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 */
17package org.apache.commons.math.distribution;
18
19import org.apache.commons.math.MathException;
20
21/**
22 * Computes the cumulative, inverse cumulative and density functions for the beta distribuiton.
23 *
24 * @see <a href="http://en.wikipedia.org/wiki/Beta_distribution">Beta_distribution</a>
25 * @version $Revision: 920852 $ $Date: 2010-03-09 13:53:44 +0100 (mar. 09 mars 2010) $
26 * @since 2.0
27 */
28public interface BetaDistribution extends ContinuousDistribution, HasDensity<Double> {
29    /**
30     * Modify the shape parameter, alpha.
31     * @param alpha the new shape parameter.
32     * @deprecated as of 2.1
33     */
34    @Deprecated
35    void setAlpha(double alpha);
36
37     /**
38      * Access the shape parameter, alpha
39      * @return alpha.
40      */
41     double getAlpha();
42
43     /**
44      * Modify the shape parameter, beta.
45      * @param beta the new scale parameter.
46      * @deprecated as of 2.1
47      */
48     @Deprecated
49     void setBeta(double beta);
50
51     /**
52      * Access the shape parameter, beta
53      * @return beta.
54      */
55     double getBeta();
56
57     /**
58      * Return the probability density for a particular point.
59      * @param x  The point at which the density should be computed.
60      * @return  The pdf at point x.
61      * @exception MathException if probability density cannot be computed
62      */
63     double density(Double x) throws MathException;
64
65}
66