POS标记-NLTK认为名词是形容词 [英] POS tagging - NLTK thinks noun is adjective

问题描述

在以下代码中，为什么nltk认为鱼"是形容词而不是名词?

In the following code, why does nltk think 'fish' is an adjective and not a noun?

>>> import nltk
>>> s = "a woman needs a man like a fish needs a bicycle"
>>> nltk.pos_tag(s.split())
[('a', 'DT'), ('woman', 'NN'), ('needs', 'VBZ'), ('a', 'DT'), ('man', 'NN'), ('like', 'IN'), ('a', 'DT'), ('fish', 'JJ'), ('needs', 'NNS'), ('a', 'DT'), ('bicycle', 'NN')]

推荐答案

如果您按照 fish 不能是形容词.然后，对于带有多个可能的POS标签的所有单词，您可以使用统计标签器作为退避标签器.

If you used a Lookup Tagger as described in the NLTK book, chapter 5 (for example using WordNet as lookup reference) first, your tagger would already "know" that fish cannot be an adjective. For all words with several possible POS Tags you could then use a statistical tagger as a backoff tagger.

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