An Adaptive Hybrid Genetic Algorithm ? Simulated Annealing Approach: a New Hybridization Technique Applied to Solving the Map Problem in Bayesian Belief Networks - Manar Hosny - Books - LAP Lambert Academic Publishing - 9783838335292 - April 2, 2010
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An Adaptive Hybrid Genetic Algorithm ? Simulated Annealing Approach: a New Hybridization Technique Applied to Solving the Map Problem in Bayesian Belief Networks

Manar Hosny

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An Adaptive Hybrid Genetic Algorithm ? Simulated Annealing Approach: a New Hybridization Technique Applied to Solving the Map Problem in Bayesian Belief Networks

Genetic algorithms (GAs) and simulated annealing (SA) are important search methods. Combining both may improve the search quality, for example by using SA as a genetic operator. One problem in such technique is to find annealing parameters that work for all stages of the run. In this research, we introduce a new adaptive hybrid GA-SA algorithm, in which SA acts as a mutation. However, the SA will be adaptive in the sense that its parameters are evolved during the search. Adaptation should help guide the search towards optimum solutions with minimum parameter tuning. The algorithm is tested on solving an important NP-hard problem, the MAP (Maximum a-Posteriori) Assignment Problem on BBNs (Bayesian Belief Networks). The results obtained indicate that the adaptive hybrid algorithm provides an improvement of solution quality over that obtained by GA used alone and GA augmented with standard non-adaptive SA. Its effect, however, is more profound for large problems, which are difficult for GA alone to solve. The techniques reported in this book should be of interest to researchers in heuristics and meta-heuristics, and their application to combinatorial optimization problems.

Media Books     Paperback Book   (Book with soft cover and glued back)
Released April 2, 2010
ISBN13 9783838335292
Publishers LAP Lambert Academic Publishing
Pages 176
Dimensions 150 × 10 × 226 mm   ·   280 g
Language German  

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