| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.math.distribution; |
| |
| |
| /** |
| * Base interface for discrete distributions. |
| * |
| * @version $Revision: 811685 $ $Date: 2009-09-05 19:36:48 +0200 (sam. 05 sept. 2009) $ |
| */ |
| public interface DiscreteDistribution extends Distribution { |
| /** |
| * For a random variable X whose values are distributed according |
| * to this distribution, this method returns P(X = x). In other words, this |
| * method represents the probability mass function, or PMF for the distribution. |
| * |
| * @param x the value at which the probability mass function is evaluated. |
| * @return the value of the probability mass function at x |
| */ |
| double probability(double x); |
| } |