Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas
| Ano de defesa: | 2005 |
|---|---|
| Autor(a) principal: | |
| Orientador(a): | |
| Banca de defesa: | |
| Tipo de documento: | Dissertação |
| Tipo de acesso: | Acesso aberto |
| Idioma: | por |
| Instituição de defesa: |
Não Informado pela instituição
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| Programa de Pós-Graduação: |
Não Informado pela instituição
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| Departamento: |
Não Informado pela instituição
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| País: |
Não Informado pela instituição
|
| Palavras-chave em Português: | |
| Link de acesso: | http://www.repositorio.ufc.br/handle/riufc/18329 |
Resumo: | In this work the vertex coloring problem is approached via integer programming. A tighter version of the independent set formulation is used, where the vertex-related constraints are substituted by subgraph-related constraints. Each constraint establishes a lower bound on the number of independent sets intersecting a subgraph H. It is shown a sufficient condition for this inequality to define a facet of the associated polytope. Basically, H is required to be color critical, not included in another color critical subgraph, and to have a connected complement. Also, the column generation algorithm proposed by Mehotra and Trick (INFORMS Journal in Computing, 1996) is adapted to allow the addition of cutting planes and to provide lower bounds along the process, which may abbreviate its end. Some computational experiments are reported. |
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Rodrigues, Carlos DiegoCampêlo Neto, Manoel Bezerra2016-07-14T15:28:23Z2016-07-14T15:28:23Z2005RODRIGUES, Carlos Diego. Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas. 2005. 79 f. Dissertação (Mestrado em ciência da computação) - Universidade Federal do Ceará, Fortaleza-CE, 2005.http://www.repositorio.ufc.br/handle/riufc/18329In this work the vertex coloring problem is approached via integer programming. A tighter version of the independent set formulation is used, where the vertex-related constraints are substituted by subgraph-related constraints. Each constraint establishes a lower bound on the number of independent sets intersecting a subgraph H. It is shown a sufficient condition for this inequality to define a facet of the associated polytope. Basically, H is required to be color critical, not included in another color critical subgraph, and to have a connected complement. Also, the column generation algorithm proposed by Mehotra and Trick (INFORMS Journal in Computing, 1996) is adapted to allow the addition of cutting planes and to provide lower bounds along the process, which may abbreviate its end. Some computational experiments are reported.Neste trabalho abordamos o problema de coloração de vértices via programação inteira. Uma versão expandida da formulação por conjuntos independentes é utilizada para abrigar outras sub-estruturas do grafos além dos vértices. Cada uma dessas sub-estruturas define uma restrição que determina quantos conjuntos independentes são necessarios para cobrir aquele subgrafo. Experimentos com um método de geração de cortes e colunas para o problema são feitos para determinar um limite inferior para um conjunto de instâncias classicas para esse problema a biblioteca DIMACS.Ciência da computaçãoColoração de vérticesVertex coloringLimites inferiores para o problema de coloração de vértices via geração de cortes e colunasInferior limits for the problem of vertex coloring saw generation of cuts and columnsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisporreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccessLICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.ufc.br/bitstream/riufc/18329/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52ORIGINAL2005_dis_cdrodrigues.pdf2005_dis_cdrodrigues.pdfapplication/pdf545679http://repositorio.ufc.br/bitstream/riufc/18329/1/2005_dis_cdrodrigues.pdf7cceeca6a76bce10cbde4bfb4ef0ee02MD51riufc/183292020-06-26 10:30:20.245oai:repositorio.ufc.br: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Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2020-06-26T13:30:20Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false |
| dc.title.pt_BR.fl_str_mv |
Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas |
| dc.title.en.pt_BR.fl_str_mv |
Inferior limits for the problem of vertex coloring saw generation of cuts and columns |
| title |
Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas |
| spellingShingle |
Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas Rodrigues, Carlos Diego Ciência da computação Coloração de vértices Vertex coloring |
| title_short |
Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas |
| title_full |
Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas |
| title_fullStr |
Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas |
| title_full_unstemmed |
Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas |
| title_sort |
Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas |
| author |
Rodrigues, Carlos Diego |
| author_facet |
Rodrigues, Carlos Diego |
| author_role |
author |
| dc.contributor.author.fl_str_mv |
Rodrigues, Carlos Diego |
| dc.contributor.advisor1.fl_str_mv |
Campêlo Neto, Manoel Bezerra |
| contributor_str_mv |
Campêlo Neto, Manoel Bezerra |
| dc.subject.por.fl_str_mv |
Ciência da computação Coloração de vértices Vertex coloring |
| topic |
Ciência da computação Coloração de vértices Vertex coloring |
| description |
In this work the vertex coloring problem is approached via integer programming. A tighter version of the independent set formulation is used, where the vertex-related constraints are substituted by subgraph-related constraints. Each constraint establishes a lower bound on the number of independent sets intersecting a subgraph H. It is shown a sufficient condition for this inequality to define a facet of the associated polytope. Basically, H is required to be color critical, not included in another color critical subgraph, and to have a connected complement. Also, the column generation algorithm proposed by Mehotra and Trick (INFORMS Journal in Computing, 1996) is adapted to allow the addition of cutting planes and to provide lower bounds along the process, which may abbreviate its end. Some computational experiments are reported. |
| publishDate |
2005 |
| dc.date.issued.fl_str_mv |
2005 |
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2016-07-14T15:28:23Z |
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2016-07-14T15:28:23Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
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RODRIGUES, Carlos Diego. Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas. 2005. 79 f. Dissertação (Mestrado em ciência da computação) - Universidade Federal do Ceará, Fortaleza-CE, 2005. |
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http://www.repositorio.ufc.br/handle/riufc/18329 |
| identifier_str_mv |
RODRIGUES, Carlos Diego. Limites inferiores para o problema de coloração de vértices via geração de cortes e colunas. 2005. 79 f. Dissertação (Mestrado em ciência da computação) - Universidade Federal do Ceará, Fortaleza-CE, 2005. |
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por |
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por |
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