lightgbm如何预测_proba？

Question

if i use lightgbm

there is two methods of using lightgbm. first method: -

model=lgb.LGBMClassifier()
model.fit(X,y)
model.predict_proba(values)

i can get predict_proba method to predict probabilities. if i use it natively

import lightgbm as lgb
dset = lgb.Dataset(X, label=y)
params = {}
params['learning_rate'] = 0.003
params['boosting_type'] = 'gbdt'
params['objective'] = 'binary'
params['metric'] = 'binary_logloss'
model = lgb.train(params, dset, 100)

I can get predict method but predict_proba method dont exist if i use this method. anyone can advise what i did wrong?

Answer 1

You can only use predict_proba in sklearn fit(). It does not exist in lightgbm native train().