Parameter 
Type 
Comment 
Perturbations.DifferentPlacement 
Double 
Different value than initial is assigned 
Perturbations.AffectedStudentWeight 
Double 
Number of students which are enrolled in a class which is placed to a
different location than initial (a student can be included twice or more) 
Perturbations.AffectedInstructorWeight 
Double 
Number of instructors which are assigned to classes which are placed to
different locations than initial (an instructor can be included twice or
more) 
Perturbations.DifferentRoomWeight 
Double 
Number of classes which are placed to a different room than initial 
Perturbations.DifferentBuildingWeight 
Double 
Number of classes which are placed to a different building than initial 
Perturbations.DifferentTimeWeight 
Double 
Number of classes which are placed in a different time than initial 
Perturbations.DifferentDayWeight 
Double 
Number of classes which are placed in a different days than initial 
Perturbations.DifferentHourWeight 
Double 
Number of classes which are placed in a different hours than initial 
Perturbations.DeltaStudentConflictsWeight 
Double 
Difference of student conflicts of classes assigned to current placements
instead of initial placements. It is a difference between number of students
conflicts which are in the initial solution and the current one. Student
conflicts created by classes without initial placement are not taken into
account 
Perturbations.NewStudentConflictsWeight 
Double 
New created student conflicts  particular students are taken into
account. Student conflicts created by classes without initial placement are
not taken into account 
Perturbations.TooFarForInstructorsWeight 
Double 
New placement of a class is too far from the intial placement
(instructorwise). It is computed only when the class has an instructor
assigned, moreover:
 0 < distance(currentPlacement,initialPlacement) <= 5 .. weight is taken
once
 5 < distance(currentPlacement,initialPlacement) <= 20 .. weight is taken
twice
 20 < distance(currentPlacement,initialPlacement) .. weight is taken ten
times

Perturbations.TooFarForStudentsWeight 
Double 
New placement of a class is too far from the intial placement
(instructorstudent). It is weighted by the number of students enrolled in
the class when distance(currentPlacement,initialPlacement) > 67 
Perturbations.DeltaInstructorDistancePreferenceWeight 
Double 
Difference between number of instructor distance preferences of the
initial (but maybe inconsistent) solution and the current solution.
Instructor distance preferences of classes without initial placement are not
taken into account 
Perturbations.DeltaRoomPreferenceWeight 
Double 
Difference between room preferences of the initial and the current
solution. Room preferences of classes without initial placement are not taken
into account 
Perturbations.DeltaTimePreferenceWeight 
Double 
Difference between time preferences of the initial and the current
solution. Time preferences of classes without initial placement are not taken
into account 
Perturbations.AffectedStudentByTimeWeight 
Double 
Number of students which are enrolled in a class which is placed to a
different time than initial 
Perturbations.AffectedInstructorByTimeWeight 
Double 
Number of instructors which are assigned to classes which are placed to
different time than initial 
Perturbations.AffectedStudentByRoomWeight 
Double 
Number of students which are enrolled in a class which is placed to a
different room than initial 
Perturbations.AffectedInstructorByRoomWeight 
Double 
Number of instructors which are assigned to classes which are placed to
different room than initial 
Perturbations.AffectedStudentByBldgWeight 
Double 
Number of students which are enrolled in a class which is placed to a
different building than initial 
Perturbations.AffectedInstructorByBldgWeight 
Double 
Number of instructors which are assigned to classes which are placed to
different building than initial 