1dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond/* 2dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Licensed to the Apache Software Foundation (ASF) under one or more 3dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * contributor license agreements. See the NOTICE file distributed with 4dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * this work for additional information regarding copyright ownership. 5dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * The ASF licenses this file to You under the Apache License, Version 2.0 6dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * (the "License"); you may not use this file except in compliance with 7dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * the License. You may obtain a copy of the License at 8dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * 9dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * http://www.apache.org/licenses/LICENSE-2.0 10dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * 11dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Unless required by applicable law or agreed to in writing, software 12dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * distributed under the License is distributed on an "AS IS" BASIS, 13dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * See the License for the specific language governing permissions and 15dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * limitations under the License. 16dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 17dee0849a9704d532af0b550146cbafbaa6ee1d19Raymondpackage org.apache.commons.math.distribution; 18dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 19dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond/** 20dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * The Gamma Distribution. 21dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * 22dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * <p> 23dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * References: 24dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * <ul> 25dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * <li><a href="http://mathworld.wolfram.com/GammaDistribution.html"> 26dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Gamma Distribution</a></li> 27dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * </ul> 28dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * </p> 29dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * 30dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @version $Revision: 920852 $ $Date: 2010-03-09 13:53:44 +0100 (mar. 09 mars 2010) $ 31dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 32dee0849a9704d532af0b550146cbafbaa6ee1d19Raymondpublic interface GammaDistribution extends ContinuousDistribution, HasDensity<Double> { 33dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** 34dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Modify the shape parameter, alpha. 35dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param alpha the new shape parameter. 36dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @deprecated as of v2.1 37dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 38dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond @Deprecated 39dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond void setAlpha(double alpha); 40dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 41dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** 42dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Access the shape parameter, alpha 43dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @return alpha. 44dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 45dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond double getAlpha(); 46dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 47dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** 48dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Modify the scale parameter, beta. 49dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param beta the new scale parameter. 50dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @deprecated as of v2.1 51dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 52dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond @Deprecated 53dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond void setBeta(double beta); 54dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 55dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** 56dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Access the scale parameter, beta 57dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @return beta. 58dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 59dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond double getBeta(); 60dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 61dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** 62dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Return the probability density for a particular point. 63dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param x The point at which the density should be computed. 64dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @return The pdf at point x. 65dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 66dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond double density(Double x); 67dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond} 68