[英]How to get all the hyponyms of a word/synset in python nltk and wordnet?
[英]How to get the wordnet sense frequency of a synset in NLTK?
根據文檔,我可以這樣在nltk中加載一個帶有感官標記的語料庫:
>>> from nltk.corpus import wordnet_ic
>>> brown_ic = wordnet_ic.ic('ic-brown.dat')
>>> semcor_ic = wordnet_ic.ic('ic-semcor.dat')
我還可以得到definition
, pos
, offset
, examples
為這樣的:
>>> wn.synset('dog.n.01').examples
>>> wn.synset('dog.n.01').definition
但是如何從語料庫中獲得同義詞的頻率呢? 分解問題:
我設法做到了。
from nltk.corpus import wordnet as wn
word = "dog"
synsets = wn.synsets(word)
sense2freq = {}
for s in synsets:
freq = 0
for lemma in s.lemmas:
freq+=lemma.count()
sense2freq[s.offset+"-"+s.pos] = freq
for s in sense2freq:
print s, sense2freq[s]
如果您只需要知道最常見的單詞是什么,則可以執行wn.synsets(word)[0]
因為WordNet通常wn.synsets(word)[0]
它們從最頻繁的wn.synsets(word)[0]
排列到最不頻繁的wn.synsets(word)[0]
。
(來源:Daniel Jurafsky的語音和語言處理第二版)
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