Sciweavers

CPAIOR
2006
Springer
13 years 8 months ago
Conflict-Directed A* Search for Soft Constraints
As many real-world problems involve user preferences, costs, or probabilities, constraint satisfaction has been extended to optimization by generalizing hard constraints to soft co...
Martin Sachenbacher, Brian C. Williams
CPAIOR
2006
Springer
13 years 10 months ago
The Timetable Constrained Distance Minimization Problem
We define the timetable constrained distance minimization problem (TCDMP) which is a sports scheduling problem applicable for tournaments where the total travel distance must be mi...
Rasmus V. Rasmussen, Michael A. Trick
CPAIOR
2006
Springer
13 years 10 months ago
AND/OR Branch-and-Bound Search for Pure 0/1 Integer Linear Programming Problems
Abstract. AND/OR search spaces have recently been introduced as a unifying paradigm for advanced algorithmic schemes for graphical models. The main virtue of this representation is...
Radu Marinescu 0002, Rina Dechter
CPAIOR
2006
Springer
13 years 10 months ago
Duality in Optimization and Constraint Satisfaction
We show that various duals that occur in optimization and constraint satisfaction can be classified as inference duals, relaxation duals, or both. We discuss linear programming, su...
John N. Hooker
CPAIOR
2006
Springer
13 years 10 months ago
Open Constraints in a Closed World
We study domain filtering algorithms for open constraints, i.e., constraints that are not a priori defined on specific sets of variables. We present an efficient filtering algorith...
Willem Jan van Hoeve, Jean-Charles Régin
CPAIOR
2006
Springer
13 years 10 months ago
Traveling Tournament Scheduling: A Systematic Evaluation of Simulated Annealling
Abstract. This paper considers all the variants of the traveling tournament prob) proposed in [17, 7] to abstract the salient features of major league baseball (MLB) in the United ...
Pascal Van Hentenryck, Yannis Vergados
CPAIOR
2006
Springer
13 years 10 months ago
Online Stochastic Reservation Systems
This paper considers online stochastic reservation problems, where requests come online and must be dynamically allocated to limited resources in order to maximize profit. Multi-k...
Pascal Van Hentenryck, Russell Bent, Yannis Vergad...
CPAIOR
2006
Springer
13 years 10 months ago
The Power of Semidefinite Programming Relaxations for MAX-SAT
Recently, Linear Programming (LP)-based relaxations have been shown promising in boosting the performance of exact MAX-SAT solvers. We compare Semidefinite Programming (SDP) based ...
Carla P. Gomes, Willem Jan van Hoeve, Lucian Leahu
CPAIOR
2006
Springer
13 years 10 months ago
A Hybrid Column Generation and Constraint Programming Optimizer for the Tail Assignment Problem
Tail Assignment is the problem of assigning flight legs to aircraft while satisfying all operational constraints, and optimizing some objective function. In this article, we presen...
Sami Gabteni, Mattias Grönkvist
CPAIOR
2006
Springer
13 years 10 months ago
Event-Driven Probabilistic Constraint Programming
Real-life management decisions are usually made in uncertain environments, and decision support systems that ignore this uncertainty are unlikely to provide realistic guidance. We ...
Armagan Tarim, Brahim Hnich, Steven David Prestwic...