How to use feature-selector for 3 classes

[chawengs]

Hi Will, Thanks for your feature selector tool. It work fine for 2 classes feature selection. I have tried to use for 3 classes. It reports error as details.

LightGBMError: Multiclass objective and metrics don't match

Do you know how to fix it

Regards, Chaweng

[code-yuan-shi]

Have you solved it yet? if yes, how to?

[code-yuan-shi]

基本确定了，eval_metric设定为AUC导致报错的（AUC不支持多分类吧），删除掉这个参数或者指定为logloss等评估指标就可以了

[chawengs]

You can try to remove eval_metric = eval_metric

from: model.fit(train_features, train_labels, eval_metric = eval_metric,eval_set = [(valid_features, valid_labels)],early_stopping_rounds = 100, verbose = -1)

to:

model.fit(train_features, train_labels, eval_set = [(valid_features, valid_labels)],early_stopping_rounds = 100, verbose = -1)