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Genetic-algorithm-based optimal apportionment of reliability and redundancy under multiple objectives.
- Source :
-
IIE Transactions . Apr2009, Vol. 41 Issue 4, p287-298. 12p. 3 Diagrams, 6 Charts, 4 Graphs. - Publication Year :
- 2009
-
Abstract
- When solving multi-objective optimization problems subject to constraints in reliability-based design, it is desirable for the decision maker to have a sufficient number of solutions available for selection. However, many existing approaches either combine multiple objectives into a single objective or treat the objectives as penalties. This results in fewer optimal solutions than would be provided by a multi-objective approach. For such cases, a niched Pareto Genetic Algorithm (GA) may be a viable alternative. Unfortunately, it is often difficult to set penalty parameters that are required in these algorithms. In this paper, a multi-objective optimization algorithm is proposed that combines a niched Pareto GA with a constraint handling method that does not need penalty parameters. The proposed algorithm is based on Pareto tournament and equivalence sharing, and involves the following components: search for feasible solutions, selection of non-dominated solutions and maintenance of diversified solutions. It deals with multiple objectives by incorporating the concept of Pareto dominance in its selection operator while applying a niching pressure to spread the population along the Pareto frontier. To demonstrate the performance of the proposed algorithm, a test problem is presented and the solution distributions in three different generations of the algorithm are illustrated. The optimal solutions obtained with the proposed algorithm for a practical reliability problem are compared with those obtained by a single-objective optimization method, a multi-objective GA method, and a hybrid GA method. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0740817X
- Volume :
- 41
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- IIE Transactions
- Publication Type :
- Academic Journal
- Accession number :
- 36281561
- Full Text :
- https://doi.org/10.1080/07408170802322994