Question

我正在导入nltk，但它会出现以下错误。

Traceback (most recent call last):
  File "/home/control/Work/Intelligence/Datasets/whats cooking/new.py", line 4, in <module>
    import nltk
  File "/usr/local/lib/python2.7/dist-packages/nltk-3.0.5-py2.7.egg/nltk/__init__.py", line 137, in <module>
    from nltk.stem import *
  File "/usr/local/lib/python2.7/dist-packages/nltk-3.0.5-py2.7.egg/nltk/stem/__init__.py", line 29, in <module>
    from nltk.stem.snowball import SnowballStemmer
  File "/usr/local/lib/python2.7/dist-packages/nltk-3.0.5-py2.7.egg/nltk/stem/snowball.py", line 25, in <module>
    from nltk.stem import porter
ImportError: cannot import name porter

我的nltk几天前工作正常，我没有更新或改变任何东西，我也安装了所有的nltk数据。

Answer 1

在NLTK中使用Porter词干分析器（见http://www.nltk.org/howto/stem.html）将是：

>>> from nltk.stem import PorterStemmer
>>> porter = PorterStemmer()
>>> sent = 'I went on wild geese chases'
>>> porter.stem(sent)
u'I went on wild geese chas'

注意： PorterStemmer对于不规则复数形式不能很好地使用

看看：

使用Porter Stemmer时的NLTK importError

1 个答案: