mirror of
https://github.com/explosion/spaCy.git
synced 2024-12-25 17:36:30 +03:00
Ensure noun chunks can't be nested. Closes #955
This commit is contained in:
parent
c9ec24b257
commit
60703cede5
|
@ -10,15 +10,22 @@ def english_noun_chunks(obj):
|
|||
Works on both Doc and Span.
|
||||
"""
|
||||
labels = ['nsubj', 'dobj', 'nsubjpass', 'pcomp', 'pobj',
|
||||
'attr', 'ROOT', 'root']
|
||||
'attr', 'ROOT']
|
||||
doc = obj.doc # Ensure works on both Doc and Span.
|
||||
np_deps = [doc.vocab.strings[label] for label in labels]
|
||||
conj = doc.vocab.strings['conj']
|
||||
np_label = doc.vocab.strings['NP']
|
||||
seen = set()
|
||||
for i, word in enumerate(obj):
|
||||
if word.pos not in (NOUN, PROPN, PRON):
|
||||
continue
|
||||
# Prevent nested chunks from being produced
|
||||
if word.i in seen:
|
||||
continue
|
||||
if word.dep in np_deps:
|
||||
if any(w.i in seen for w in word.subtree):
|
||||
continue
|
||||
seen.update(j for j in range(word.left_edge.i, word.i+1))
|
||||
yield word.left_edge.i, word.i+1, np_label
|
||||
elif word.dep == conj:
|
||||
head = word.head
|
||||
|
@ -26,6 +33,9 @@ def english_noun_chunks(obj):
|
|||
head = head.head
|
||||
# If the head is an NP, and we're coordinated to it, we're an NP
|
||||
if head.dep in np_deps:
|
||||
if any(w.i in seen for w in word.subtree):
|
||||
continue
|
||||
seen.update(j for j in range(word.left_edge.i, word.i+1))
|
||||
yield word.left_edge.i, word.i+1, np_label
|
||||
|
||||
|
||||
|
|
Loading…
Reference in New Issue
Block a user