net.sf.cpsolver.studentsct.heuristics
Class RouletteWheelRequestSelection

java.lang.Object
  extended by net.sf.cpsolver.studentsct.heuristics.RouletteWheelRequestSelection
All Implemented Interfaces:
VariableSelection<Request,Enrollment>

public class RouletteWheelRequestSelection
extends Object
implements VariableSelection<Request,Enrollment>

Variable (Request) selection using RouletteWheelSelection. Unassigned request has 10 points, an assigned request has 1 point for each section that exceeds its bound.

Version:
StudentSct 1.2 (Student Sectioning)
Copyright (C) 2007 - 2010 Tomas Muller
muller@unitime.org
http://muller.unitime.org

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This library 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not see http://www.gnu.org/licenses/.

Constructor Summary
RouletteWheelRequestSelection(DataProperties properties)
          Constructor
 
Method Summary
protected  RouletteWheelSelection<Request> getRoulette(Solution<Request,Enrollment> solution)
          Populate roulette wheel selection, if null or empty.
 void init(Solver<Request,Enrollment> solver)
          Initialization
 Request selectVariable(Solution<Request,Enrollment> solution)
          Variable selection.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

RouletteWheelRequestSelection

public RouletteWheelRequestSelection(DataProperties properties)
Constructor

Parameters:
properties - configuration
Method Detail

init

public void init(Solver<Request,Enrollment> solver)
Initialization

Specified by:
init in interface VariableSelection<Request,Enrollment>

getRoulette

protected RouletteWheelSelection<Request> getRoulette(Solution<Request,Enrollment> solution)
Populate roulette wheel selection, if null or empty.


selectVariable

public Request selectVariable(Solution<Request,Enrollment> solution)
Variable selection. RouletteWheelSelection is used. Unassigned request has 10 points, an assigned request has 1 point for each section that exceeds its bound.

Specified by:
selectVariable in interface VariableSelection<Request,Enrollment>
Parameters:
solution - current solution


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