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Java example source code file (SparkDataSetLossCalculator.java)
The SparkDataSetLossCalculator.java Java example source code/* * * * Copyright 2016 Skymind,Inc. * * * * Licensed 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.deeplearning4j.spark.earlystopping; import org.apache.spark.SparkContext; import org.apache.spark.api.java.JavaRDD; import org.deeplearning4j.earlystopping.scorecalc.ScoreCalculator; import org.deeplearning4j.nn.multilayer.MultiLayerNetwork; import org.deeplearning4j.spark.impl.multilayer.SparkDl4jMultiLayer; import org.nd4j.linalg.dataset.DataSet; /** Score calculator to calculate the total loss for the {@link MultiLayerNetwork} on that data set (data set * as a {@link JavaRDD<DataSet>}), using Spark. * Typically used to calculate the loss on a test set. */ public class SparkDataSetLossCalculator implements ScoreCalculator<MultiLayerNetwork> { private JavaRDD<DataSet> data; private boolean average; private SparkContext sc; /**Calculate the score (loss function value) on a given data set (usually a test set) * * @param data Data set to calculate the score for * @param average Whether to return the average (sum of loss / N) or just (sum of loss) */ public SparkDataSetLossCalculator(JavaRDD<DataSet> data, boolean average, SparkContext sc) { this.data = data; this.average = average; this.sc = sc; } @Override public double calculateScore(MultiLayerNetwork network) { SparkDl4jMultiLayer net = new SparkDl4jMultiLayer(sc,network,null); return net.calculateScore(data,average); } } Other Java examples (source code examples)Here is a short list of links related to this Java SparkDataSetLossCalculator.java source code file: |
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