Titlebook: Integration of AI and OR Techniques in Constraint Programming for Combinatorial Optimization Problem; 9th International Co Nicolas Beldicea

整顿

,: A Combined Approach for Solving Constraints over Finite Domains and Arrays,matically ill-conditioned for constraints over arrays. In this paper, we propose an approach combining both global symbolic reasoning and local filtering in order to solve constraint systems involving arrays (with accesses, updates and size constraints) and finite-domain constraints over their eleme

牙齿

Variable Ordering for the Application of BDDs to the Maximum Independent Set Problem,to a combinatorial optimization problem. It also influences the quality of the objective function bound provided by a limited-width relaxation of the BDD. We investigate these effects for the maximum independent set problem. By identifying variable orderings for the BDD, we show that the width of an

动脉

Graph Coloring Facets from All-Different Systems,ate a graph coloring problem as a system of all-different constraints. By analyzing the polyhedral structure of alldiff systems, we obtain facet-defining inequalities that can be mapped to valid cuts in the classical 0-1 model of the problem. We focus on cuts corresponding to cyclic structures and s

清真寺

Complete Characterization of Near-Optimal Sequences for the Two-Machine Flow Shop Scheduling Proble the vertices of a permutation lattice..We introduce two approaches, based on properties derived from the analysis of permutation lattices, for characterizing large sets of near-optimal solutions. In the first approach, we look for a sequence of minimum level in the lattice, since this solution is l

promote

Global Cyclic Cumulative Constraint, a set of limited capacity resources. The objective is to find an assignment of start times to activities such that the feasible repetition period . is minimized. Cyclic scheduling is an effective method to maximally exploit available resources by partially overlapping schedule repetitions. In our p

interpose

A Computational Geometry-Based Local Search Algorithm for Planar Location Problems,roblems. We are motivated by applications in areas such as telecommunications network design, warehouse location and other problems in which we wish to select an optimal set of locations from a two dimensional plane. The problems we are interested in are so large that they are ideal candidates for c

织物

The Conjunction of Interval A, Constraints, variable and value domains are intervals. We investigate the conjunction of . constraints of this type. We prove that checking for satisfiability – and thus, enforcing bound consistency – can be done in polynomial time. The proof is based on a specific decomposition that can be used as such to filt