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    package org.apache.commons.math.distribution;
018    
019    /**
020     * Computes the cumulative, inverse cumulative and density functions for the beta distribuiton.
021     *
022     * @see <a href="http://en.wikipedia.org/wiki/Beta_distribution">Beta_distribution</a>
023     * @version $Id: BetaDistribution.java 1131229 2011-06-03 20:49:25Z luc $
024     * @since 2.0
025     */
026    public interface BetaDistribution extends ContinuousDistribution {
027         /**
028          * Access the alpha shape parameter.
029          *
030          * @return alpha.
031          */
032         double getAlpha();
033    
034         /**
035          * Access the beta shape parameter.
036          *
037          * @return beta.
038          */
039         double getBeta();
040    }