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» A Glimpse of Constraint Satisfaction
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APPROX
2010
Springer
297views Algorithms» more  APPROX 2010»
13 years 9 months ago
Approximating Linear Threshold Predicates
We study constraint satisfaction problems on the domain {-1, 1}, where the given constraints are homogeneous linear threshold predicates. That is, predicates of the form sgn(w1x1 +...
Mahdi Cheraghchi, Johan Håstad, Marcus Isaks...
ECCC
2010
111views more  ECCC 2010»
13 years 8 months ago
Tight Bounds on the Approximability of Almost-satisfiable Horn SAT and Exact Hitting Set}
We study the approximability of two natural Boolean constraint satisfaction problems: Horn satisfiability and exact hitting set. Under the Unique Games conjecture, we prove the fo...
Venkatesan Guruswami, Yuan Zhou
MST
2008
124views more  MST 2008»
13 years 7 months ago
Complexity of Clausal Constraints Over Chains
We investigate the complexity of the satisfiability problem of constraints over finite totally ordered domains. In our context, a clausal constraint is a disjunction of inequaliti...
Nadia Creignou, Miki Hermann, Andrei A. Krokhin, G...
AUSAI
2006
Springer
13 years 11 months ago
Finite Domain Bounds Consistency Revisited
A widely adopted approach to solving constraint satisfaction problems combines systematic tree search with constraint propagation for pruning the search space. Constraint propagati...
Chiu Wo Choi, Warwick Harvey, J. H. M. Lee, Peter ...
AI
2003
Springer
14 years 1 months ago
A Graph Based Backtracking Algorithm for Solving General CSPs
Many AI tasks can be formalized as constraint satisfaction problems (CSPs), which involve finding values for variables subject to constraints. While solving a CSP is an NP-complet...
Wanlin Pang, Scott D. Goodwin