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10 items by relevance
1 PhD Thesis

Timetabling at High Schools

Sørensen, Matias

DTU Management Engineering — 2013

High school institutions face a number of important planning problems during each schoolyear. This Ph.D. thesis considers two of these planning problems: The High School Timetabling Problem (HSTP) and the Consultation Timetabling Problem (CTP). Furthermore a framework for handling various planning

Year: 2013

Language: English

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2 Journal article

The consultation timetabling problem at Danish high schools

Kristiansen, Simon; Sørensen, Matias; Herold, Michald B.; Stidsen, Thomas Riis

Journal of Heuristics — 2013, Volume 19, Issue 3, pp. 465-495

In the different stages of the educational system, the demand for efficient planning is increasing. This article treats the $$\mathcal NP $$ NP -hard Consultation Timetabling Problem, a recurrent planning problem for the high schools in Denmark, which has not been described in the literature before

Year: 2013

Language: English

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3 Journal article

Integer programming for the generalized high school timetabling problem

Kristiansen, Simon; Sørensen, Matias; Stidsen, Thomas Riis

Journal of Scheduling — 2015, Volume 18, Issue 4, pp. 377-392

Recently, the XHSTT format for high school timetabling was introduced. It provides a uniform way of modeling problem instances and corresponding solutions. The format supports a wide variety of constraints, and currently 38 real-life instances from 11 different countries are available. Thereby

Year: 2015

Language: English

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4 Conference paper

Integer Programming for the Generalized (High) School Timetabling Problem

Kristiansen, Simon; Sørensen, Matias; Stidsen, Thomas Riis

Proceedings of the 10th International Conference on the Practice and Theory of Automated Timetabling — 2014

Year: 2014

Language: English

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5 Conference paper

Hybridizing Integer Programming and Metaheuristics for Solving High School Timetabling

Sørensen, Matias; Stidsen, Thomas Riis

Proceedings of the 10th International Conference on the Practice and Theory of Automated Timetabling — 2014, pp. 557-560

Year: 2014

Language: English

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6 Report

Comparing Solution Approaches for a Complete Model of High School Timetabling

Sørensen, Matias; Stidsen, Thomas Riis

A complex model of high school timetabling is presented, which originates from the problem-setting in the timetabling software of the online high school ERPsystem Lectio. An Integer Programming formulation is described in detail, and a twostage decomposition is suggested. It is proven that both

Year: 2013

Language: English

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7 Conference paper

High School Timetabling: Modeling and solving a large number of cases in Denmark

Sørensen, Matias; Stidsen, Thomas Riis

Proceedings of the Ninth International Conference on the Practice and Theory of Automated Timetabling (patat 2012) — 2012, pp. 359-364

A general model for the timetabling problem of high schools in Denmark is introduced, as seen from the perspective of the commercial system Lectio1, and an Adaptive Large Neighborhood Search (ALNS) algorithm is proposed for producing solutions. Lectio is a general-purpose cloud-based system

Year: 2012

Language: English

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8 Journal article

A Two-Stage Decomposition of High School Timetabling applied to cases in Denmark

Sørensen, Matias; Dahms, Florian H.W.

Computers and Operations Research — 2014, Volume 43, pp. 36-49

a Two-Stage Decomposition of an IP model for a practical case of high school timetabling is shown. This particular timetabling problem consists of assigning lectures to both a timeslot and a classroom, which is modeled using a very large amount of binary variables. The decomposition splits this model into two

Year: 2014

Language: English

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