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- W2153810094 abstract "Dynamic Design Optimization (DDO) of various engineering problems exhibit multiple optima in the feasible domain and could be treated as complex multimodal optimization problems. Application of traditional optimization techniques to such problems is computationally expensive with a high risk of getting trapped into a local optimum. Similarly, Genetic Algorithms (GA) suffer from premature convergence and weak exploitation capabilities. In this paper, a Niche Hybrid Genetic Algorithm (NHGA) is proposed for optimizing continuous multimodal models. This architecture of Hybrid Algorithms (HAs) organically merge Niche Techniques and Nelder-Mead's Simplex Method into GA. The NHGA is executed in the global exploitation and local exploration. In the former, a simplex search (SS) is performed in the potential niches for a quick evaluation of the promising search zones following the generation of dynamic niche sets by a Clearing Method (CM). A further SS is subsequently executed in the exploitation phase for a quick location of a global optimum in the located most promising zone and an inverse operator introduced to maintain population diversity. The proposed technique effectively alleviates premature convergence and improves the weak exploitation capacity of GAs. To emphasize its application, numerous multi-modal functions have been experimented with, and a 5-degree of freedom vehicle suspension system optimized. Analytical results indicate the potential of the approach in DDO of mechanical systems." @default.
- W2153810094 created "2016-06-24" @default.
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- W2153810094 date "2009-09-01" @default.
- W2153810094 modified "2023-10-16" @default.
- W2153810094 title "Optimization of multimodal models in mechanical design by a Niche Hybrid Genetic Algorithm" @default.
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- W2153810094 doi "https://doi.org/10.1109/afrcon.2009.5308106" @default.
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