2013/7/3 Josh Wasserstein <ribonucle...@gmail.com>:
> Perhaps more oddly, why is GridSearchCV so sensitive to it (note that a
> simple svm.SVC().fit(X,y) without scaling was already fast.
>
> In other words, it looks like scaling affects GridSearchCV in particular.

According to your logs, it's slow when C=100 (lower regularization).
scaling makes the SVM problem easier to solve, even more so when the
problem is not regularized much.

--
Olivier

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