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- W1972070025 abstract "The multi-dimensional knapsack problems (MKP) have a landscape called a rugged landscape, which may lead to local optima without any progress to optimal solution. Optimization requirement often involves searching amongst various solutions under multi-objective situations. Maintaining diversity and avoiding premature convergence while keeping the population size small and unique is one of the prime approaches to meet the requirements. In this paper, we propose a practical solution to the duplicity as well as premature convergence problem. We have introduced the concept of virtually compressed binary trie (VCBT) and tried to show that the VCBT can be naturally integrated with the genetic algorithm (GA) so that duplicates are completely eliminated while the trie size is kept reasonably small and practically feasible. Our binary trie coding scheme (BTCS) relies on problem-specific knowledge in fragmenting the search space into feasible and infeasible regions, and thus pruning the infeasible areas. Pruning of the trie occurs frequently and is dependent upon many parameters (other than the infeasibility) and the trie size is kept small throughout the whole process. Comparison tables are given for the performance of the BTCS and other good performing evolutionary algorithms found in literature for the MKP. Here, the optimization ability of the BTCS is compared against the GA given by Chu and Beasley; in particular, on a suite of standard MKP test instances from the OR library. The simulation results show that the proposed strategy significantly improves the computational efficiency of GA and generates robust and near-optimal solutions." @default.
- W1972070025 created "2016-06-24" @default.
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- W1972070025 date "2012-11-27" @default.
- W1972070025 modified "2023-09-23" @default.
- W1972070025 title "Binary trie coding scheme: an intelligent genetic algorithm avoiding premature convergence" @default.
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- W1972070025 doi "https://doi.org/10.1080/00207160.2012.742514" @default.
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