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CP
2007
Springer
16 years 25 days ago
A Compression Algorithm for Large Arity Extensional Constraints
We present an algorithm for compressing table constraints representing allowed or disallowed tuples. This type of constraint is used for example in configuration problems, where t...
George Katsirelos, Toby Walsh
CP
2007
Springer
16 years 25 days ago
Dynamic Management of Heuristics for Solving Structured CSPs
Abstract. This paper deals with the problem of solving efficiently structured CSPs. It is well known that (hyper)tree-decompositions offer the best approaches from a theoretical v...
Philippe Jégou, Samba Ndiaye, Cyril Terriou...
CPAIOR
2007
Springer
16 years 25 days ago
A Position-Based Propagator for the Open-Shop Problem
The Open-Shop Problem is a hard problem that can be solved using Constraint Programming or Operation Research methods. Existing techniques are efficient at reducing the search tree...
Jean-Noël Monette, Yves Deville, Pierre Dupon...
CSCLP
2007
Springer
16 years 25 days ago
Quasi-Linear-Time Algorithms by Generalisation of Union-Find in CHR
Abstract. The union-find algorithm can be seen as solving simple equations between variables or constants. With a few lines of code change, we generalise its implementation in CHR...
Thom W. Frühwirth
CSL
2007
Springer
16 years 25 days ago
Game Characterizations and the PSPACE-Completeness of Tree Resolution Space
The Prover/Delayer game is a combinatorial game that can be used to prove upper and lower bounds on the size of Tree Resolution proofs, and also perfectly characterizes the space ...
Alexander Hertel, Alasdair Urquhart