On 07/30/2013 07:06 PM, Wifi Gi wrote: > > I realize this is something in the code that I can't modify in my > script, but I was wondering if there's a specific reason why the > scoring must return only one number? From the array in the error > message, it doesn't seem to have any problem calculating multiple > metrics for a cross-validation fold, just storing them.If the return > function was just tweaked to accept multiple values, that would give > the scoring function a lot more functionality. Because we haven't had time to agree on an API. There are several pull-requests for that. You should keep in mind that the GridSearchCV also uses scoring, but needs to find a best in the end. Still you might want to have a record of more than just the one score by which you find the rest. You can find the discussions in the issue tracker.
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