ValueError: 'balanced_accuracy' is not a valid scoring value in scikit-learn











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1
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I tried to pass to GridSearchCV other scoring metrics like balanced_accuracy for Binary Classification (instead of the default accuracy)



  scoring = ['balanced_accuracy','recall','roc_auc','f1','precision']
validator = GridSearchCV(estimator=clf, param_grid=param_grid, scoring=scoring, refit=refit_scorer, cv=cv)


and got this error




ValueError: 'balanced_accuracy' is not a valid scoring value. Valid
options are
['accuracy','adjusted_mutual_info_score','adjusted_rand_score','average_precision','completeness_score','explained_variance','f1','f1_macro','f1_micro','f1_samples','f1_weighted','fowlkes_mallows_score','homogeneity_score','mutual_info_score','neg_log_loss','neg_mean_absolute_error','neg_mean_squared_error','neg_mean_squared_log_error','neg_median_absolute_error','normalized_mutual_info_score','precision','precision_macro','precision_micro','precision_samples','precision_weighted','r2','recall','recall_macro','recall_micro','recall_samples','recall_weighted','roc_auc','v_measure_score']




This is strange because 'balanced_accuracy' should be valid
Without defining balanced_accuracy then the code works fine



    scoring = ['recall','roc_auc','f1','precision']


Also the scoring metrics in the error above seems to be different from the ones in the document



Any ideas why? Thank you so much



scikit-learn version is 0.19.2










share|improve this question




















  • 3




    Please post the relevant code - as it is, there are not enough details for the question to be answered meaningfully. Also post your scikit-learn version (you can get it with sklearn.__version__))
    – desertnaut
    Nov 17 at 8:58












  • Thank you I added the code and scikit-learn version
    – Long
    Nov 17 at 14:54















up vote
1
down vote

favorite












I tried to pass to GridSearchCV other scoring metrics like balanced_accuracy for Binary Classification (instead of the default accuracy)



  scoring = ['balanced_accuracy','recall','roc_auc','f1','precision']
validator = GridSearchCV(estimator=clf, param_grid=param_grid, scoring=scoring, refit=refit_scorer, cv=cv)


and got this error




ValueError: 'balanced_accuracy' is not a valid scoring value. Valid
options are
['accuracy','adjusted_mutual_info_score','adjusted_rand_score','average_precision','completeness_score','explained_variance','f1','f1_macro','f1_micro','f1_samples','f1_weighted','fowlkes_mallows_score','homogeneity_score','mutual_info_score','neg_log_loss','neg_mean_absolute_error','neg_mean_squared_error','neg_mean_squared_log_error','neg_median_absolute_error','normalized_mutual_info_score','precision','precision_macro','precision_micro','precision_samples','precision_weighted','r2','recall','recall_macro','recall_micro','recall_samples','recall_weighted','roc_auc','v_measure_score']




This is strange because 'balanced_accuracy' should be valid
Without defining balanced_accuracy then the code works fine



    scoring = ['recall','roc_auc','f1','precision']


Also the scoring metrics in the error above seems to be different from the ones in the document



Any ideas why? Thank you so much



scikit-learn version is 0.19.2










share|improve this question




















  • 3




    Please post the relevant code - as it is, there are not enough details for the question to be answered meaningfully. Also post your scikit-learn version (you can get it with sklearn.__version__))
    – desertnaut
    Nov 17 at 8:58












  • Thank you I added the code and scikit-learn version
    – Long
    Nov 17 at 14:54













up vote
1
down vote

favorite









up vote
1
down vote

favorite











I tried to pass to GridSearchCV other scoring metrics like balanced_accuracy for Binary Classification (instead of the default accuracy)



  scoring = ['balanced_accuracy','recall','roc_auc','f1','precision']
validator = GridSearchCV(estimator=clf, param_grid=param_grid, scoring=scoring, refit=refit_scorer, cv=cv)


and got this error




ValueError: 'balanced_accuracy' is not a valid scoring value. Valid
options are
['accuracy','adjusted_mutual_info_score','adjusted_rand_score','average_precision','completeness_score','explained_variance','f1','f1_macro','f1_micro','f1_samples','f1_weighted','fowlkes_mallows_score','homogeneity_score','mutual_info_score','neg_log_loss','neg_mean_absolute_error','neg_mean_squared_error','neg_mean_squared_log_error','neg_median_absolute_error','normalized_mutual_info_score','precision','precision_macro','precision_micro','precision_samples','precision_weighted','r2','recall','recall_macro','recall_micro','recall_samples','recall_weighted','roc_auc','v_measure_score']




