functionminimisationerror.java

来自「人工智能带有xml文件的微粒群算法的java库程序包 可以直接运行时导入」· Java 代码 · 共 49 行

/*
 * FunctionMinimisationError.java
 *
 * Created on February 4, 2003, 8:03 PM
 *
 * 
 * Copyright (C) 2003 - Edwin S. Peer 
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
 *   
 */

package net.sourceforge.cilib.Measurement;

import net.sourceforge.cilib.Algorithm.*;
import net.sourceforge.cilib.Problem.*;

/**
 *
 * @author  espeer
 */
public class FunctionMinimisationError implements Measurement {
    
    /** Creates a new instance of FunctionMinimisationError */
    public FunctionMinimisationError() {
    }
    
    public Number getValue(Algorithm algorithm) {
        OptimisationAlgorithm optAlgorithm = (OptimisationAlgorithm) algorithm;
        FunctionMinimisationProblem problem = 
            (FunctionMinimisationProblem) optAlgorithm.getOptimisationProblem();    
        
        return new Double(problem.getError(optAlgorithm.getSolution()));
    }
    
}