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STACS
2010
Springer
14 years 1 months ago
A Dichotomy Theorem for the General Minimum Cost Homomorphism Problem
Abstract. In the constraint satisfaction problem (CSP), the aim is to find an assignment of values to a set of variables subject to specified constraints. In the minimum cost hom...
Rustem Takhanov
CP
2011
Springer
12 years 8 months ago
Hierarchically Nested Convex VCSP
We introduce tractable classes of VCSP instances based on convex cost functions. Firstly, we show that the class of VCSP instances satisfying the hierarchically nested convexity pr...
Martin C. Cooper, Stanislav Zivny
CP
2003
Springer
14 years 1 months ago
Redundant Modeling for the QuasiGroup Completion Problem
Abstract. The Quasigroup Completion Problem (QCP) is a very challenging benchmark among combinatorial problems, and the focus of much recent interest in the area of constraint prog...
Iván Dotú, Alvaro del Val, Manuel Ce...
AIPS
2003
13 years 10 months ago
Symmetry Reduction for SAT Representations of Transition Systems
Symmetries are inherent in systems that consist of several interchangeable objects or components. When reasoning about such systems, big computational savings can be obtained if t...
Jussi Rintanen
CSCLP
2008
Springer
13 years 10 months ago
Robust Solutions in Unstable Optimization Problems
We consider constraint optimization problems where costs (or preferences) are all given, but some are tagged as possibly unstable, and provided with a range of alternative values. ...
Maria Silvia Pini, Francesca Rossi, Kristen Brent ...