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CP
2007
Springer
14 years 2 months ago
Solution Directed Backjumping for QCSP
In this paper we present new techniques for improving backtracking based Quantified Constraint Satisfaction Problem (QCSP) solvers. QCSP is a generalization of CSP in which variab...
Fahiem Bacchus, Kostas Stergiou
CP
2003
Springer
14 years 1 months ago
Using the Breakout Algorithm to Identify Hard and Unsolvable Subproblems
Abstract. Local search algorithms have been very successful for solving constraint satisfaction problems (CSP). However, a major weakness has been that local search is unable to de...
Carlos Eisenberg, Boi Faltings
PRICAI
2004
Springer
14 years 1 months ago
Solving Over-Constrained Temporal Reasoning Problems Using Local Search
Temporal reasoning is an important task in many areas of computer science including planning, scheduling, temporal databases and instruction optimisation for compilers. Given a kno...
Matthew Beaumont, John Thornton, Abdul Sattar, Mic...
CP
1999
Springer
14 years 10 days ago
Optimal Distributed Arc-Consistency
This paper presents DisAC-9, the first optimal distributed algorithm performing the arc-consistency of a constraint network. Our method is optimal according to the number of messa...
Youssef Hamadi
AI
1998
Springer
14 years 8 days ago
A Heuristic Incremental Modeling Approach to Course Timetabling
Abstract. The general timetabling problem is an assignment of activities to xed time intervals, adhering to a prede ned set of resource availabilities. Timetabling problems are di ...
Don Banks, Peter van Beek, Amnon Meisels