05261052

a

05261052 Bauer, Kerstin Fischer, Thomas Krumke, Sven O. Gerhardt, Katharina Westphal, Stephan Merz, Peter Improved construction heuristics and iterated local search for the routing and wavelength assignment problem. van Hemert, Jano (ed.) et al., Evolutionary computation in combinatorial optimization. 8th European conference, EvoCOP 2008, Naples, Italy, March 26--28, 2008. Proceedings. Berlin: Springer (ISBN 978-3-540-78603-0/pbk). Lecture Notes in Computer Science 4972, 158-169 (2008). 2008 Berlin: Springer EN

doi:10.1007/978-3-540-78604-7_14

Summary: This paper deals with the design of improved construction heuristics and iterated local search for the Routing and Wavelength Assignment problem (RWA). Given a physical network and a set of communication requests, the static RWA deals with the problem of assigning suitable paths and wavelengths to the requests. We introduce benchmark instances from the SND library to the RWA and argue that these instances are more challenging than previously used random instances. We analyze the properties of several instances in detail and propose an improved construction heuristic to handle `problematic' instances. Our iterated local search finds the optimum for most instances.