A novel approach to find pseudo-peripheral vertices for Snay’s Heuristic

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorOliveira, S. L. Gonzaga de-
Autor(es): dc.creatorBernardes, J. A. B.-
Data de aceite: dc.date.accessioned2026-02-09T11:14:42Z-
Data de disponibilização: dc.date.available2026-02-09T11:14:42Z-
Data de envio: dc.date.issued2019-06-12-
Data de envio: dc.date.issued2019-06-12-
Data de envio: dc.date.issued2018-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/34724-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1136727-
Descrição: dc.descriptionThe solution of linear systems represented by Ax = b is fundamental in many numerical simulations in science and engineering. Reducing the profile of A can reduce the storage requirements and time processing costs of solving such linear systems. In this work, we propose a generalized algorithm for finding pseudo–peripheral vertices for Snay’s heuristic. In experiment performed on 36 instances contained in the Harwell-Boeing and SuiteSparse matrix collections, it has been found that the number of pseudo– peripheral vertices selected in Snay’s heuristic may be suitable for small instances, but it is insufficient to obtain reasonable results in instances that are not small. This paper recommends to select up to 26% (0.3%) of pseudo–peripheral vertices in relation to the instance size when applied to instances smaller than 3,000 (larger than 20,000) vertices.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Publicador: dc.publisherSociedade Brasileira de Matemática Aplicada e Computacional-
Direitos: dc.rightsAttribution 4.0 International-
Direitos: dc.rightsAttribution 4.0 International-
Direitos: dc.rightsacesso aberto-
Direitos: dc.rightshttp://creativecommons.org/licenses/by/4.0/-
Direitos: dc.rightshttp://creativecommons.org/licenses/by/4.0/-
???dc.source???: dc.sourceTendencias em Matemática Aplicada e Computacional-
Palavras-chave: dc.subjectProfile reduction-
Palavras-chave: dc.subjectSparse matrix-
Palavras-chave: dc.subjectReordering algorithms-
Título: dc.titleA novel approach to find pseudo-peripheral vertices for Snay’s Heuristic-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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