A First-order e-approximation algorithm for linear programs and a second-order implementation

This article presents an algorithm that finds an e-feasible solution relatively to some constraints of a linear program. The algorithm is a first-order feasible directions method with constant stepsize that attempts to find the minimizer of an exponential penalty function. When embedded with bisecti...

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Detalhes bibliográficos
Autor principal: Rocha, Ana Maria A. C. (author)
Outros Autores: Fernandes, Edite Manuela da G. P. (author), Soares, João L. (author)
Formato: conferencePaper
Idioma:eng
Publicado em: 2005
Assuntos:
Texto completo:http://hdl.handle.net/1822/5414
País:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/5414
Descrição
Resumo:This article presents an algorithm that finds an e-feasible solution relatively to some constraints of a linear program. The algorithm is a first-order feasible directions method with constant stepsize that attempts to find the minimizer of an exponential penalty function. When embedded with bisection search, the algorithm allows for the approximated solution of linear programs. We present applications of this framework to set-partitioning problems and report some computational results with first-order and second-order implementations.