Navegando por Assunto "Algoritmo cultural"

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Acesso aberto (Open Access)
Algoritmos culturais com abordagem memética e multipopulacional aplicados a problemas de otimização
(Universidade Federal do Pará, 2012-04-20) SILVA, Deam James Azevedo da; OLIVEIRA, Roberto Célio Limão de; http://lattes.cnpq.br/4497607460894318
In many optimization problems is hard to reach a good result or a result close to the optimum value in a feasible time, especially when working on large scale. So, many of these problems are addressed by heuristics or metaheuristics running search for better solutions within the defined search space. Within the natural computing algorithms there are the cultural and genetic algorithms. These are evolutionary metaheuristics complement each other due to the dual mechanism of cultural heritage/genetic. The purpose of this paper is to study and use such mechanisms adding local search heuristics and multipopulation applied to combinatorial optimization problems (knapsack and travel salesman problems), constrained problems and multimodal functions. Some experiments have been conducted to assess the performance of the proposed combination of meta-heuristisc and heuristics mechanisms against approaches found in literature as applied to problem addressed here.
Acesso aberto (Open Access)
Estudo da parametrização do algoritmo híbrido baseado no algoritmo cultural com algoritmo genético em uma abordagem multipopulacional
(Universidade Federal do Pará, 2015-10-01) SILVA JUNIOR, Joaquim Alberto Leite da; OLIVEIRA, Roberto Célio Limão de; http://lattes.cnpq.br/4497607460894318
The purpose of this paper is to analyze the application of a hybrid cultural algorithm with population generated by multipopulation feature of the genetic algorithm, or, more specifically, to develop a parameter of the hybrid algorithm based on cultural algorithm with genetic algorithm for multidimensional knapsack problem in areas of computer science and computational intelligence. The aim of this work is to find the best parameters for hybrid cultural algorithm and over genetic algorithm, with model of islands (multipopulation characteristic) applied to combinatorial optimization problem called “Multidimensional Knapsack“. Several experiments are performed to make an assessment regarding of these mechanisms hybrids with other algorithms available in the literature.