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Commons Math example source code file (

This example Commons Math source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Math tags/keywords

rankingalgorithm, rankingalgorithm

The Commons Math source code

 * 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.commons.math.stat.ranking;

 * Interface representing a rank transformation.
 * @since 2.0
 * @version $Revision: 811685 $ $Date: 2009-09-05 13:36:48 -0400 (Sat, 05 Sep 2009) $
public interface RankingAlgorithm {
     * <p>Performs a rank transformation on the input data, returning an array
     * of ranks.</p>
     * <p>Ranks should be 1-based - that is, the smallest value
     * returned in an array of ranks should be greater than or equal to one,
     * rather than 0. Ranks should in general take integer values, though
     * implementations may return averages or other floating point values
     * to resolve ties in the input data.</p>
     * @param data array of data to be ranked
     * @return an array of ranks corresponding to the elements of the input array
    double[] rank (double[] data);

Other Commons Math examples (source code examples)

Here is a short list of links related to this Commons Math source code file:

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