T. Scharf questions

T. Scharf answers

• xgboost Random Forest with sparse matrix data and multinomial Y
• rsession CPU usage when idle
• XGBoost:What is the parameter 'objective' set?
• What does get_fscore() of an xgboost ML model do? [duplicate]
• xgboost: handling of missing values for split candidate search
• xgboost binary logistic regression
• What is difference between eval_metric and feval in xgboost?
• How is xgboost cover calculated?
• Why does autograd not produce gradient for intermediate variables?
• How is the parameter "weight" (DMatrix) used in the gradient boosting procedure (xgboost)?