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CIE
2007
Springer
15 years 6 months ago
Computational Complexity of Constraint Satisfaction
Abstract. The input to a constraint satisfaction problem (CSP) consists of a set of variables, each with a domain, and constraints between these variables formulated by relations o...
Heribert Vollmer
CP
2004
Springer
15 years 3 months ago
A Hyper-arc Consistency Algorithm for the Soft Alldifferent Constraint
This paper presents an algorithm that achieves hyper-arc consistency for the soft alldifferent constraint. To this end, we prove and exploit the equivalence with a minimum-cost flo...
Willem Jan van Hoeve
CONSTRAINTS
2010
126views more  CONSTRAINTS 2010»
14 years 12 months ago
Lexicographically-ordered constraint satisfaction problems
Abstract. We describe a simple CSP formalism for handling multi-attribute preference problems with hard constraints, one that combines hard constraints and preferences so the two a...
Eugene C. Freuder, Robert Heffernan, Richard J. Wa...
CATS
2008
15 years 1 months ago
Tractable Cases of the Extended Global Cardinality Constraint
We study the consistency problem for extended global cardinality (EGC) constraints. An EGC constraint consists of a set X of variables, a set D of values, a domain D(x) D for eac...
Marko Samer, Stefan Szeider
PEPM
2007
ACM
15 years 6 months ago
Quasi-terminating logic programs for ensuring the termination of partial evaluation
A logic program strongly quasi-terminates when only a finite number of distinct atoms (modulo variable renaming) are derivable from any given query and computation rule. This noti...
Germán Vidal