arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.07794cs.GTmath.OC
收藏

瞬时动态均衡的无政府状态价格

The Price of Anarchy for Instantaneous Dynamic Equilibria

Lukas Graf, Tobias Harks

AI总结:

该研究针对确定性排队模型中的瞬时动态均衡(IDE),分析其无政府状态价格,给出单汇点实例的上界与下界结果,填补了IDE解概念效率研究的空白。

摘要:

我们研究确定性排队模型中的时变流,并探讨瞬时动态均衡(IDE)这一解概念,其中流粒子在每个决策点选择当前最短路径,路径长度由物理通行时间与排队等待时间之和衡量。尽管IDE自上世纪80年代起就被研究,但该解概念的效率仍未被充分了解。我们针对该模型研究无政府状态价格,证明单汇点实例的上界阶为$\u27e8U·τ\u27e9$,其中$U$表示总流入量,$τ$表示边通行时间总和。我们还通过一类相当复杂的实例补充了下界结果,证明下界阶为$Ω(U·\u2009logτ)$。

英文摘要:

We consider flows over time within the deterministic queueing model and study the solution concept of instantaneous dynamic equilibrium (IDE) in which flow particles select at every decision point a currently shortest path. The length of such a path is measured by the physical travel time plus the time spent in queues. Although IDE have been studied since the eighties, the efficiency of the solution concept is not well understood. We study the price of anarchy for this model and show an upper bound of order $\mathcal{O}(U\cdot τ)$ for single-sink instances, where $U$ denotes the total inflow volume and $τ$ the sum of edge travel times. We complement this upper bound with a family of quite complex instances proving a lower bound of order $Ω(U\cdot\logτ)$.

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。

↑