On 02/24/2015 08:26 PM, Pagliari, Roberto wrote:
I have two questions about gridsearchcv
1.Is it possible to fix the random state of the underlying kfold, for
testing purposes?
2.When passing parameters, such as C and gamma for svm, does grid
search go through them in order?
1. Yes. By default, there is no shuffling, so you don't need to do
anything for reproducibility.
You can instantiate a StratifiedKFold object with shuffle=True and fixed
random seed and give that as the cv argument to GridSearchCV if you like.
2. It starts with varying the parameter which is lexically largest, and
each parameter is varied in order of the list you give it.
By default, calling GridSearchCV twice will give you identical results.
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