/**
* evaluate with given dmatrixs.
*
* @param evalMatrixs dmatrixs for evaluation
* @param evalNames name for eval dmatrixs, used for check results
* @param iter current eval iteration
* @return eval information
* @throws XGBoostError native error
*/
public String evalSet(DMatrix[] evalMatrixs, String[] evalNames, int iter) throws XGBoostError {
long[] handles = dmatrixsToHandles(evalMatrixs);
String[] evalInfo = new String[1];
JNIErrorHandle.checkCall(
XgboostJNI.XGBoosterEvalOneIter(handle, iter, handles, evalNames, evalInfo));
return evalInfo[0];
}
