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COMPGEOM
2003
ACM
14 years 18 days ago
Loops in reeb graphs of 2-manifolds
Given a Morse function over a 2-manifold with or without boundary, the Reeb graph is obtained by contracting the connected components of the level sets to points. We prove tight u...
Kree Cole-McLaughlin, Herbert Edelsbrunner, John H...
SAGT
2009
Springer
108views Game Theory» more  SAGT 2009»
14 years 1 months ago
On the Planner's Loss Due to Lack of Information in Bayesian Mechanism Design
In this paper we study a large class of resource allocation problems with an important complication, the utilization cost of a given resource is private information of a profit ma...
José R. Correa, Nicolas Figueroa
FC
2010
Springer
135views Cryptology» more  FC 2010»
13 years 11 months ago
Multichannel Protocols to Prevent Relay Attacks
A number of security systems, from Chip-and-PIN payment cards to contactless subway and train tokens, as well as secure localization systems, are vulnerable to relay attacks. Encry...
Frank Stajano, Ford-Long Wong, Bruce Christianson
UAI
2003
13 years 8 months ago
Approximate Inference and Constrained Optimization
Loopy and generalized belief propagation are popular algorithms for approximate inference in Markov random fields and Bayesian networks. Fixed points of these algorithms correspo...
Tom Heskes, Kees Albers, Bert Kappen
EJC
2008
13 years 7 months ago
On digraph coloring problems and treewidth duality
It is known that every constraint-satisfaction problem (CSP) reduces, and is in fact polynomially equivalent, to a digraph coloring problem. By carefully analyzing the constructio...
Albert Atserias