Re: [Scikit-learn-general] Imbalance in scikit-learn
Using the sample_weight parameter in the RandomForestClassifier along with the balance_weights method from the preprocessing module to generate the sample weights might work as well. You can check this link for a previous related discussion. http://sourceforge.net/mailarchive/message.php?msg_id=30460177 -Manish On Feb 25, 2013, at 5:09 AM, Philipp Singer kill...@gmail.com wrote: Hey! One simple solution that often works wonders is to set the class_weight parameter of a classifier (if available) to 'auto' [1]. If you have enough data, it often also makes sense to balance the data beforehand. [1] http://scikit-learn.org/dev/modules/svm.html#unbalanced-problems Am 25.02.2013 14:02, schrieb Maor Hornstein: I'm using scikit-learn in my Python program in order to perform some machine-learning operations. The problem is that my data-set has severe imbalance issues. Does anyone know a solution for imbalance in scikit-learn or in python in general? Thanks :) -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Scikit-learn-general mailing list Scikit-learn-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/scikit-learn-general -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Scikit-learn-general mailing list Scikit-learn-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/scikit-learn-general -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Scikit-learn-general mailing list Scikit-learn-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
[Scikit-learn-general] Imbalance in scikit-learn
I'm using scikit-learn in my Python program in order to perform some machine-learning operations. The problem is that my data-set has severe imbalance issues. Does anyone know a solution for imbalance in scikit-learn or in python in general? Thanks :) -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb___ Scikit-learn-general mailing list Scikit-learn-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
Re: [Scikit-learn-general] Imbalance in scikit-learn
Hey! One simple solution that often works wonders is to set the class_weight parameter of a classifier (if available) to 'auto' [1]. If you have enough data, it often also makes sense to balance the data beforehand. [1] http://scikit-learn.org/dev/modules/svm.html#unbalanced-problems Am 25.02.2013 14:02, schrieb Maor Hornstein: I'm using scikit-learn in my Python program in order to perform some machine-learning operations. The problem is that my data-set has severe imbalance issues. Does anyone know a solution for imbalance in scikit-learn or in python in general? Thanks :) -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Scikit-learn-general mailing list Scikit-learn-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/scikit-learn-general -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Scikit-learn-general mailing list Scikit-learn-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
