tuesday', 'Wednesday', 'Thursday',
                                        'Friday', 'Saturday', 'Sunday']]

phrase_matcher.add("COUNTRIES",None, *countries)
phrase_matcher.add("DAYS",None, *days)


text = 'On Monday I travelled to Canada.'
doc = nlp(text)
matches = phrase_matcher(doc)