attributevector.java

著名的开源仿真软件yale

/*
 *  YALE - Yet Another Learning Environment
 *  Copyright (C) 2002, 2003
 *      Simon Fischer, Ralf Klinkenberg, Ingo Mierswa, 
 *          Katharina Morik, Oliver Ritthoff
 *      Artificial Intelligence Unit
 *      Computer Science Department
 *      University of Dortmund
 *      44221 Dortmund,  Germany
 *  email: [e-mail]
 *  web:   http://yale.cs.uni-dortmund.de/
 *
 *  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 edu.udo.cs.yale.example;

import edu.udo.cs.yale.operator.ResultObjectAdapter;

import java.awt.Component;
import javax.swing.JLabel;
import java.util.*;

/** Container class for <code>AttributeCounter</code>s.
 *
 *  @author ingo
 *  @version $Id: AttributeVector.java,v 2.1 2003/04/04 11:59:24 fischer Exp $
 */
public class AttributeVector extends ResultObjectAdapter {
    
    private Hashtable attributeCounters;

    public AttributeVector() {
	this.attributeCounters = new Hashtable();
    }

    /** Each time this method is called, the associated attribute counter is searched (or
     *  constructed if necessary) and its counter is increased by one. */
    public void countAttribute(Attribute attribute) {
	AttributeCounter counter = (AttributeCounter)attributeCounters.get(attribute.getConstructionDescription());

	if (counter == null) 
	    attributeCounters.put(attribute.getConstructionDescription(), new AttributeCounter(attribute));
	else 
	    counter.incrementCounter();
    }

    public String toString() {
	int numberOfAllAttributes = 0;
	LinkedList result = new LinkedList();
	Enumeration enum = attributeCounters.elements();
	while (enum.hasMoreElements()) {
	    AttributeCounter counter = (AttributeCounter)enum.nextElement();
	    numberOfAllAttributes += counter.getUseCount();
	    result.add(counter);
	}
	
	Collections.sort(result);
	
	String resultString = "Selected attributes:\n[ ";
	ListIterator i = result.listIterator();
	while (i.hasNext()) {
	    AttributeCounter counter = (AttributeCounter)i.next();
	    resultString += counter.getAttribute().getConstructionDescription() + ": " + counter.getUseCount() + 
		" (" + Math.round(((double)counter.getUseCount() / (double)numberOfAllAttributes) * 100) + "%)";
	    if (i.hasNext()) resultString += ", ";
	    else resultString += " ]";
	}

	return resultString;
    }

}