xgboost4j-spark provides 2 sets of API for setting features, one for CPU, another for GPU, which may cause confusion. This PR removes the GPU API and adds an override CPU function setFeaturesCol to accept Array[String] parameters.
xgboost4j-spark provides 2 sets of API for setting features, one for CPU, another for GPU, which may cause confusion. This PR removes the GPU API and adds an override CPU function setFeaturesCol to accept Array[String] parameters.