A hybrid scatter search meta-heuristic for delay-constrained multicast routing problems

Ying Xu, Rong Qu
2010 Applied intelligence (Boston)  
This paper investigates the first hybrid scatter search and path relinking meta-heuristic for the Delay-Constrained Least-Cost (DCLC) multicast routing problem. The underpinning mathematic model of the DCLC problem is the constrained Steiner tree problem in graphs, a well known NP-complete problem. After combining a path relinking method as the solution combination method in scatter search, we further explore two improvement strategies: tabu search and variable neighborhood search, to intensify
more » ... the search in the hybrid scatter search algorithm. A large number of simulations on some benchmark instances from the OR-library, and a group of random graphs of different characteristics demonstrate that the improvement strategy greatly affects the performance of the proposed scatter search algorithm. The hybrid scatter search algorithm intensified by a variable neighborhood descent search is highly efficient in solving the DCLC multicast routing problem in comparison with other algorithms and heuristics in the literature.
doi:10.1007/s10489-010-0256-x fatcat:2ibmj2vkufdinlaezo4e4cnvq4