擅长:python、mysql、java
<p>词干是把一个给定的单词还原成它的词根或屈折形式的过程,这里你要试着把整个句子都词干化</p>
<p><strong>遵循以下步骤:</p>
<pre><code>from nltk.tokenize import word_tokenize
from nltk.stem import PorterStemmer
sentence = "numpang wifi stop gadget shopping"
tokens = word_tokenize(sentence)
stemmer=PorterStemmer()
Output=[stemmer.stem(word) for word in tokens]
</code></pre>