作　　者： ; ;

机构地区： 深圳大学管理学院

出　　处： 《运筹与管理》 2009年第3期144-152,共9页

摘　　要： 在双寡占同质产品电子市场情形下,利用多期动态定价博弈模型的均衡结果,探讨价格分散性及与其相关联的信息价值测度和市场效率等基础理论问题。分析结论表明:(1)在线产品的广告强度越大,其对应电子市场的价格分散度将越高;(2)随着时间的推移,信息价值呈反转的"U"型;(3)消费者剩余是时间t的增函数,生产者剩余则是减函数,社会总体福利与时递增,政策部门降低消费者的网络接入成本是有利于社会福利改善的;(4)忠诚度份额相当的企业应尽可能避开在电子市场同时张贴价格信息,拥有较小忠诚度份额的企业张贴价格的积极性更高。 In the case of duopolistic homogenous goods market, multi-period dynamic pricing game models are used to analyze how the prices in electronic markets evolve with the diffusion of price comparison shopping technology , and price dispersion and the related fundamental theories about how to measure information value and market efficiency are discussed . The results show： （i）Price dispersion degree on electronic markets would be larger with the stronger advertisement promotion of online product. （ii） Information value assumes a inverted U shape with time lapsed. （iii）Consumer surplus is increasing in t , but product surplus is decreasing in it, and social welfare is enhanced with time process , and it is beneficial to enhance social welfare for the policy decision-makers to reduce Internet access costs of consumers. （iv）The firms with the equivalent loyal segment should avoid posting price information at the same time, and the firm with the smaller loyal segment is more willing to post its price.

关 键 词： 信息经济学 电子市场 动态博弈 价格分散度 信息价值 效率

领　　域： [经济管理]