A feasibility-preserving local search operator for constrained discrete optimization problems

Lukasiewycz M, Glaß M, Haubelt C, Teich J (2008)


Publication Status: Published

Publication Type: Conference contribution, Conference Contribution

Publication year: 2008

Pages Range: 1968-1975

Article Number: 4631058

Conference Proceedings Title: Proceedings of the 2008 IEEE Congress on Evolutionary Computation (CEC 2008)

Event location: Hong Kong HK

ISBN: 9781424418237

DOI: 10.1109/CEC.2008.4631058

Abstract

Meta-heuristic optimization approaches are commonly applied to many discrete optimization problems. Many of these optimization approaches are based on a local search operator like, e.g., the mutate or neighbor operator that are used in Evolution Strategies or Simulated Annealing, respectively. However, the straightforward implementations of these operators tend to deliver infeasible solutions in constrained optimization problems leading to a poor convergence. In this paper, a novel scheme for a local search operator for discrete constrained optimization problems is presented. By using a sophisticated methodology incorporating a backtracking-based ILP solver, the local search operator preserves the feasibility also on hard constrained problems. In detail, an implementation of the local serach operator as a feasibility-preserving mutate and neighbor operator is presented. To validate the usability of this approach, scalable discrete constrained testcases are introduced that allow to calculate the expected number of feasible solutions. Thus, the hardness of the testcases can be quantified. Hence, a sound comparison of different optimization methodologies is presented. © 2008 IEEE.

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How to cite

APA:

Lukasiewycz, M., Glaß, M., Haubelt, C., & Teich, J. (2008). A feasibility-preserving local search operator for constrained discrete optimization problems. In Proceedings of the 2008 IEEE Congress on Evolutionary Computation (CEC 2008) (pp. 1968-1975). Hong Kong, HK.

MLA:

Lukasiewycz, Martin, et al. "A feasibility-preserving local search operator for constrained discrete optimization problems." Proceedings of the 2008 IEEE Congress on Evolutionary Computation, CEC 2008, Hong Kong 2008. 1968-1975.

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