Set base_score in Learning API Python

[pandikapinata]

Hi, can anyone tell me how to set base_score in learning API?
I know in scikit-learn API use param base_score to set initial prediction
but can i set in learning API too?
cause in this issue https://github.com/dmlc/xgboost/issues/799 set to mean of target value increase speed of training data

[jiamingy]

params['base_score'] = 0.5
xgboost.train(params, ...)

[Angel0726]

@pandikapinata

Hi, can anyone tell me how to set base_score in learning API?
I know in scikit-learn API use param base_score to set initial prediction
but can i set in learning API too?

i find if you use ‘objective’:‘binary:logistic’. the base_score does not work

[jiamingy]

It does work. But need to consider the effect of link function in objective.