Hi.
In the current implementation of TfidfTransformer. It is possible to
have a negative tf-idf weight. In IR area, it probably make sense, but for
the text classification task, I would probably never expect a negative
value. For example, if I use the tf-idf weighted matrix in Naive Bayes, the
classification would be totally wrong. What do you think about? If this is
a problem. I would like to make a pull request to fix this.
--
Best Wishes
--------------------------------------------
Meng Xinfan（蒙新泛）
Institute of Computational Linguistics
Department of Computer Science & Technology
School of Electronic Engineering & Computer Science
Peking University
Beijing, 100871
China
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