This instance is from the city of Patras in the year 2008. The instance was provided by the Headship of Second Grade Education of Achaia county; the school the instance belongs to, is not disclosed.
The instance was converted to XHSTT by Ioannis Tassopoulos and Grigorios Beligiannis from their own format.
A summary of the data can be found in the following table:
Assets | Times | Teachers | Rooms | Students | Classes | # events | Total duration |
value | 35 | 19 | - | - | 12 | 262 | 262 |
The following constraints are present:
- Scheduling constraints: AssignTimeConstraint.
- Event constraints: SpreadEventsConstraint and LinkEventsConstraint.
- Resource constraints: AvoidClashesConstraint, AvoidUnavailableTimesConstraint, LimitIdleTimesConstraint, and LimitBusyTimesConstraint.
The following feasible solutions are submitted for this instance:
SolutionGroup | Objective value | Lowerbound | Submitte by | Received |
TassopoulosAndBeligiannis_2011-12-06 | 8 | - | Ioannis Tassopoulos and Grigorios Beligiannis | December 6, 2011 |
TassopoulosAndBeligiannis_2014-04-26 | 4 | - | Ioannis Tassopoulos and Grigorios Beligiannis | April 26, 2014 |
GOAL team - Feb 12, 2015 | 3 | - | UFOP-GOAL team: Fonseca G.H.G. Santos H.G. and Carrano E.G. | February 23, 2015 |
LectioIntegerProgramming | - | 3 | Matias Sørensen | November 11, 2015 |
XML files
WesternGreeceUniversityInstance4.xml (instance and solution)
previous versions:
GreeceWesternGreeceUniversityInstance4.xml (XHSTT2013)
[Update to 2014: cost function simplified.]