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SIAMDM
2010
133views more  SIAMDM 2010»
13 years 8 months ago
Drop Cost and Wavelength Optimal Two-Period Grooming with Ratio 4
We study grooming for two-period optical networks, a variation of the traffic grooming problem for WDM ring networks introduced by Colbourn, Quattrocchi, and Syrotiuk. In the two-...
Jean-Claude Bermond, Charles J. Colbourn, Lucia Gi...
CORR
2011
Springer
205views Education» more  CORR 2011»
13 years 1 months ago
Algorithms for Implicit Hitting Set Problems
A hitting set for a collection of sets is a set that has a nonempty intersection with each set in the collection; the hitting set problem is to find a hitting set of minimum card...
Karthekeyan Chandrasekaran, Richard Karp, Erick Mo...
TVCG
2012
182views Hardware» more  TVCG 2012»
12 years 2 days ago
Coherent Time-Varying Graph Drawing with Multifocus+Context Interaction
—We present a new approach for time-varying graph drawing that achieves both spatiotemporal coherence and multifocus+context visualization in a single framework. Our approach uti...
Kun-Chuan Feng, Chaoli Wang, Han-Wei Shen, Tong-Ye...
4OR
2004
84views more  4OR 2004»
13 years 9 months ago
Non-classical preference models in combinatorial problems: Models and algorithms for graphs
This is a summary of the most important results presented in the author's PhD thesis (Spanjaard, 2003). This thesis, written in French, was defended on 16 December 2003 and su...
Olivier Spanjaard
COLOGNETWENTE
2010
13 years 6 months ago
A Branch-and-price Approach to the k-Clustering Minimum Biclique Completion Problem
Given a bipartite graph G = (S, T, E), we consider the problem of finding k bipartite subgraphs, called "clusters", such that each vertex i of S appears in exactly one o...
Stefano Gualandi, Francesco Maffioli, Claudio Magn...