This is strange because 'balanced_accuracy' should be valid
Without defining balanced_accuracy then the code works fine



    scoring = ['recall','roc_auc','f1','precision']


Also the scoring metrics in the error above seems to be different from the ones in the document



Any ideas why? Thank you so much



scikit-learn version is 0.19.2










share|improve this question















I tried to pass to GridSearchCV other scoring metrics like balanced_accuracy for Binary Classification (instead of the default accuracy)



  scoring = ['balanced_accuracy','recall','roc_auc','f1','precision']
validator = GridSearchCV(estimator=clf, param_grid=param_grid, scoring=scoring, refit=refit_scorer, cv=cv)


and got this error




ValueError: 'balanced_accuracy' is not a valid scoring value. Valid
options are
['accuracy','adjusted_mutual_info_score','adjusted_rand_score','average_precision','completeness_score','explained_variance','f1','f1_macro','f1_micro','f1_samples','f1_weighted','fowlkes_mallows_score','homogeneity_score','mutual_info_score','neg_log_loss','neg_mean_absolute_error','neg_mean_squared_error','neg_mean_squared_log_error','neg_median_absolute_error','normalized_mutual_info_score','precision','precision_macro','precision_micro','precision_samples','precision_weighted','r2','recall','recall_macro','recall_micro','recall_samples','recall_weighted','roc_auc','v_measure_score']




This is strange because 'balanced_accuracy' should be valid
Without defining balanced_accuracy then the code works fine



    scoring = ['recall','roc_auc','f1','precision']


Also the scoring metrics in the error above seems to be different from the ones in the document



Any ideas why? Thank you so much



scikit-learn version is 0.19.2







python machine-learning scikit-learn metrics






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edited Nov 17 at 14:53

























asked Nov 17 at 7:54









Long

4418




4418








  • 3




    Please post the relevant code - as it is, there are not enough details for the question to be answered meaningfully. Also post your scikit-learn version (you can get it with sklearn.__version__))
    – desertnaut
    Nov 17 at 8:58












  • Thank you I added the code and scikit-learn version
    – Long
    Nov 17 at 14:54














  • 3




    Please post the relevant code - as it is, there are not enough details for the question to be answered meaningfully. Also post your scikit-learn version (you can get it with sklearn.__version__))
    – desertnaut
    Nov 17 at 8:58












  • Thank you I added the code and scikit-learn version
    – Long
    Nov 17 at 14:54








3




3




Please post the relevant code - as it is, there are not enough details for the question to be answered meaningfully. Also post your scikit-learn version (you can get it with sklearn.__version__))
– desertnaut
Nov 17 at 8:58






Please post the relevant code - as it is, there are not enough details for the question to be answered meaningfully. Also post your scikit-learn version (you can get it with sklearn.__version__))
– desertnaut
Nov 17 at 8:58














Thank you I added the code and scikit-learn version
– Long
Nov 17 at 14:54




Thank you I added the code and scikit-learn version
– Long
Nov 17 at 14:54












1 Answer
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up vote
2
down vote



accepted










Update your sklearn to the latest version if you want to use balanced_accuracy. As you can see from the 0.19 documentation balanced_accuracy is not a valid scoring metric. It was added in 0.20.






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    1 Answer
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    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

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    active

    oldest

    votes








    up vote
    2
    down vote



    accepted










    Update your sklearn to the latest version if you want to use balanced_accuracy. As you can see from the 0.19 documentation balanced_accuracy is not a valid scoring metric. It was added in 0.20.






    share|improve this answer

























      up vote
      2
      down vote



      accepted










      Update your sklearn to the latest version if you want to use balanced_accuracy. As you can see from the 0.19 documentation balanced_accuracy is not a valid scoring metric. It was added in 0.20.






      share|improve this answer























        up vote
        2
        down vote



        accepted







        up vote
        2
        down vote



        accepted






        Update your sklearn to the latest version if you want to use balanced_accuracy. As you can see from the 0.19 documentation balanced_accuracy is not a valid scoring metric. It was added in 0.20.






        share|improve this answer












        Update your sklearn to the latest version if you want to use balanced_accuracy. As you can see from the 0.19 documentation balanced_accuracy is not a valid scoring metric. It was added in 0.20.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 17 at 15:03









        Mihai Chelaru

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