net.sf.cpsolver.coursett.heuristics
Class TimetableComparator

java.lang.Object
  extended by net.sf.cpsolver.ifs.solution.GeneralSolutionComparator<Lecture,Placement>
      extended by net.sf.cpsolver.coursett.heuristics.TimetableComparator
All Implemented Interfaces:
SolutionComparator<Lecture,Placement>

Deprecated.

@Deprecated
public class TimetableComparator
extends GeneralSolutionComparator<Lecture,Placement>

Timetable (solution) comparator.

The quality of a solution is expressed as a weighted sum combining soft time and classroom preferences, satisfied soft group constrains and the total number of student conflicts. This allows us to express the importance of different types of soft constraints.

The solution comparator prefers a more complete solution (with a smaller number of unassigned variables) and a solution with a smaller number of perturbations among solutions with the same number of unassigned variables. If both solutions have the same number of unassigned variables and perturbations, the solution of better quality is selected.

Parameters:

Parameter Type Comment
Comparator.HardStudentConflictWeight Double Weight of hard student conflict (conflict between single-section classes)
Comparator.StudentConflictWeight Double Weight of student conflict
Comparator.TimePreferenceWeight Double Time preferences weight
Comparator.ContrPreferenceWeight Double Group constraint preferences weight
Comparator.RoomPreferenceWeight Double Room preferences weight
Comparator.UselessSlotWeight Double Useless slots weight
Comparator.TooBigRoomWeight Double Too big room weight
Comparator.DistanceInstructorPreferenceWeight Double Distance (of the rooms of the back-to-back classes) based instructor preferences weight
Comparator.PerturbationPenaltyWeight Double Perturbation penalty (see UniversalPerturbationsCounter)
Comparator.DeptSpreadPenaltyWeight Double Department balancing penalty (see DepartmentSpreadConstraint)

Version:
CourseTT 1.2 (University Course Timetabling)
Copyright (C) 2006 - 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
TimetableComparator(DataProperties properties)
          Deprecated.  
 
Method Summary
 double currentValue(Solution<Lecture,Placement> currentSolution)
          Deprecated. 
 double getBest(Solution<Lecture,Placement> currentSolution)
          Deprecated. 
 
Methods inherited from class net.sf.cpsolver.ifs.solution.GeneralSolutionComparator
isBetterThanBestSolution
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TimetableComparator

public TimetableComparator(DataProperties properties)
Deprecated. 
Method Detail

currentValue

@Deprecated
public double currentValue(Solution<Lecture,Placement> currentSolution)
Deprecated. 

Use Model.getTotalValue() instead.


getBest

@Deprecated
public double getBest(Solution<Lecture,Placement> currentSolution)
Deprecated. 

Use Solution.getBestValue() instead.



Copyright © 2014 UniTime LLC. All Rights Reserved.