net.sf.cpsolver.coursett
Class TimetableSolver

java.lang.Object
  net.sf.cpsolver.ifs.solver.Solver
      net.sf.cpsolver.coursett.TimetableSolver

public class TimetableSolver
extends Solver

University course timetabling solver.

When a complete solution is found, it is improved by limited depth backtracking search. This way it is ensured that the fund solution is at least locally optimal.

Version:

CourseTT 1.1 (University Course Timetabling)
Copyright (C) 2006 Tomáš Müller
muller@unitime.org
Lazenska 391, 76314 Zlin, Czech Republic

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 2.1 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Nested Class Summary

Nested classes/interfaces inherited from class net.sf.cpsolver.ifs.solver.Solver

Solver.SolverThread

Field Summary

Fields inherited from class net.sf.cpsolver.ifs.solver.Solver

iCurrentSolution, iLastSolution, iSolverThread, iStop, sLogger, THREAD_PRIORITY

Constructor Summary

TimetableSolver(DataProperties properties)

Method Summary

protected void	fixCompleteSolution(double startTime) Try to improve existing solution by backtracking search of very limited depth.
protected void	onAssigned(double startTime) Called in each iteration, after a neighbour is assigned

Methods inherited from class net.sf.cpsolver.ifs.solver.Solver

addExtension, addSolverListener, autoConfigure, clearBest, currentSolution, dispose, getExtensions, getNeighbourSelection, getPerturbationsCounter, getProperties, getSolutionComparator, getSolverListeners, getSolverThread, getTerminationCondition, init, initSolver, isRunning, lastSolution, onFailure, onFinish, onStart, onStop, removeSolverListener, setInitalSolution, setInitalSolution, setNeighbourSelection, setPerturbationsCounter, setSolutionComparator, setTerminalCondition, setUpdateProgress, start, stopSolver

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TimetableSolver

public TimetableSolver(DataProperties properties)

Method Detail

onAssigned

protected void onAssigned(double startTime)

Description copied from class: Solver

Called in each iteration, after a neighbour is assigned

Overrides:

onAssigned in class Solver

fixCompleteSolution

protected void fixCompleteSolution(double startTime)

Try to improve existing solution by backtracking search of very limited depth. See NeighbourSelectionWithSuggestions for more details.