Using Cost-Based Solution Densities from TSP Relaxations to Solve Routing Problems

被引:0
|
作者
Coste, Pierre [1 ]
Lodi, Andrea [1 ]
Pesant, Gilles [1 ]
机构
[1] Polytech Montreal, Montreal, PQ, Canada
关键词
SPANNING TREE CONSTRAINT; COUNTING-BASED SEARCH; BOUNDS;
D O I
10.1007/978-3-030-19212-9_12
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
The Traveling Salesman Problem, at the heart of many routing applications, has a few well-known relaxations that have been very effective to compute lower bounds on the objective function or even to perform cost-based domain filtering in constraint programming models. We investigate other ways of using such relaxations based on computing the frequency of edges in near-optimal solutions to a relaxation. We report early empirical results on symmetric instances from TSPLIB.
引用
收藏
页码:182 / 191
页数:10
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