Cross-validated FPR/TPR are not provided by default. You need to provide your own function to gridSearchCV if you want to know their values .
From: shalu jhanwar [mailto:shalu.jhanwa...@gmail.com] Sent: Friday, October 24, 2014 11:36 AM To: Pagliari, Roberto Subject: Fwd: [Scikit-learn-general] Regarding TPR and FPR Hey Roberto, Could you please suggest something for my below query? thanks! S. ---------- Forwarded message ---------- From: shalu jhanwar <shalu.jhanwa...@gmail.com<mailto:shalu.jhanwa...@gmail.com>> Date: Fri, Oct 24, 2014 at 4:33 PM Subject: Re: [Scikit-learn-general] Regarding TPR and FPR To: scikit-learn-general@lists.sourceforge.net<mailto:scikit-learn-general@lists.sourceforge.net> Hi, thanks for the reply. I want to make a ROC (as attachment) to compare classifiers on my dataset. That's why I need mean TPR and FPR of all the cross validations. Any suggestion?? Shalu On Fri, Oct 24, 2014 at 4:09 PM, Pagliari, Roberto <rpagli...@appcomsci.com<mailto:rpagli...@appcomsci.com>> wrote: It depends on what you are doing. If all you need to do is to compute TPR and FPR, and you don’t need ROC, you can use the confusion_matrix module. Assuming you have two classes, from sklearn.metrics import confusion_matrix # some code cm = confusion_matrix(y_test, y_pred) TPR = cm[1][1] / (cm[0][1]+cm[1][1]); FPR=cm[0][1]/(cm[0][0]+cm[0][1]) From: shalu jhanwar [mailto:shalu.jhanwa...@gmail.com<mailto:shalu.jhanwa...@gmail.com>] Sent: Friday, October 24, 2014 3:07 AM To: scikit-learn-general@lists.sourceforge.net<mailto:scikit-learn-general@lists.sourceforge.net> Subject: [Scikit-learn-general] Regarding TPR and FPR Hi scikit users, Can anyone let me know that how can i get mean TPR and mean FPR to plot ROC using scikit? I'm referring to http://scikit-learn.org/stable/auto_examples/plot_roc.html link. Any idea would be appreciated? Thanks in advance. Shalu ------------------------------------------------------------------------------ _______________________________________________ Scikit-learn-general mailing list Scikit-learn-general@lists.sourceforge.net<mailto:Scikit-learn-general@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
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