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EvoSTIM2002
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Disruption Management for an Airline - Rescheduling of Aircraft
Love M.,
Sorensen K. R.,
Larsen J.,
Clausen J.
Abstract:
The Aircraft Recovery Problem (ARP) involves decisions concerning
aircraft to flight assignments in situations where unforeseen events
have disrupted the existing flight schedule, e.g. bad weather causing
flight delays. The aircraft recovery problem aims to recover these
flight schedules through a series of reassignments of aircraft to
flights, delaying of flights and cancellations of flights. This
article demonstrates an effective method to solve ARP. A heuristic is
implemented, which is able to generate feasible revised flight
schedules of a good quality in less than 10 seconds. This article is a
product of the DESCARTES project, a project funded by the European
Union between the Technical University of Denmark, British Airways and
Carmen.
Session:
EvoSTIM Session 1: Methods of solving scheduling problems: April 3, 0900-1100
Ant Colony Optimization with the Relative Pheromone Evaluation Method
Merkle D.,
Middendorf M.
Abstract:
In this paper the relative pheromone evaluation method for Ant
Colony Optimization is investigated. We compare this method to the
standard pheromone method and the summation method. Moreover we
propose a new variant of the relative pheromone evaluation method.
Experiments performed for various instances of the single machine
scheduling problems with earliness costs and multiple due dates show
the potential of the relative pheromone evaluation method.
Session:
EvoSTIM Session 1: Methods of solving scheduling problems: April 3, 0900-1100
Improving Street Based Routing using Building Block Mutations
Urquhart N.,
Ross P.,
Paechter B.,
Chisholm K.
Abstract:
Street based routing (SBR) is a real-world inspired routing problem
that builds routes within an urban area for mail deliveries. The
authors have previously attempted to solve this problem using an
Evolutionary Algorithm (EA). In this paper the authors examine a
heuristic mutation based on concept of building blocks. In this case a
building block is defined as a group of genes, which when placed
together within a genotype result in a useful feature within the
phenotype. After evaluation on three test data sets our experiments
conclude that the explicit use of heuristic building blocks makes a
significant improvement to the SBR algorithms results.
Session:
EvoSTIM Session 1: Methods of solving scheduling problems: April 3, 0900-1100
Emma Hart
emmah@dcs.napier.ac.uk
School of Computing
Napier University
219 Colinton Road
Edinburgh
EH14 1DJ
Scotland, UK
Martin Middendorf
middendorf@aifb.uni-karlsruhe.de
Computer Science Group
Catholic University of Eichstätt
Ostenstr. 28
D-85072 Eichstätt
Germany
Daniel Borrajo (Spain)
Marco Dorigo (Belgium)
Agoston E. Eiben (The Netherlands)
Emma Hart (UK)
John Levine (UK)
Martin Middendorf (Germany)
Daniel Merkle (Germany)
Ben Paechter (UK)
Peter Swann (UK)
Andrea G. B. Tettamanzi (Italy)
Peter Ross (UK)
