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DISOPT
2010
132views more  DISOPT 2010»
15 years 6 months ago
General approximation schemes for min-max (regret) versions of some (pseudo-)polynomial problems
While the complexity of min-max and min-max regret versions of most classical combinatorial optimization problems has been thoroughly investigated, there are very few studies abou...
Hassene Aissi, Cristina Bazgan, Daniel Vanderpoote...
DAM
2008
108views more  DAM 2008»
15 years 6 months ago
On the complexity of the multicut problem in bounded tree-width graphs and digraphs
Given an edge- or vertex-weighted graph or digraph and a list of source-sink pairs, the minimum multicut problem consists in selecting a minimum weight set of edges or vertices wh...
Cédric Bentz
GC
2008
Springer
15 years 6 months ago
A Bijection for Eulerian-equivalence Classes of Totally Cyclic Orientations
Gioan showed that the number of cycle reversing classes of totally cyclic orientations of a given graph can be calculated as an evaluation of the corresponding Tutte polynomial. We...
Beifang Chen, Arthur L. B. Yang, Terence Y. J. Zha...
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JFR
2008
87views more  JFR 2008»
15 years 6 months ago
Hough based terrain classification for realtime detection of drivable ground
The usability of mobile robots for surveillance, search and rescue missions can be significantly improved by intelligent functionalities decreasing the cognitive load on the opera...
Jann Poppinga, Andreas Birk 0002, Kaustubh Pathak
JCT
2007
110views more  JCT 2007»
15 years 6 months ago
Bijective counting of Kreweras walks and loopless triangulations
Abstract. We consider lattice walks in the plane starting at the origin, remaining in the first quadrant i, j ≥ 0 and made of West, South and North-East steps. In 1965, Germain ...
Olivier Bernardi