Fanoid commented on code in PR #210: URL: https://github.com/apache/flink-ml/pull/210#discussion_r1113982702
########## flink-ml-lib/src/main/java/org/apache/flink/ml/classification/gbtclassifier/GBTClassifier.java: ########## @@ -0,0 +1,75 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.flink.ml.classification.gbtclassifier; + +import org.apache.flink.ml.api.Estimator; +import org.apache.flink.ml.common.gbt.GBTModelData; +import org.apache.flink.ml.common.gbt.GBTRunner; +import org.apache.flink.ml.param.Param; +import org.apache.flink.ml.util.ParamUtils; +import org.apache.flink.ml.util.ReadWriteUtils; +import org.apache.flink.streaming.api.datastream.DataStream; +import org.apache.flink.table.api.Table; +import org.apache.flink.table.api.bridge.java.StreamTableEnvironment; +import org.apache.flink.table.api.internal.TableImpl; +import org.apache.flink.util.Preconditions; + +import java.io.IOException; +import java.util.HashMap; +import java.util.Map; + +import static org.apache.flink.table.api.Expressions.$; + +/** An Estimator which implements the gradient boosting trees classification algorithm. */ +public class GBTClassifier + implements Estimator<GBTClassifier, GBTClassifierModel>, + GBTClassifierParams<GBTClassifier> { + + private final Map<Param<?>, Object> paramMap = new HashMap<>(); + + public GBTClassifier() { + ParamUtils.initializeMapWithDefaultValues(paramMap, this); + } + + public static GBTClassifier load(StreamTableEnvironment tEnv, String path) throws IOException { + return ReadWriteUtils.loadStageParam(path); + } + + @Override + public Map<Param<?>, Object> getParamMap() { + return paramMap; + } + + @Override + public GBTClassifierModel fit(Table... inputs) { + Preconditions.checkArgument(inputs.length == 1); + StreamTableEnvironment tEnv = + (StreamTableEnvironment) ((TableImpl) inputs[0]).getTableEnvironment(); + DataStream<GBTModelData> modelData = GBTRunner.trainClassifier(inputs[0], this); Review Comment: I'm not quite sure about your question. Do you mean translate tests in `GBTRunnerTest` into `GBTClassifierTest ` and `GBTRegressorTest`? We already have public API tests in `GBTClassifierTest ` and `GBTRegressorTest`. And `GBTRunnerTest` is used to test functions of `GBTRunner` solely. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
