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- Luiz Antonio Nogueira Lorena, Edson Luiz FranÃ§a Senne
- Computers & OR
- 2004

The Capacitated p-median problem (CPMP) seeks to solve the optimal location of p facilities, considering distances and capacities for the service to be given by each median. In this paper we presentâ€¦ (More)

- Edson Luiz FranÃ§a Senne, Luiz Antonio Nogueira Lorena, Marcos A ntonio Pereira, Luiz Antonio Nogueira
- 2001

The Lagrangean/surrogate relaxation was explored recently as a faster computational alternative to traditional Lagrangean heuristics. We combine Lagrangean/surrogate relaxation and traditional columnâ€¦ (More)

- Luiz Antonio Nogueira, Lorena, LACINPE, J. Campos, Luiz Antonio Nogueira Lorena, Edson Luiz FranÃ§a Senne
- 2000

The heuristics implement a search on p-median clusters identified on a Lagrangean/surrogate optimization process. These heuristics are based on locationallocation procedures that swap medians andâ€¦ (More)

- Missae Yamamoto, Gilberto CÃ¢mara, Luiz Antonio Nogueira Lorena
- GeoInformatica
- 2002

The generation of better label placement configurations in maps is a problem that comes up in automated cartographic production. The objective of a good label placement is to display the geographicâ€¦ (More)

- Antonio Augusto Chaves, Luiz Antonio Nogueira Lorena, CristÃ³bal Miralles
- Hybrid Metaheuristics
- 2009

- Antonio Augusto Chaves, Luiz Antonio Nogueira Lorena
- Computers & OR
- 2010

The Capacitated Centred Clustering Problem (CCCP) consists in partitioning a set of n points into p disjoint clusters with a known capacity. Each cluster is specified by a centroid. The objective isâ€¦ (More)

- Missae Yamamoto, Gilberto CÃ¢mara, Luiz Antonio Nogueira Lorena
- GeoInfo
- 2005

The generation of good label placement arrangements is a frequent problem when producing maps. The objective of a good label placement is to display the geographic position of the features with theirâ€¦ (More)

- Marcelo GonÃ§alves Narciso, Luiz Antonio Nogueira Lorena
- European Journal of Operational Research
- 1999

This work presents Lagrangean/surrogate relaxation to the problem of maximum proÂ®t assignment of n tasks to m agents (n > m), such that each task is assigned to only one agent subject to capacityâ€¦ (More)

- Geraldo R. Mauri, Luiz Antonio Nogueira Lorena
- IEEE Intelligent Transportation Systems Magazine
- 2009

This paper presents a general model for a dial-a-ride problem and a Simulated Annealing approach to solve it focusing on the quality of service. The model includes several distinct cases of the realâ€¦ (More)

- FabrÃcio Lacerda Biajoli, Luiz Antonio Nogueira Lorena
- IBERAMIA-SBIA
- 2006

The Mirrored Traveling Tournament Problem (mTTP) is an optimization problem that represents certain types of sports timetabling, where the objective is to minimize the total distance traveled by theâ€¦ (More)