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arXiv cs/0409054cs.GTmath.OC
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Stackelberg网络定价的近似算法

An Approximation Algorithm for Stackelberg Network Pricing

S. Roch, P. Marcotte, G. Savard

摘要:

我们考虑的问题,最大化的收入提出了从通行费设置在弧的运输网络,约束下,用户被分配到收费兼容的最短路径。我们首先证明了这个问题是强NP-困难的。然后,我们提供了一个多项式时间算法的最坏情况下的精度保证${1/2}\log_2 m_T+1$,其中$m_T$表示收费弧的数量。最后,我们表明,近似是紧的自然松弛通过构建一个家庭的情况下,达到松弛间隙。

英文摘要:

We consider the problem of maximizing the revenue raised from tolls set on the arcs of a transportation network, under the constraint that users are assigned to toll-compatible shortest paths. We first prove that this problem is strongly NP-hard. We then provide a polynomial time algorithm with a worst-case precision guarantee of ${1/2}\log_2 m_T+1$, where $m_T$ denotes the number of toll arcs. Finally we show that the approximation is tight with respect to a natural relaxation by constructing a family of instances for which the relaxation gap is reached.

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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