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» Approximating Extended Answer Sets
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ICALP
2009
Springer
16 years 6 months ago
SDP-Based Algorithms for Maximum Independent Set Problems on Hypergraphs
Abstract. This paper deals with approximations of maximum independent sets in non-uniform hypergraphs of low degree. We obtain the first performance ratio that is sublinear in term...
Elena Losievskaja, Geir Agnarsson, Magnús M...
SIAMJO
2008
87views more  SIAMJO 2008»
15 years 5 months ago
Linear Regularity for a Collection of Subsmooth Sets in Banach Spaces
Using variational analysis, we study the linear regularity for a collection of finitely many closed sets. In particular, we extend duality characterizations of the linear regularit...
Xi Yin Zheng, Kung Fu Ng
4OR
2010
137views more  4OR 2010»
15 years 6 months ago
Extended formulations in combinatorial optimization
This survey is concerned with the size of perfect formulations for combinatorial optimization problems. By "perfect formulation", we mean a system of linear inequalities...
Michele Conforti, Gérard Cornuéjols,...
IJCAI
1989
15 years 7 months ago
Logic Programming with General Clauses and Defaults Based on Model Elimination
The foundations of a class of logic programming systems with the expressive power of full first-order logic and a non-monotonic component is addressed. The underlying refutation m...
Marco A. Casanova, Ramiro A. de T. Guerreiro, Andr...
JCNS
2000
67views more  JCNS 2000»
15 years 5 months ago
Renewal-Process Approximation of a Stochastic Threshold Model for Electrical Neural Stimulation
In a recent set of modeling studies we have developed a stochastic threshold model of auditory nerve response to single biphasic electrical pulses (Bruce et al., 1999c) and moderat...
Ian C. Bruce, Laurence S. Irlicht, Mark W. White, ...