Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFG |
dARK ID: | ark:/38995/0013000009q1x |
Texto Completo: | http://repositorio.bc.ufg.br/tede/handle/tede/9370 |
Resumo: | Nonlinear conjugate gradient methods are efficient first-order algorithms for solving unconstrained optimization problems. In particular, the Dai-Yuan (DY) method, introduced in the 1990s, is one of the most popular. The objective of the present work is to investigate the numerical performance of the DY method with a modification in the conjugate parameter. At each iteration of this method, it is necessary to compute a step size satisfying the standard Wolfe conditions. Thus, we will describe the line search algorithm of Moré and Thuente. Under usual assumptions, the global convergence of the modified DY method will be provided. Numerical tests will be presented using the CUTEst problem library. |
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Prudente, Leandro da Fonsecahttp://lattes.cnpq.br/4573611419840935Prudente, Leandro da FonsecaGonçalves, Douglas SoaresPerez, Luis Roman LucambioGonçalves, Max Leandro Nobrehttp://lattes.cnpq.br/7445119267406222Souza, Danilo Rodrigues de2019-03-21T14:42:40Z2019-02-28SOUZA, D. R. Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita. 2019. 71 f. Dissertação (Mestrado em Matemática) - Universidade Federal de Goiás, Goiânia, 2019.http://repositorio.bc.ufg.br/tede/handle/tede/9370ark:/38995/0013000009q1xNonlinear conjugate gradient methods are efficient first-order algorithms for solving unconstrained optimization problems. In particular, the Dai-Yuan (DY) method, introduced in the 1990s, is one of the most popular. The objective of the present work is to investigate the numerical performance of the DY method with a modification in the conjugate parameter. At each iteration of this method, it is necessary to compute a step size satisfying the standard Wolfe conditions. Thus, we will describe the line search algorithm of Moré and Thuente. Under usual assumptions, the global convergence of the modified DY method will be provided. Numerical tests will be presented using the CUTEst problem library.Os métodos de gradiente conjugado não-lineares são métodos de primeira ordem reconhecidamente eficientes para resolver problemas de otimização irrestritos. Em particular, o método de Dai–Yuan (DY), introduzido nos final dos anos 90, é um dos mais populares. O objetivo deste trabalho é investigar o desempenho numérico do método DY com uma modificação no parâmetro conjugado. A cada iteração desse método, é necessário computar um tamanho de passo satisfazendo as condições padrões de Wolfe. Assim, descreveremos o algoritmo de busca linear de Moré e Thuente. Sob hipóteses usuais, a convergência global do método de DY modificado será provada. Testes numéricos serão apresentados utilizando a biblioteca de problemas CUTEst.Submitted by Ana Caroline Costa (ana_caroline212@hotmail.com) on 2019-03-19T20:09:43Z No. of bitstreams: 2 Dissertação - Danilo Rodrigues de Souza - 2019.pdf: 1997915 bytes, checksum: 18211c6b137f9aeb04e5c2af773b0f4d (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Approved for entry into archive by Liliane Ferreira (ljuvencia30@gmail.com) on 2019-03-21T14:42:40Z (GMT) No. of bitstreams: 2 Dissertação - Danilo Rodrigues de Souza - 2019.pdf: 1997915 bytes, checksum: 18211c6b137f9aeb04e5c2af773b0f4d (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Made available in DSpace on 2019-03-21T14:42:40Z (GMT). No. of bitstreams: 2 Dissertação - Danilo Rodrigues de Souza - 2019.pdf: 1997915 bytes, checksum: 18211c6b137f9aeb04e5c2af773b0f4d (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2019-02-28Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqapplication/pdfporUniversidade Federal de GoiásPrograma de Pós-graduação em Matemática (IME)UFGBrasilInstituto de Matemática e Estatística - IME (RG)http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessMétodo do gradiente conjugado modificadoOtimização irrestritaCondições de WolfeAlgoritmo de busca linearAnálise numéricaModified conjugate gradient methodUnrestricted optimizationWolfe conditionsLine seanch algorithmsNumerical analysisCIENCIAS EXATAS E DA TERRA::MATEMATICAMétodo do gradiente conjugado Dai-Yuan modificado para otimização irrestritaDai-Yuan conjugate gradient method modified for unrestricted optimizationinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis6600717948137941247600600600600-4268777512335152015-7090823417984401694-2555911436985713659reponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGLICENSElicense.txtlicense.txttext/plain; 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dc.title.eng.fl_str_mv |
Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita |
