ORBEL 32

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Schedule

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Thursday, February 1
08:30-09:15Welcome
09:15-09:30Opening session
09:30-10:30Plenary session - Dominique Feillet (Chair: Yasemin Arda)
10:30-11:00Coffee break
11:00-12:20Parallel sessions
  Routing Problems
Chair: Pieter Vansteenwegen
Room: 138
Emergency operations scheduling
Chair: El-Houssaine Aghezzaf
Room: 130
Algorithm design
Chair: Gerrit Janssens
Room: 126
Multiple Objectives
Chair: Filip Van Utterbeeck
Room: 120
12:20-13:30Lunch
12:25-13:25ORBEL board meeting
13:30-14:50Parallel sessions
  Integrated logistics
Chair: Kris Braekers
Room: 138
Person transportation
Chair: Célia Paquay
Room: 130
Continuous models
Chair: Nicolas Gillis
Room: 126
Integer programming
Chair: Bernard Fortz
Room: 120
14:50-15:20Coffee break
15:20-16:20Parallel sessions
  Material handling and warehousing 1
Chair: Greet Vanden Berghe
Room: 138
Operations management
Chair: Roel Leus
Room: 130
Matrix factorization
Chair: Pierre Kunsch
Room: 126
 
16:30-17:10Parallel sessions
  Material handling and warehousing 2
Chair: Katrien Ramaekers
Room: 138
Routing and local search
Chair: An Caris
Room: 130
Traffic management
Chair: Joris Walraevens
Room: 126
Pharmaceutical supply chains
Chair: Bart Smeulders
Room: 120
17:15-18:15ORBEL general assembly
18:30-...Conference dinner

Friday, February 2
09:30-10:30Plenary session - Martin Savelsbergh (Chair: Yves Crama)
10:30-10:50Coffee break
10:50-12:10Parallel sessions
  Optimization in health care
Chair: Jeroen Beliën
Room: 138
Network design
Chair: Jean-Sébastien Tancrez
Room: 130
Local search methodology
Chair: Patrick De Causmaecker
Room: 126
ORBEL Award
Chair: Frits Spieksma
Room: 120
12:10-13:00Lunch
13:00-14:00Parallel sessions
  Production and inventory management
Chair: Tony Wauters
Room: 138
Logistics 4.0
Chair: Thierry Pironet
Room: 130
Data clustering
Chair: Yves De Smet
Room: 126
Collective decision making
Chair: Bernard De Baets
Room: 120
14:10-15:10Parallel sessions
  Sport scheduling
Chair: Dries Goossens
Room: 138
Discrete choice modeling
Chair: Virginie Lurkin
Room: 130
Data classification
Chair: Ashwin Ittoo
Room: 126
 
15:10-15:30Coffee break
15:30- 16:30Plenary session - Michel Bierlaire (Chair: Michaël Schyns)
16:30- 16:45ORBEL award and closing session
16:45-18:00Closing cocktail

Thursday 11:00 - 12:20 Routing Problems
Room 138 - Chair: Pieter Vansteenwegen

Thursday 11:00 - 12:20 Emergency operations scheduling
Room 130 - Chair: El-Houssaine Aghezzaf

Thursday 11:00 - 12:20 Algorithm design
Room 126 - Chair: Gerrit Janssens

Thursday 11:00 - 12:20 Multiple Objectives
Room 120 - Chair: Filip Van Utterbeeck

Thursday 13:30 - 14:50 Integrated logistics
Room 138 - Chair: Kris Braekers

Thursday 13:30 - 14:50 Person transportation
Room 130 - Chair: Célia Paquay

Thursday 13:30 - 14:50 Continuous models
Room 126 - Chair: Nicolas Gillis

Thursday 13:30 - 14:50 Integer programming
Room 120 - Chair: Bernard Fortz

Thursday 15:20 - 16:20 Material handling and warehousing 1
Room 138 - Chair: Greet Vanden Berghe

Thursday 15:20 - 16:20 Operations management
Room 130 - Chair: Roel Leus

Thursday 15:20 - 16:20 Matrix factorization
Room 126 - Chair: Pierre Kunsch

Thursday 16:30 - 17:10 Material handling and warehousing 2
Room 138 - Chair: Katrien Ramaekers

