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java.lang.Objectnet.sf.cpsolver.ifs.criteria.AbstractCriterion<Exam,ExamPlacement>
net.sf.cpsolver.exam.criteria.ExamCriterion
net.sf.cpsolver.exam.criteria.StudentDistanceBackToBackConflicts
public class StudentDistanceBackToBackConflicts
Number of back-to-back distance student conflicts. I.e., number of
cases when an exam is attended by a student that attends some other
exam at the previous ExamPeriod.prev()
or following
ExamPeriod.next()
period and the distance
ExamPlacement.getDistanceInMeters(ExamPlacement)
between these two exams
is greater than ExamModel.getBackToBackDistance()
. Distance
back-to-back conflicts are only considered between consecutive periods
that are of the same day.
Distance back-to-back student conflict weight can be set by problem
property Exams.DistanceBackToBackConflictWeight, or in the
input xml file, property distanceBackToBackConflictWeight.
Nested Class Summary |
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Nested classes/interfaces inherited from class net.sf.cpsolver.ifs.criteria.AbstractCriterion |
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AbstractCriterion.ValueUpdateType |
Field Summary |
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Fields inherited from class net.sf.cpsolver.ifs.criteria.AbstractCriterion |
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iBest, iDebug, iValue, iValueUpdateType, iWeight, sDoubleFormat, sPercentFormat |
Constructor Summary | |
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StudentDistanceBackToBackConflicts()
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Method Summary | |
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double |
getBackToBackDistance()
Back-to-back distance. |
void |
getInfo(Map<String,String> info)
Adds some information into the table with information about the solution |
String |
getName()
Criterion name |
double |
getValue(ExamPlacement value,
Set<ExamPlacement> conflicts)
Value of a proposed assignment (including hard conflicts) |
double |
getWeightDefault(DataProperties config)
Defines default weight (when AbstractCriterion.getWeightName() parameter is not present in the criterion). |
String |
getWeightName()
Defines weight name (to be used to get the criterion weight from the configuration). |
void |
getXmlParameters(Map<String,String> params)
Put all the parameters of this criterion into a map that is used to write parameters section of the examination XML file. |
String |
getXmlWeightName()
Name of the weight parameter in the parameters section of the examination XML file. |
boolean |
init(Solver<Exam,ExamPlacement> solver)
Notification that the model was initialized by the solver. |
boolean |
isPeriodCriterion()
True if this criterion is based on period assignment. |
void |
setBackToBackDistance(double backToBackDistance)
Back-to-back distance. |
void |
setXmlParameters(Map<String,String> params)
Set all the parameters of this criterion from a map that is read from the parameters section the examination XML file. |
String |
toString()
|
Methods inherited from class net.sf.cpsolver.exam.criteria.ExamCriterion |
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getBounds, getPeriodValue, getRoomValue, isRoomCriterion, setWeight |
Methods inherited from class net.sf.cpsolver.ifs.criteria.AbstractCriterion |
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afterAssigned, afterUnassigned, beforeAssigned, beforeUnassigned, bestRestored, bestSaved, clearCache, computeBounds, constraintAdded, constraintRemoved, getBest, getBounds, getInfo, getModel, getPerc, getPercRev, getValue, getValue, getWeight, getWeightedBest, getWeightedValue, getWeightedValue, getWeightedValue, inc, variableAdded, variableRemoved |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public StudentDistanceBackToBackConflicts()
Method Detail |
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public boolean init(Solver<Exam,ExamPlacement> solver)
ModelListener
init
in interface ModelListener<Exam,ExamPlacement>
init
in class AbstractCriterion<Exam,ExamPlacement>
solver
- IFS solverpublic String getWeightName()
AbstractCriterion
getWeightName
in class ExamCriterion
public String getXmlWeightName()
ExamCriterion
getXmlWeightName
in class ExamCriterion
public double getWeightDefault(DataProperties config)
AbstractCriterion
AbstractCriterion.getWeightName()
parameter is not present in the criterion).
getWeightDefault
in class AbstractCriterion<Exam,ExamPlacement>
public double getBackToBackDistance()
public void setBackToBackDistance(double backToBackDistance)
public void getXmlParameters(Map<String,String> params)
ExamCriterion
getXmlParameters
in class ExamCriterion
public void setXmlParameters(Map<String,String> params)
ExamCriterion
setXmlParameters
in class ExamCriterion
public double getValue(ExamPlacement value, Set<ExamPlacement> conflicts)
Criterion
public String getName()
Criterion
getName
in interface Criterion<Exam,ExamPlacement>
getName
in class AbstractCriterion<Exam,ExamPlacement>
public void getInfo(Map<String,String> info)
InfoProvider
getInfo
in interface InfoProvider<Exam>
getInfo
in class ExamCriterion
public String toString()
toString
in class Object
public boolean isPeriodCriterion()
ExamCriterion
ExamPlacement.getTimeCost()
.
isPeriodCriterion
in class ExamCriterion
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