
This paper proposes a novel ant colony hyperheuristic approach for reordering the rows and columns of symmetric positive definite matrices. This ant colony hyperheuristic approach evolves heuristics for bandwidth reduction applied to instances arising from specific application areas with the objective of generating low-cost reordering algorithms. This paper evaluates the resulting reordering algorithm in each application area against state-of-the-art reordering algorithms with the purpose of reducing the running times of the zero-fill incomplete Cholesky-preconditioned conjugate gradient method. The results obtained on a wide-ranging set of standard benchmark matrices show that the proposed approach compares favorably with state-of-the-art reordering algorithms when applied to instances arising from computational fluid dynamics, structural, and thermal problems.
Rotulagem de gráfico, Conjugate gradient method, Graph labeling, Matrizes esparsas, Ant colony optimization, Renumbering, Redução da largura de banda, Método de gradiente conjugado, Otimização de colônia de formigas, Heuristics, Fatoração incompleta de Cholesky, Hiperheurística, Algoritmo gráfico, Algoritmos de reordenação, Profle reduction, Graph algorithm, Hyperheuristic, Bandwidth reduction, Renumeração, Incomplete Cholesky factorization, Sparse matrices, Heurística, Redução de perfil, Reordering algorithms
Rotulagem de gráfico, Conjugate gradient method, Graph labeling, Matrizes esparsas, Ant colony optimization, Renumbering, Redução da largura de banda, Método de gradiente conjugado, Otimização de colônia de formigas, Heuristics, Fatoração incompleta de Cholesky, Hiperheurística, Algoritmo gráfico, Algoritmos de reordenação, Profle reduction, Graph algorithm, Hyperheuristic, Bandwidth reduction, Renumeração, Incomplete Cholesky factorization, Sparse matrices, Heurística, Redução de perfil, Reordering algorithms
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