Scikit-learn GridSearch giving “ValueError: multiclass format is not supported” error

Question

I\'m trying to use GridSearch for parameter estimation of LinearSVC() as follows -

clf_SVM = LinearSVC()
params = {
          \'C\': [0.5, 1.0, 1.5],
          \         


        

Answer 1

Remove scoring='roc_auc' and it will work as roc_auc curve does not support categorical data.