如何在spacy文档中查找span的起始和结束索引

Question

我正在用spacy做一些NLP工作。我有一个句子和一个名词块，如何使用spacy找到名词块的起始词索引和结束词索引？例如，如果我有“我住在纽约市”，而名词块是"New York"，那么我想要3作为输出

Answer 1

import spacy
nlp = spacy.load("en_core_web_sm")
text="I live in New York City"
doc = nlp(text)

#To find the Noun chunks

Noun_chunks= [chunk.text for chunk in doc.noun_chunks]

#for loop to find the index of noun chunks

for noun in Noun_chunks:
  starting_index = text.index(noun)
  ending_index = text.index(noun) + len(noun) - 1
  print(noun,starting_index,ending_index)

#output
#There are 2 noun_chunks: I and New York City
#I 0 0 (starting at 0 and ending at 0)
#New York City 10 22 (starting at 10 and ending at 22)