dc.title.alternative.eng.fl_str_mv |
Dai-Yuan conjugate gradient method modified for unrestricted optimization |
title |
Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita |
spellingShingle |
Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita Souza, Danilo Rodrigues de Método do gradiente conjugado modificado Otimização irrestrita Condições de Wolfe Algoritmo de busca linear Análise numérica Modified conjugate gradient method Unrestricted optimization Wolfe conditions Line seanch algorithms Numerical analysis CIENCIAS EXATAS E DA TERRA::MATEMATICA |
title_short |
Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita |
title_full |
Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita |
title_fullStr |
Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita |
title_full_unstemmed |
Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita |
title_sort |
Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita |
author |
Souza, Danilo Rodrigues de |
author_facet |
Souza, Danilo Rodrigues de |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Prudente, Leandro da Fonseca |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/4573611419840935 |
dc.contributor.referee1.fl_str_mv |
Prudente, Leandro da Fonseca |
dc.contributor.referee2.fl_str_mv |
Gonçalves, Douglas Soares |
dc.contributor.referee3.fl_str_mv |
Perez, Luis Roman Lucambio |
dc.contributor.referee4.fl_str_mv |
Gonçalves, Max Leandro Nobre |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/7445119267406222 |
dc.contributor.author.fl_str_mv |
Souza, Danilo Rodrigues de |
contributor_str_mv |
Prudente, Leandro da Fonseca Prudente, Leandro da Fonseca Gonçalves, Douglas Soares Perez, Luis Roman Lucambio Gonçalves, Max Leandro Nobre |
dc.subject.por.fl_str_mv |
Método do gradiente conjugado modificado Otimização irrestrita Condições de Wolfe Algoritmo de busca linear Análise numérica |
topic |
Método do gradiente conjugado modificado Otimização irrestrita Condições de Wolfe Algoritmo de busca linear Análise numérica Modified conjugate gradient method Unrestricted optimization Wolfe conditions Line seanch algorithms Numerical analysis CIENCIAS EXATAS E DA TERRA::MATEMATICA |
dc.subject.eng.fl_str_mv |
Modified conjugate gradient method Unrestricted optimization Wolfe conditions Line seanch algorithms Numerical analysis |
dc.subject.cnpq.fl_str_mv |
CIENCIAS EXATAS E DA TERRA::MATEMATICA |
description |
Nonlinear conjugate gradient methods are efficient first-order algorithms for solving unconstrained optimization problems. In particular, the Dai-Yuan (DY) method, introduced in the 1990s, is one of the most popular. The objective of the present work is to investigate the numerical performance of the DY method with a modification in the conjugate parameter. At each iteration of this method, it is necessary to compute a step size satisfying the standard Wolfe conditions. Thus, we will describe the line search algorithm of Moré and Thuente. Under usual assumptions, the global convergence of the modified DY method will be provided. Numerical tests will be presented using the CUTEst problem library. |
publishDate |
2019 |
dc.date.accessioned.fl_str_mv |
2019-03-21T14:42:40Z |
dc.date.issued.fl_str_mv |
2019-02-28 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SOUZA, D. R. Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita. 2019. 71 f. Dissertação (Mestrado em Matemática) - Universidade Federal de Goiás, Goiânia, 2019. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tede/9370 |
dc.identifier.dark.fl_str_mv |
ark:/38995/0013000009q1x |
identifier_str_mv |
SOUZA, D. R. Método do gradiente conjugado Dai-Yuan modificado para otimização irrestrita. 2019. 71 f. Dissertação (Mestrado em Matemática) - Universidade Federal de Goiás, Goiânia, 2019. ark:/38995/0013000009q1x |
url |
http://repositorio.bc.ufg.br/tede/handle/tede/9370 |
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por |
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por |
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6600717948137941247 |
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600 600 600 600 |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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Universidade Federal de Goiás |
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Programa de Pós-graduação em Matemática (IME) |
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UFG |
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Brasil |
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Instituto de Matemática e Estatística - IME (RG) |
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Universidade Federal de Goiás |
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