net.sf.cpsolver.coursett.criteria
Class UselessHalfHours

java.lang.Object
  extended by net.sf.cpsolver.ifs.criteria.AbstractCriterion<Lecture,Placement>
      extended by net.sf.cpsolver.coursett.criteria.TimetablingCriterion
          extended by net.sf.cpsolver.coursett.criteria.BrokenTimePatterns
              extended by net.sf.cpsolver.coursett.criteria.UselessHalfHours
All Implemented Interfaces:
Criterion<Lecture,Placement>, InfoProvider<Lecture>, ModelListener<Lecture,Placement>

public class UselessHalfHours
extends BrokenTimePatterns

Useless half-hours. This criterion counts cases when there is an empty half hour in a room. Such half-hours should be generally avoided as usually any class takes more than half an hour.

Version:
CourseTT 1.2 (University Course Timetabling)
Copyright (C) 2006 - 2011 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/.

Nested Class Summary
 
Nested classes/interfaces inherited from class net.sf.cpsolver.ifs.criteria.AbstractCriterion
AbstractCriterion.ValueUpdateType
 
Field Summary
 
Fields inherited from class net.sf.cpsolver.ifs.criteria.AbstractCriterion
iBest, iDebug, iValue, iValueUpdateType, iWeight, sDoubleFormat, sPercentFormat
 
Constructor Summary
UselessHalfHours()
           
 
Method Summary
static int countUselessSlotsHalfHours(RoomConstraint rc)
          Number of useless slots for this room
protected static int countUselessSlotsHalfHours(RoomConstraint rc, TimeLocation time)
          Number of useless half hours for this room
 String getPlacementSelectionWeightName()
           
 double getWeightDefault(DataProperties config)
          Defines default weight (when AbstractCriterion.getWeightName() parameter is not present in the criterion).
protected  int penalty(RoomConstraint rc)
           
protected  int penalty(RoomConstraint rc, TimeLocation value)
           
 
Methods inherited from class net.sf.cpsolver.coursett.criteria.BrokenTimePatterns
computeBounds, countUselessSlotsBrokenTimePatterns, countUselessSlotsBrokenTimePatterns, getBounds, getValue, getValue, penalty
 
Methods inherited from class net.sf.cpsolver.coursett.criteria.TimetablingCriterion
getPlacementSelectionWeight, getPlacementSelectionWeightDefault, init
 
Methods inherited from class net.sf.cpsolver.ifs.criteria.AbstractCriterion
afterAssigned, afterUnassigned, beforeAssigned, beforeUnassigned, bestRestored, bestSaved, clearCache, constraintAdded, constraintRemoved, getBest, getBounds, getInfo, getInfo, getModel, getName, getPerc, getPercRev, getValue, getWeight, getWeightedBest, getWeightedValue, getWeightedValue, getWeightedValue, getWeightName, inc, variableAdded, variableRemoved
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

UselessHalfHours

public UselessHalfHours()
Method Detail

getWeightDefault

public double getWeightDefault(DataProperties config)
Description copied from class: AbstractCriterion
Defines default weight (when AbstractCriterion.getWeightName() parameter is not present in the criterion).

Overrides:
getWeightDefault in class BrokenTimePatterns

getPlacementSelectionWeightName

public String getPlacementSelectionWeightName()
Overrides:
getPlacementSelectionWeightName in class BrokenTimePatterns

penalty

protected int penalty(RoomConstraint rc)
Overrides:
penalty in class BrokenTimePatterns

penalty

protected int penalty(RoomConstraint rc,
                      TimeLocation value)
Overrides:
penalty in class BrokenTimePatterns

countUselessSlotsHalfHours

protected static int countUselessSlotsHalfHours(RoomConstraint rc,
                                                TimeLocation time)
Number of useless half hours for this room


countUselessSlotsHalfHours

public static int countUselessSlotsHalfHours(RoomConstraint rc)
Number of useless slots for this room



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