| /* |
| * 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.solr.client.solrj.io.eval; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.commons.math3.stat.inference.ChiSquareTest; |
| import org.apache.solr.client.solrj.io.Tuple; |
| import org.apache.solr.client.solrj.io.stream.expr.StreamExpression; |
| import org.apache.solr.client.solrj.io.stream.expr.StreamFactory; |
| import org.apache.solr.common.params.StreamParams; |
| |
| |
| public class ChiSquareDataSetEvaluator extends RecursiveNumericListEvaluator implements TwoValueWorker { |
| protected static final long serialVersionUID = 1L; |
| |
| public ChiSquareDataSetEvaluator(StreamExpression expression, StreamFactory factory) throws IOException { |
| super(expression, factory); |
| } |
| |
| @Override |
| public Object doWork(Object value1, Object value2) throws IOException { |
| |
| @SuppressWarnings({"unchecked"}) |
| List<Number> listA = (List<Number>) value1; |
| @SuppressWarnings({"unchecked"}) |
| List<Number> listB = (List<Number>) value2; |
| |
| long[] sampleA = new long[listA.size()]; |
| long[] sampleB = new long[listB.size()]; |
| |
| for(int i=0; i<sampleA.length; i++) { |
| sampleA[i] = listA.get(i).longValue(); |
| } |
| |
| for(int i=0; i<sampleB.length; i++) { |
| sampleB[i] = listB.get(i).longValue(); |
| } |
| |
| ChiSquareTest chiSquareTest = new ChiSquareTest(); |
| double chiSquare = chiSquareTest.chiSquareDataSetsComparison(sampleA, sampleB); |
| double p = chiSquareTest.chiSquareTestDataSetsComparison(sampleA, sampleB); |
| |
| Tuple tuple = new Tuple(); |
| tuple.put("chisquare-statistic", chiSquare); |
| tuple.put(StreamParams.P_VALUE, p); |
| return tuple; |
| |
| } |
| } |