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Java example source code file (VarianceVariationCondition.java)
The VarianceVariationCondition.java Java example source code/* * * * Copyright 2015 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.clustering.algorithm.condition; import org.deeplearning4j.clustering.algorithm.iteration.IterationHistory; import org.nd4j.linalg.indexing.conditions.Condition; import org.nd4j.linalg.indexing.conditions.LessThan; public class VarianceVariationCondition implements ClusteringAlgorithmCondition { private Condition varianceVariationCondition; private int period; protected VarianceVariationCondition(Condition varianceVariationCondition, int period) { super(); this.varianceVariationCondition = varianceVariationCondition; this.period = period; } public static VarianceVariationCondition varianceVariationLessThan(double varianceVariation, int period) { Condition condition = new LessThan(varianceVariation); return new VarianceVariationCondition(condition, period); } public boolean isSatisfied(IterationHistory iterationHistory) { if( iterationHistory.getIterationCount()<=period ) return false; for( int i=0, j=iterationHistory.getIterationCount();i<period;i++) { double variation = iterationHistory.getIterationInfo(j-i).getClusterSetInfo().getPointDistanceFromClusterVariance(); variation -= iterationHistory.getIterationInfo(j-i-1).getClusterSetInfo().getPointDistanceFromClusterVariance(); variation /= iterationHistory.getIterationInfo(j-i-1).getClusterSetInfo().getPointDistanceFromClusterVariance(); if( !varianceVariationCondition.apply(variation) ) return false; } return true; } } Other Java examples (source code examples)Here is a short list of links related to this Java VarianceVariationCondition.java source code file: |
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