一般网络中弹性效用价格竞争博弈的寡占均衡  

Oligopoly Equilibrium of Price Competition Game with Elastic Utility in General Networks

作　　者：洪永发[1,2] 徐娟[1] 

机构地区：[1]同济大学计算机科学与技术系,上海201804 [2]山东科技大学信息科学与工程学院,山东青岛266510

出　　处：《同济大学学报（自然科学版）》2009年第4期550-554,共5页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金资助项目(90612006,60534060);国家“九七三”高技术研究发展计划资助项目(2007CB316502);山东科技大学“春蕾计划”资助项目

摘　　要：讨论了具有保留效用的一般网络的多个服务提供商之间的价格竞争博弈问题.给出了用户均衡的定义,由服务提供商所给价格和对应价格的用户均衡,给出了寡占均衡的定义.根据Wardrop原理,给出了用户均衡流量分配的特征刻画.此处,还给出了寡占均衡的特征刻画,并比较了寡占均衡流量分配与社会最优流量分配之间的性能,证明了在寡占均衡时,每个OD(源-目的)对的流量分配总和总是小于等于在社会最优情况下的流量分配总和.This paper presents a study of the price competition game among multiple service providers in a general network with elastic utility. The paper also presents the definition of a user equilibrium and the oligopoly equilibrium as the equilibrium prices set by the service provider and the corresponding user equilibrium. For a given price, a characterization of the user equilibrium of flow rates is elaborated under the Wardrop assumption. Furthermore, the oligopoly equilibrium is explicitly characterized, and its performance relative to the social optimum is studied. The study results show that the aggregate flow allocations at the oligopoly equilibrium are always less than and equal to the social equilibrium for each origin-destination（OD） pair.

关 键 词：网络服务提供商 价格竞争 博弈 均衡 寡占 弹性效用 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]