Graph Coloring Lower Bounds from Decision Diagrams
Graph Coloring Lower Bounds from Decision Diagrams
复制标题
决策图中的图形着色下界
DOI:
10.1007/978-3-030-45771-6_31
复制
发表时间:
2020
影响因子:
6.3
通讯作者:
W. V. Hoeve
中科院分区:
文献类型:
--
作者:
W. V. Hoeve
We introduce an iterative framework for computing lower bounds to graph coloring problems. We utilize relaxed decision diagrams to compactly represent an exponential set of color classes, or independent sets, some of which may contain edge conflicts. Our procedure uses minimum network flow models to compute lower bounds on the coloring number and identify conflicts. Infeasible color classes associated with these conflicts are removed by refining the decision diagram. We prove that in the best case, our approach may use exponentially smaller diagrams than exact diagrams for proving optimality. We also provide an experimental evaluation on benchmark instances, and report an improved lower bound for one open instance.
DOI:
10.1007/978-3-319-77404-6_47
发表时间:
2017-06
期刊:
--
影响因子:
--
作者:
Adalat Jabrayilov;Petra Mutzel
通讯作者:
Adalat Jabrayilov;Petra Mutzel