8000 Problem with multiclass · Issue #13 · catboost/catboost · GitHub
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DBusAI opened this issue Jul 18, 2017 · 3 comments
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Problem with multiclass #13

DBusAI opened this issue Jul 18, 2017 · 3 comments

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@DBusAI
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DBusAI commented Jul 18, 2017 
clf = cb.CatBoostClassifier()
score = cross_val_score(clf,x_train2,y,cv=5,scoring='neg_log_loss')
score.mean()

/usr/local/lib/python2.7/dist-packages/catboost/core.pyc in _fit(self, X, y, cat_features, sample_weight, baseline, use_best_model, eval_set, verbose, plot)
386 raise ImportError(e.message)
387 with log_fixup():
--> 388 self._train(X, eval_set, params)
389 if calc_feature_importance:
390 setattr(self, "feature_importance", self.feature_importances(X))

_catboost.pyx in _catboost._CatBoostBase._train (/home/rnefyodov/.ya/build/build_root/7466703371396a7832336d7773326674/catboost/python-package/catboost/_catboost.pyx.cpp:13630)()

_catboost.pyx in _catboost._CatBoost._train (/home/rnefyodov/.ya/build/build_root/7466703371396a7832336d7773326674/catboost/python-package/catboost/_catboost.pyx.cpp:9713)()

_catboost.pyx in _catboost._CatBoost._train (/home/rnefyodov/.ya/build/build_root/7466703371396a7832336d7773326674/catboost/python-package/catboost/_catboost.pyx.cpp:9507)()

CatboostError: catboost/libs/algo/train_model.cpp:109: All targets are greater than border
@donskov7
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donskov7 commented Jul 18, 2017 •
edited
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For multiclass use loss_function='MultiClass'
clf = cb.CatBoostClassifier(loss_function='MultiClass')

@DBusAI
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DBusAI commented Jul 18, 2017

Thx

@DBusAI DBusAI closed this as completed Jul 18, 2017
@prasanth-ntu
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Thanks. It worked for the multiclass now.

@ryanshrott ryanshrott mentioned this issue May 21, 2024
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@prasanth-ntu @donskov7 @DBusAI
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