Sciweavers

79 search results - page 11 / 16
» Arc-Consistency and Arc-Consistency Again
Sort
View
AIMSA
2008
Springer
15 years 4 months ago
Nested Precedence Networks with Alternatives: Recognition, Tractability, and Models
Integrated modeling of temporal and logical constraints is important for solving real-life planning and scheduling problems. Logical constrains extend the temporal formalism by rea...
Roman Barták, Ondrej Cepek
CPAIOR
2005
Springer
15 years 3 months ago
Filtering Algorithms for the NValue Constraint
Abstract. The NValue constraint counts the number of different values assigned to a vector of variables. Propagating generalized arc consistency on this constraint is NP-hard. We ...
Christian Bessière, Emmanuel Hebrard, Brahi...
CPAIOR
2005
Springer
15 years 3 months ago
Combination of Among and Cardinality Constraints
A cardinality constraint imposes that each value of a set V must be taken a certain number of times by a set of variables X, whereas an among constraint imposes that a certain numb...
Jean-Charles Régin
ECAI
2006
Springer
15 years 1 months ago
Inverse Consistencies for Non-Binary Constraints
We present a detailed study of two inverse consistencies for non-binary constraints: relational path inverse consistency (rel PIC) and pairwise inverse consistency (PWIC). These ar...
Kostas Stergiou, Toby Walsh
ECAI
2008
Springer
14 years 12 months ago
Hybrid tractable CSPs which generalize tree structure
The constraint satisfaction problem (CSP) is a central generic problem in artificial intelligence. Considerable progress has been made in identifying properties which ensure tracta...
Martin C. Cooper, Peter G. Jeavons, András ...