NLP task3特徵選擇_文本挖掘預處理之TF-IDF

文本挖掘預處理之TF-IDF corpus=[「I come to China to travel」, 「This is a car polupar in China」, "I love tea and Apple ", 「The work is to write some papers in science」] [u’and’, u’apple’, u’car’, u’china’, u’com

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