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Merge pull request #5462 from adrianeboyd/feature/lemmatizer-all-upos

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Extend lemmatizer rules for all UPOS tags
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Matthew Honnibal 2020-05-21 16:05:31 +02:00 committed by GitHub
commit 26cd6a0229
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1 changed files with 11 additions and 11 deletions
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22
spacy/lemmatizer.py
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@ -6,6 +6,7 @@ from collections import OrderedDict
from .symbols import NOUN, VERB, ADJ, PUNCT, PROPN
from .errors import Errors
from .lookups import Lookups
from .parts_of_speech import NAMES as UPOS_NAMES
class Lemmatizer(object):
@ -43,17 +44,11 @@ class Lemmatizer(object):
lookup_table = self.lookups.get_table("lemma_lookup", {})
if "lemma_rules" not in self.lookups:
return [lookup_table.get(string, string)]
if univ_pos in (NOUN, "NOUN", "noun"):
univ_pos = "noun"
elif univ_pos in (VERB, "VERB", "verb"):
univ_pos = "verb"
elif univ_pos in (ADJ, "ADJ", "adj"):
univ_pos = "adj"
elif univ_pos in (PUNCT, "PUNCT", "punct"):
univ_pos = "punct"
elif univ_pos in (PROPN, "PROPN"):
return [string]
else:
if isinstance(univ_pos, int):
univ_pos = UPOS_NAMES.get(univ_pos, "X")
univ_pos = univ_pos.lower()
if univ_pos in ("", "eol", "space"):
return [string.lower()]
# See Issue #435 for example of where this logic is requied.
if self.is_base_form(univ_pos, morphology):
@ -61,6 +56,11 @@ class Lemmatizer(object):
index_table = self.lookups.get_table("lemma_index", {})
exc_table = self.lookups.get_table("lemma_exc", {})
rules_table = self.lookups.get_table("lemma_rules", {})
if not any((index_table.get(univ_pos), exc_table.get(univ_pos), rules_table.get(univ_pos))):
if univ_pos == "propn":
return [string]
else:
return [string.lower()]
lemmas = self.lemmatize(
string,
index_table.get(univ_pos, {}),