基于三角形分布的纵向产品差异化模型  

A model of vertical product differentiation with a triangular demand distribution

作　　者：胡建兵[1] 

机构地区：[1]华侨大学工商管理学院,福建泉州200093

出　　处：《哈尔滨工程大学学报》2008年第4期425-431,共7页Journal of Harbin Engineering University

基　　金：上海市重点学科资助项目(T0502)

摘　　要：在研究纵向产品差异化竞争时,鉴于现有研究以消费者偏好服从均匀分布为前提可能忽略一些重要的规律,改用三角形分布代替均匀分布,通过建模发现,稳定均衡和不稳定均衡都会出现,稳定均衡时高质量产品表现出竞争优势;不稳定均衡时,高质量产品的优势不明显,甚至处于劣势,从不稳定均衡演化为稳定均衡,需要解决价格或者消费者对产品质量的认知问题.而总体趋势是,产品质量和企业利润随着消费者消费能力和对产品质量认知度的提高而提高,而且后者比前者提高的速度更快.In present study of vertical product differentiation, most literatures assume that the preferences of consumers are uniformly distributed over an interval, with neither a unique ＇ best＇ product, nor the relatively small group of ＇ better＇ products. This hypothesis ignores some basic rules of market behavior. So we use a triangular distribution of demand to replace the uniform distribution. Through the modeling procedure, we found that, within this triangular area, neither a stable equilibrium nor an unstable equilibrium appears. In the stable equilibrium state, the higher quality products are more competitive; while in the unstable equilibrium state, the higher quality products are not obviously competitive, sometimes even in a bad situation. Evolution from an unstable equilibrium to a stable one depends on the prices or the consumer＇s recognition of the quality of products, and thus becoming willing to pay a premium for them. On the whole, both product quality and profits of firms increase with increases in consumers＇ purchasing power and their recognition degree of product quality. Obviously the latter increases more rapidly than the former.

关 键 词：三角形分布 纵向产品差异化 均衡 

分 类 号：F276[经济管理—企业管理]