Sciweavers

CP
2007
Springer
13 years 11 months ago
A Case for Simple SAT Solvers
As SAT becomes more popular due to its ability to handle large real-world problems, progress in efficiency appears to have slowed down over the past few years. On the other hand, w...
Jinbo Huang
CP
2007
Springer
13 years 11 months ago
GAC Via Unit Propagation
In this paper we argue that an attractive and potentially very general way of achieving generalized arc consistency (GAC) on a constraint is by using unit propagation (UP) over a C...
Fahiem Bacchus
CP
2007
Springer
13 years 11 months ago
Limitations of Restricted Branching in Clause Learning
The techniques for making decisions, i.e., branching, play a central role in complete methods for solving structured CSP instances. In practice, there are cases when SAT solvers be...
Matti Järvisalo, Tommi A. Junttila
CP
2007
Springer
13 years 11 months ago
Solving the Salinity Control Problem in a Potable Water System
Salinity is the relative concentration of salts in water. In a city of southern China, the local water supply company pumps water from a nearby river for potable use. During the wi...
Chiu Wo Choi, Jimmy Ho-Man Lee
CP
2007
Springer
13 years 11 months ago
An Integrated White+Black Box Approach for Designing and Tuning Stochastic Local Search
Abstract. Stochastic Local Search (SLS) is a simple and effective paradigm for attacking a variety of Combinatorial (Optimization) Problems (COP). However, it is often non-trivial...
Steven Halim, Roland H. C. Yap, Hoong Chuin Lau
CP
2007
Springer
13 years 11 months ago
Breaking Value Symmetry
Symmetry is an important factor in solving many constraint satisfaction problems. One common type of symmetry is when we have symmetric values. We can eliminate such value symmetr...
Toby Walsh
CP
2007
Springer
13 years 11 months ago
Scheduling for Cellular Manufacturing
Abstract. Alcatel-Lucent is a major player in the eld of telecommunications. One of the products it oers to network operators is wireless infrastructure such as base stations. Su...
Roman van der Krogt, James Little, Kenneth Pulliam...
CP
2007
Springer
13 years 11 months ago
Constraint Symmetry for the Soft CSP
We introduce a definition of constraint symmetry for soft CSPs, based on the definition of constraint symmetry for classical CSPs. We show that the constraint symmetry group of a...
Barbara M. Smith, Stefano Bistarelli, Barry O'Sull...
CP
2007
Springer
13 years 11 months ago
Groupoids and Conditional Symmetry
We introduce groupoids – generalisations of groups in which not all pairs of elements may be multiplied, or, equivalently, categories in which all morphisms are invertible – as...
Ian P. Gent, Tom Kelsey, S. A. Linton, J. Pearson,...
CP
2007
Springer
13 years 11 months ago
Towards Robust CNF Encodings of Cardinality Constraints
Motivated by the performance improvements made to SAT solvers in recent years, a number of different encodings of constraints into SAT have been proposed. Concrete examples are th...
João P. Marques Silva, Inês Lynce