Thursday 16:30 - 17:10 Routing and local search
Room 130 - Chair: An Caris

Thursday 16:30 - 17:10 Traffic management
Room 126 - Chair: Joris Walraevens

Thursday 16:30 - 17:10 Pharmaceutical supply chains
Room 120 - Chair: Bart Smeulders

Friday 10:50 - 12:10 Optimization in health care
Room 138 - Chair: Jeroen Beliën

Friday 10:50 - 12:10 Network design
Room 130 - Chair: Jean-Sébastien Tancrez
  • Considering complex routes in the Express Shipment Service Network Design problem
    José Miguel Quesada PÉrez (Université catholique de Louvain)
    Co-authors: Jean-Charles Lange, Jean-Sébastien Tancrez
  • Assessing Collaboration In Supply Chain
    Thomas Hacardiaux (Université catholique de Louvain)
    Co-authors: Jean-Sébastien Tancrez
  • Planning of feeding station installment and battery sizing for an electric urban bus network
    Virginie Lurkin (École polytechnique fédérale de Lausanne)
    Co-authors: A. Zanarini, S.S. Azadeh, Y. Maknoon, M. Bierlaire
  • A matheuristic for the problem of pre-positioning relief supplies
    Renata Turkes (University of Antwerp)
    Co-authors: Kenneth Sörensen, Daniel Palhazi Cuervo
    Abstract:
    Every year millions of people around the world are affected by natural and man-made disasters. No country is immune from the risk of disasters, but much human loss can be avoided by preparing to better deal with these emergencies. Pre-positioning emergency supplies at strategic locations is a mechanism to increase preparedness for disasters, as it makes the critical supplies such as water, food or medicine readily available to the people in need. To solve the pre-positioning problem is to develop a strategy that determines the number, location and size of storage facilities, the quantities of various types of emergency supplies stocked in each facility and the distribution of the supplies to demand locations after an event, under uncertainty about demands, survival of pre-positioned supplies and transportation network availability. Despite a growing scientific attention for the pre-positioning problem, there still does not exist a set of benchmark instances what hinders thorough hypotheses testing, sensitivity analyses, model validation or solution procedure evaluation. Researchers therefore have to invest a lot of time and effort to process raw historical data from several databases to generate a single case study that is nonetheless hardly sufficient to draw any meaningful conclusions. By carefully manipulating some of the instance parameters, we generated 30 diverse case studies that were inspired from 4 instances collected from the literature. In addition, we developed a tool to algorithmically generate arbitrarily many random instances of any size and with diverse characteristics. The case studies and the random instance generator will be made publicly available to hopefully foster further research on the problem of pre-positioning relief supplies. Since the problem become intractable for any of the instances of reasonable size, we developed a matheuristic that employs iterated local search techniques to look for good location and inventory configurations and uses CPLEX to find the optimal solution of the aid distribution sub-problem. Numerical experiments on the set of instances we generated show that the matheuristic outperforms CPLEX for any given computation time, especially for large instances.

Friday 10:50 - 12:10 Local search methodology
Room 126 - Chair: Patrick De Causmaecker

Friday 10:50 - 12:10 ORBEL Award
Room 120 - Chair: Frits Spieksma

    Friday 13:00 - 14:00 Production and inventory management
    Room 138 - Chair: Tony Wauters

    Friday 13:00 - 14:00 Logistics 4.0
    Room 130 - Chair: Thierry Pironet

    Friday 13:00 - 14:00 Data clustering
    Room 126 - Chair: Yves De Smet

    Friday 13:00 - 14:00 Collective decision making
    Room 120 - Chair: Bernard De Baets

    Friday 14:10 - 15:10 Sport scheduling
    Room 138 - Chair: Dries Goossens

    Friday 14:10 - 15:10 Discrete choice modeling
    Room 130 - Chair: Virginie Lurkin

    Friday 14:10 - 15:10 Data classification
    Room 126 - Chair: Ashwin Ittoo

     
     
      ORBEL - Conference chair: Prof. A. Arda - Platform: Prof. M. Schyns.