1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.math.stat.descriptive; 18 19 /** 20 * Weighted evaluation for statistics. 21 * 22 * @since 2.1 23 * @version $Revision: 894474 $ $Date: 2009-12-29 21:02:37 +0100 (mar. 29 dc. 2009) $ 24 */ 25 public interface WeightedEvaluation { 26 27 /** 28 * Returns the result of evaluating the statistic over the input array, 29 * using the supplied weights. 30 * 31 * @param values input array 32 * @param weights array of weights 33 * @return the value of the weighted statistic applied to the input array 34 */ 35 double evaluate(double[] values, double[] weights); 36 37 /** 38 * Returns the result of evaluating the statistic over the specified entries 39 * in the input array, using corresponding entries in the supplied weights array. 40 * 41 * @param values the input array 42 * @param weights array of weights 43 * @param begin the index of the first element to include 44 * @param length the number of elements to include 45 * @return the value of the weighted statistic applied to the included array entries 46 */ 47 double evaluate(double[] values, double[] weights, int begin, int length); 48 49 } 50
