Re: [Scikit-learn-general] Negative tf-idf weight?

2011-12-24 Thread Lars Buitinck
2011/12/24 xinfan meng : > The TfidfTransformer return negative weights for terms appear in every > documents. In http://en.wikipedia.org/wiki/Tf%E2%80%93idf they do mention > negative weights, but I also  doubt that would make sense. I actually > already made a pull request. You can have a look at

Re: [Scikit-learn-general] Negative tf-idf weight?

2011-12-24 Thread xinfan meng
The TfidfTransformer return negative weights for terms appear in every documents. In http://en.wikipedia.org/wiki/Tf%E2%80%93idf they do mention negative weights, but I also doubt that would make sense. I actually already made a pull request. You can have a look at it. On Sat, Dec 24, 2011 at 5:5

Re: [Scikit-learn-general] Negative tf-idf weight?

2011-12-24 Thread Lars Buitinck
2011/12/24 xinfan meng : >    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. What do you mean? Does the TfidfTransforme

Re: [Scikit-learn-general] Working on Python 3 support

2011-12-24 Thread Fabian Pedregosa
This is great. I would just advise to contribute joblib fixes upstream, as it already has some fixes. Fabian On 12/24/11, Olivier Grisel wrote: > Hi all, > > In order to help us make scikit-learn work on python 3.x I have setup > a new jenkins slave configuration to build the project using pyth