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» On Conditional Covering Problem
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ESA
2010
Springer
273views Algorithms» more  ESA 2010»
15 years 7 months ago
Minimum Vertex Cover in Rectangle Graphs
We consider the Minimum Vertex Cover problem in intersection graphs of axis-parallel rectangles on the plane. We present two algorithms: The first is an EPTAS for non-crossing rect...
Reuven Bar-Yehuda, Danny Hermelin, Dror Rawitz
FOSSACS
2009
Springer
16 years 24 days ago
Minimal Cost Reachability/Coverability in Priced Timed Petri Nets
Abstract. We extend discrete-timed Petri nets with a cost model that assigns token storage costs to places and firing costs to transitions, and study the minimal cost reachability...
Parosh Aziz Abdulla, Richard Mayr
SIGECOM
2003
ACM
92views ECommerce» more  SIGECOM 2003»
15 years 11 months ago
Strategyproof cost-sharing mechanisms for set cover and facility location games
Strategyproof cost-sharing mechanisms, lying in the core, that recover 1/a fraction of the cost, are presented for the set cover and facility location games: a=O(log n) for the fo...
Nikhil R. Devanur, Milena Mihail, Vijay V. Vaziran...
BMCBI
2007
154views more  BMCBI 2007»
15 years 6 months ago
Bounds on the distribution of the number of gaps when circles and lines are covered by fragments: Theory and practical applicati
Background: The question of how a circle or line segment becomes covered when random arcs are marked off has arisen repeatedly in bioinformatics. The number of uncovered gaps is o...
John Moriarty, Julian R. Marchesi, Anthony Metcalf...
DAM
2008
139views more  DAM 2008»
15 years 6 months ago
Covering symmetric semi-monotone functions
We define a new set of functions called semi-monotone, a subclass of skew-supermodular functions. We show that the problem of augmenting a given graph to cover a symmetric semi-mo...
Roland Grappe, Zoltán Szigeti