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- Yuri Frota, Nelson Maculan, Thiago F. Noronha, Celso C. Ribeiro
- Networks
- 2010

The problem of Routing and Wavelength Assignment in Wavelength Division Multiplexing (WDM) optical networks consists in routing a set of lightpaths and assigning a wavelength to each of them, such that light-paths whose routes share a common fiber are assigned to different wavelengths. When the objective is to minimize the total number of wavelengths used,… (More)

- Thiago F. Noronha, Celso C. Ribeiro
- European Journal of Operational Research
- 2006

- Thiago F. Noronha, Mauricio G. C. Resende, Celso C. Ribeiro
- J. Global Optimization
- 2011

The problem of routing and wavelength assignment (RWA) in wavelength division multiplexing (WDM) optical networks consists in routing a set of lightpaths and assigning a wavelength to each of them, such that light-paths whose routes share a common fiber are assigned different wavelengths. This problem was shown to be NP-hard when the objective is to… (More)

- Laura Bahiense, Yuri Frota, Thiago F. Noronha, Celso C. Ribeiro
- Discrete Applied Mathematics
- 2014

An equitable k-coloring of a graph is defined by a partition of its vertices into k disjoint stable subsets, such that the difference between the cardinalities of any two subsets is at most one. The equitable coloring problem consists of finding the minimum value of k such that a given graph can be equitably k-colored. We present two new integer programming… (More)

- Celso C. Ribeiro, Daniel Aloise, Thiago F. Noronha, Caroline T. M. Rocha, Sebastián Urrutia
- European Journal of Operational Research
- 2008

- Thiago F. Noronha, Andréa C. Santos, Celso C. Ribeiro
- Electronic Notes in Discrete Mathematics
- 2008

- Celso C. Ribeiro, Daniel Aloise, Thiago F. Noronha, Caroline T. M. Rocha, Sebastián Urrutia
- European Journal of Operational Research
- 2008