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arXiv 0812.0320cs.DScs.GT
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Stackelberg网络定价难以近似

Stackelberg Network Pricing is Hard to Approximate

Gwenaël Joret

摘要:

在Stackelberg网络定价问题中,人们必须将费率分配给给定运输网络的某个弧子集。其目的是最大化网络用户支付的金额,知道一旦资费固定,用户将采取最短的st路径。Roch,Savard,and Marcotte(Networks,Vol.46(1),57-67,2005)证明了该问题是NP难的,并给出了一个O(log m)-近似算法,其中m表示待定价的弧数.在本文中,我们证明了这个问题也是APX困难的。

英文摘要:

In the Stackelberg Network Pricing problem, one has to assign tariffs to a certain subset of the arcs of a given transportation network. The aim is to maximize the amount paid by the user of the network, knowing that the user will take a shortest st-path once the tariffs are fixed. Roch, Savard, and Marcotte (Networks, Vol. 46(1), 57-67, 2005) proved that this problem is NP-hard, and gave an O(log m)-approximation algorithm, where m denote the number of arcs to be priced. In this note, we show that the problem is also APX-hard.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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