org.cpsolver.exam.split

Class ExamSplitMoves.ExamShuffleNeighbour

java.lang.Object

org.cpsolver.exam.split.ExamSplitMoves.ExamShuffleNeighbour

All Implemented Interfaces:

Neighbour<Exam,ExamPlacement>

Enclosing class:

ExamSplitMoves

protected class ExamSplitMoves.ExamShuffleNeighbour
extends Object
implements Neighbour<Exam,ExamPlacement>

Shuffle students between the parent exam and all of its children. Only swaps that are decreasing the weighted sum of student conflicts are considered.

Constructor Summary

Constructors

Constructor and Description
ExamShuffleNeighbour(Assignment<Exam,ExamPlacement> assignment, Exam exam) Exam to be shuffled.

Method Summary

Modifier and Type	Method and Description
void	assign(Assignment<Exam,ExamPlacement> assignment, long iteration) Perform the shuffle.
Map<Exam,ExamPlacement>	assignments() Return assignments to be done.
Exam	exam() Exam to be shuffled.
double	value(Assignment<Exam,ExamPlacement> assignment) Value of the shuffle.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExamShuffleNeighbour

public ExamShuffleNeighbour(Assignment<Exam,ExamPlacement> assignment,
                            Exam exam)

Exam to be shuffled.

Parameters:

assignment - current exam

exam - child exam to be shuffled

Method Detail

assign

public void assign(Assignment<Exam,ExamPlacement> assignment,
                   long iteration)

Perform the shuffle.

Specified by:

assign in interface Neighbour<Exam,ExamPlacement>

Parameters:

assignment - current assignment

iteration - current iteration

value

public double value(Assignment<Exam,ExamPlacement> assignment)

Value of the shuffle. This is the weighted sum of all student conflicts that will be removed by the shuffle.

Specified by:

value in interface Neighbour<Exam,ExamPlacement>

Parameters:

assignment - current assignment

Returns:

difference in the solution value when assigned

exam

public Exam exam()

Exam to be shuffled.

Returns:

exam to be shuffled

assignments

public Map<Exam,ExamPlacement> assignments()

Description copied from interface: Neighbour

Return assignments to be done.

Specified by:

assignments in interface Neighbour<Exam,ExamPlacement>

Returns:

list of assignments (including unassignments) of this neighbour