Un enfoque relax and cut usando una formulación de flujo multiproductos para el problema del agente viajero
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Data
2015-01-01
Autores
Kawashima, Makswell Seyiti [UNESP]
Rangel, Socorro [UNESP]
Litvinchev, Igor
Infante, Luis
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Resumo
In this paper we explore the multi-commodity flow formulation for the Asymmetric Traveling Salesman Problem (ATSP) to obtain dual bounds. The procedure employed is a variant of a relax and cut procedure proposed in the literature that computes the Lagrangean multipliers associated to the subtour elimination constraints preserving the optimality of the multipliers associated to the assignment constraints. The results obtained by the computational study are encouraging and show that the proposed algorithm generated good dual bounds for the ATSP with a low execution time.
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Lagrangean relaxation, Relax and cut, Traveling salesman problem
Como citar
DYNA (Colombia), v. 82, n. 191, p. 42-50, 2015.