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Java example source code file (TiesStrategy.java)

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

Learn more about this Java project at its project page.

Java - Java tags/keywords

average, maximum, minimum, random, sequential, tiesstrategy

The TiesStrategy.java Java example 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
 *
 *      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.math3.stat.ranking;

/**
 * Strategies for handling tied values in rank transformations.
 * <ul>
 * <li>SEQUENTIAL - Ties are assigned ranks in order of occurrence in the original array,
 * for example (1,3,4,3) is ranked as (1,2,4,3)</li>
 * <li>MINIMUM - Tied values are assigned the minimum applicable rank, or the rank
 * of the first occurrence. For example, (1,3,4,3) is ranked as (1,2,4,2)</li>
 * <li>MAXIMUM - Tied values are assigned the maximum applicable rank, or the rank
 * of the last occurrence. For example, (1,3,4,3) is ranked as (1,3,4,3)</li>
 * <li>AVERAGE - Tied values are assigned the average of the applicable ranks.
 * For example, (1,3,4,3) is ranked as (1,2.5,4,2.5)</li>
 * <li>RANDOM - Tied values are assigned a random integer rank from among the
 * applicable values. The assigned rank will always be an integer, (inclusively)
 * between the values returned by the MINIMUM and MAXIMUM strategies.</li>
 * </ul>
 *
 * @since 2.0
 */
public enum TiesStrategy {

    /** Ties assigned sequential ranks in order of occurrence */
    SEQUENTIAL,

    /** Ties get the minimum applicable rank */
    MINIMUM,

    /** Ties get the maximum applicable rank */
    MAXIMUM,

    /** Ties get the average of applicable ranks */
    AVERAGE,

    /** Ties get a random integral value from among applicable ranks */
    RANDOM
}

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