具有不对称网络外部性和纵向差异化的产品竞争策略  

Competitive Strategies of Product with Vertical Differentiation and Asymmetric Network Externality

作　　者：刁新军[1] 杨德礼[2] 佟斌[2] 

机构地区：[1]中国科学院研究生院管理学院,北京100190 [2]大连理工大学管理与经济学部,辽宁大连116024

出　　处：《运筹与管理》2011年第3期23-29,共7页Operations Research and Management Science

基　　金：国家自然科学基金资助项目(70672092);中国博士后基金(20100317220090460562)

摘　　要：在产品不完全覆盖市场中,研究具有不对称网络外部性的纵向差异化产品的Bertrand价格竞争或Cournot数量竞争策略。研究表明,两产品在Cournot数量竞争中的市场利润和社会福利都大于在Bertrand价格竞争中的市场利润和社会福利。在Bertrand价格竞争或Cournot数量竞争中,当低质量产品的网络外部性较大且满足一定条件时,低质量产品也可以获得较大的市场利润;当高质量产品具有较大网络外部性,或网络外部性虽然较小但满足一定条件条件,网络外部性相等或产品都不具有网络外部性时,高质量产品获得较大的市场利润。随着网络外部性的增强,Cournot-Nash均衡点并不稳定,在重复博弈以后,均衡点向Bertrand-Nash均衡点靠近。Under incomplete coverage market,competitive strategies of Cournot or Bertrand of product with vertical differentiation and network externality are researched.According to the result,market profit and social welfare of product in Cournot competition are greater than those in Bertrand competition.In Bertrand competition or Cournot competition,when network externality low quality product is greater than that of high quality product and satisfies certain condition,low quality product obtains greater market profit.When network externality of high quality product is greater than that of low quality product,or less than that of low quality product and satisfies certain condition,or network externality is equal or is zero,high quality product obtains greater market profit.With network externality increasing,equilibrium point of Cournot-Nash which is not stable in multi-game,will eventually come close to Bertrand-Nash equilibrium point.

关 键 词：不完全覆盖 纵向差异 COURNOT竞争 Bertrand竞争1 

分 类 号：F224[经济管理—国民经济]