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Java example source code file (Chromosome.java)
The Chromosome.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.genetics; /** * Individual in a population. Chromosomes are compared based on their fitness. * <p> * The chromosomes are IMMUTABLE, and so their fitness is also immutable and * therefore it can be cached. * * @since 2.0 */ public abstract class Chromosome implements Comparable<Chromosome>,Fitness { /** Value assigned when no fitness has been computed yet. */ private static final double NO_FITNESS = Double.NEGATIVE_INFINITY; /** Cached value of the fitness of this chromosome. */ private double fitness = NO_FITNESS; /** * Access the fitness of this chromosome. The bigger the fitness, the better the chromosome. * <p> * Computation of fitness is usually very time-consuming task, therefore the fitness is cached. * * @return the fitness */ public double getFitness() { if (this.fitness == NO_FITNESS) { // no cache - compute the fitness this.fitness = fitness(); } return this.fitness; } /** * Compares two chromosomes based on their fitness. The bigger the fitness, the better the chromosome. * * @param another another chromosome to compare * @return * <ul> * <li>-1 if Other Java examples (source code examples)Here is a short list of links related to this Java Chromosome.java source code file: |
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