machine learning - Response variable in java implementation of xgBoost?

Question

Example from https://xgboost.readthedocs.io/en/latest/jvm/java_intro.html says that you train your model with:

Booster booster = XGBoost.train(trainMat, params, nround, watches, null, null);

But I cannot understand where is your y_train (response / explained variable) used? trainMat containes variables that explain the response (X_train), but from where model even knows the correct values it should learn from?

In python implementation, we have .fit() for that: xgb.fit(X_train,y_train) where we give both explaining and explained values.

How give response values to xgBoost training in java? Should it be in DMatrix?

question from:https://stackoverflow.com/questions/65846036/response-variable-in-java-implementation-of-xgboost

Answer 1

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