Multi-Dimensional Product Differentiation
2 作者信息
Qihong Liu
Department of Economics, University of Oklahoma
Jie Shuai
Wenlan School of Business, Zhongnan University of Economics and Law
3 出处
Qihong Liu, Jie Shuai. Multi-Dimensional Product Differentiation[J]. Front. Econ. China, 2019, 14(4): 497-535.
链接
http://journal.hep.com.cn/fec/EN/10.3868/s060-008-019-0021-1
http://journal.hep.com.cn/fec/EN/Y2019/V14/I4/497
4 摘要
Abstract: We analyze product differentiation in a multi-dimensional model with non-uniform consumer distribution. The level of product differentiation is measured by both unit transport costs and firms’ locations. Our analysis concerns both measures. First, fixing firms’ locations, we show that equilibrium prices can increase or decrease with unit transport costs. The overall result depends on the interplay of a shifting effect and a rotating effect—the latter exists only in multi-dimensional models. Second, fixing unit transport costs, we find that under non-uniform distribution, there may exist no equilibrium where firms maximize differentiation on one dimension but minimize differentiation on other dimensions. Instead, there may exist an equilibrium where firms choose intermediate locations, contrary to common findings in existing studies which assume uniform distribution.
摘要:我们研究了消费者非均匀分布的多维模型下产品差异化问题。其中产品差异化的程度由单位交通成本和企业定位来衡量。我们的研究分别考察了这两种衡量。首先,固定企业定位,我们发现单位交通成本的增加可能提高或者降低均衡价格。总的效果取决于平移效应和旋转效应的交互影响—后者只存在于多维模型中。其次,固定单位交通成本,我们发现当消费者非均匀分布时,企业选择在一个维度上最大化差异而在其它维度上最小化差异可能不是均衡。而与已有假设消费者均匀分布的研究结论相反,可能出现企业选择中等程度差异化的均衡。
5. 作者简介
刘其宏:奥克拉荷马大学经济系教授,Information Economics and Policy副主编。
研究领域:产业组织、微观经济学、博弈论。目前研究:平台与双边市场、航空业、定价。
帅杰: 中南财经政法大学文澜学院副教授,研究领域:微观经济学、产业组织、博弈论。