Scikit-learn classifier with custom scorer dependent on a training feature

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Chapters
00:00 Question
02:50 Accepted answer (Score 0)
03:09 Thank you

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Full question
https://stackoverflow.com/questions/4924...

Question links:
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https://meta.stackexchange.com/help/lice...

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Tags
#python #machinelearning #scikitlearn #classification #gridsearch

#avk47

ACCEPTED ANSWER

Score 0

You can do something like this (note you have given no real code so this is barebones)

X = [...]
y = [...]

def custom_scorer_function(y, y_pred, **kwargs):
   a_feature = X[:,1]
   # now have y, y_pred and the feature you want

custom_scorer = make_scorer(custom_scorer_function, greater_is_better=True)
...