Navegando por Assunto "Multicriteria models"

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Métodos de auto sintonização bioinspirados para o algoritmo genético
(Universidade Federal do Pará, 2024-03-25) COSTA, Heictor Alves de Oliveira; OLIVEIRA, Roberto Célio Limão de; http://lattes.cnpq.br/4497607460894318; https://orcid.org/0000-0002-6640-3182
This research was motivated by the need to improve the efficiency of the Genetic Algorithm (GA) when dealing with a variety of complex problems. The goal is to develop strategies that allow the GA to automatically adjust itself to the specific challenges of each problem, without the need for manual intervention to readjust its operational parameters, making this algorithm a more dynamic tool. To achieve this goal, this research proposed two bioinspired strategies to enhance the adaptability and efficiency of GA. The first strategy was Adaptive Radiation (AR), a biological phenomenon that causes high rates of mutation in populations, allowing rapid adaptation to survival conditions. The second strategy was a selection technique inspired by Multi-Criteria Decision Models (MCDM) and the natural behavior of choosing partners, observed on different species, which assist in decision making, evaluating solutions based on multiple criteria. The methodology consists of implementing these strategies in GA, creating two new algorithms: GA with Adaptive Radiation (GAAR) and Multicriteria GA (MCGA). These algorithms were then tested on three different categories of problems: ten benchmark functions, which simulate a variety of complex environments; four engineering problems, which represent industry challenges; and a real problem, to test the practical applicability of the algorithms in a high magnitude scenario. The results showed that the GAAR and MCGA algorithms outperformed the standard GA and other optimization algorithms on most of the tested problems. In particular, they were able to effectively adapt to different types of problems and find efficient solutions without the need to manually readjust their parameters. These results suggest that the introduction of bioinspired strategies such as AR and MCDM can significantly improve GA performance, making them a powerful tool for a wide range of realworld applications.