@Emily If you want to use SVM's to do this,
LinearSVC, NuSVC and SVC all three have the `class_weight` parameter
as far as I know, but just make sure as Olivier said.
2012/6/5 Olivier Grisel <[email protected]>
> 2012/6/5 Jaques Grobler <[email protected]>:
>
Hi,
>
> I'm new to scikit and machine learning in general and I trying to use svm
> to find the best way to classify a dataset containing lots of negatives. I
> was wondering if there is a way to increase the penalty factor associated
> with misclassification of the positive class?
> Thanks,
>
> Emily
> I'm not that clued up about this specifically, but I'd think that using
> > the `class_weight` parameter for the svm classifier in sklearn should
> > achieve this.
>
> Yes class_weight should be able to address that. Not all classifiers
> support it though, please check the docstrings.
>
> --
> Olivier
> http://twitter.com/ogrisel - http://github.com/ogrisel
>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Scikit-learn-general mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
>
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
Scikit-learn-general mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
