DLClassifier is a specialized DLEstimator that simplifies the data format for classification tasks.
DLClassifierModel is a specialized DLModel for classification tasks.
DLEstimator helps to train a BigDL Model with the Spark ML Estimator/Transfomer pattern, thus Spark users can conveniently fit BigDL into Spark ML pipeline.
DLModel helps embed a BigDL model into a Spark Transformer, thus Spark users can conveniently merge BigDL into Spark ML pipeline.