org.cpsolver.studentsct.heuristics.selection

Class RandomUnassignmentSelection.UnassignStudentNeighbour

java.lang.Object

org.cpsolver.studentsct.heuristics.selection.RandomUnassignmentSelection.UnassignStudentNeighbour

All Implemented Interfaces:

Neighbour<Request,Enrollment>

Enclosing class:

RandomUnassignmentSelection

public static class RandomUnassignmentSelection.UnassignStudentNeighbour
extends Object
implements Neighbour<Request,Enrollment>

Unassignment of all requests of a student

Constructor Summary

Constructors

Constructor and Description
UnassignStudentNeighbour(Student student, Assignment<Request,Enrollment> assignment, Request.RequestPriority priority) Constructor

Method Summary

Modifier and Type	Method and Description
void	assign(Assignment<Request,Enrollment> assignment, long iteration) All requests of the given student are unassigned
Map<Request,Enrollment>	assignments() Return assignments to be done.
boolean	canUnassign(Enrollment enrollment) Check if the given enrollment can be unassigned
String	toString()
double	value(Assignment<Request,Enrollment> assignment) Difference in the evaluation function, if this neighnour is assigned.

Methods inherited from class java.lang.Object

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

Constructor Detail

UnassignStudentNeighbour

public UnassignStudentNeighbour(Student student,
                                Assignment<Request,Enrollment> assignment,
                                Request.RequestPriority priority)

Constructor

Parameters:

student - a student to be unassigned

Method Detail

canUnassign

public boolean canUnassign(Enrollment enrollment)

Check if the given enrollment can be unassigned

Parameters:

enrollment - given enrollment

Returns:

if running MPP, do not unassign initial enrollments

value

public double value(Assignment<Request,Enrollment> assignment)

Description copied from interface: Neighbour

Difference in the evaluation function, if this neighnour is assigned.

Specified by:

value in interface Neighbour<Request,Enrollment>

Parameters:

assignment - current assignment

Returns:

difference in the solution value when assigned

assign

public void assign(Assignment<Request,Enrollment> assignment,
                   long iteration)

All requests of the given student are unassigned

Specified by:

assign in interface Neighbour<Request,Enrollment>

Parameters:

assignment - current assignment

iteration - current iteration

toString

public String toString()

Overrides:

toString in class Object

assignments

public Map<Request,Enrollment> assignments()

Description copied from interface: Neighbour

Return assignments to be done.

Specified by:

assignments in interface Neighbour<Request,Enrollment>

Returns:

list of assignments (including unassignments) of this neighbour