[jvm-packages]xgboost4j support `early stop` on Validation set


#1

Hi all
I am using XGBoostClassifier, setting two parameters num_early_stopping_rounds and maximize_evaluation_metrics. Compared to python package, I found there is no way to set validation set like watchlist. Is this feature supported or still in the plan.
Please let me know, thank you very much


#2

Currently work in progress: https://github.com/dmlc/xgboost/pull/3910


#3

Got it ,thank you for your reply