001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018 package org.apache.commons.math.distribution; 019 020 /** 021 * Weibull Distribution. This interface defines the two parameter form of the 022 * distribution as defined by 023 * <a href="http://mathworld.wolfram.com/WeibullDistribution.html"> 024 * Weibull Distribution</a>, equations (1) and (2). 025 * 026 * <p> 027 * References: 028 * <ul> 029 * <li><a href="http://mathworld.wolfram.com/WeibullDistribution.html"> 030 * Weibull Distribution</a></li> 031 * </ul> 032 * </p> 033 * 034 * @since 1.1 035 * @version $Revision: 920852 $ $Date: 2010-03-09 13:53:44 +0100 (mar. 09 mars 2010) $ 036 */ 037 public interface WeibullDistribution extends ContinuousDistribution { 038 039 /** 040 * Access the shape parameter. 041 * @return the shape parameter. 042 */ 043 double getShape(); 044 045 /** 046 * Access the scale parameter. 047 * @return the scale parameter. 048 */ 049 double getScale(); 050 051 /** 052 * Modify the shape parameter. 053 * @param alpha The new shape parameter value. 054 * @deprecated as of v2.1 055 */ 056 @Deprecated 057 void setShape(double alpha); 058 059 /** 060 * Modify the scale parameter. 061 * @param beta The new scale parameter value. 062 * @deprecated as of v2.1 063 */ 064 @Deprecated 065 void setScale(double beta); 066 }