Combinatorial Optimization
Combinatorial Optimization
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组合优化
DOI:
10.1007/978-3-642-32147-4_40
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Huber A
中科院分区:
文献类型:
--
作者:
Huber A
In this paper we investigatek-submodular functions. This natural family of discrete functions includes submodular and bisubmodular functions as the special casesk= 1 andk= 2 respectively.In particular we generalize the known Min-Max-Theorem for submodular and bisubmodular functions. This theorem asserts that the minimum of the (bi)submodular function can be found by solving a maximization problem over a (bi)submodular polyhedron. We define ak-submodular polyhedron, prove a Min-Max-Theorem fork-submodular functions, and give a greedy algorithm to construct the vertices of the polyhedron.