线上与线下,联动还是竞争?——基于ISPI和CPI的线上线下价格差异收敛性分析  

Online and Offline, Linkage or Competition?Analysis of Price Differences Convergence Based on ISPI and CPI

作　　者：杜两省[1] 刘发跃[1] 

机构地区：[1]东北财经大学经济学院

出　　处：《投资研究》2014年第7期56-69,共14页Review of Investment Studies

基　　金：国家社科基金重大项目(12&ZD067);国家社科基金一般项目(09BJL052);教育部人文社科基地重大项目(12JJD790008);教育部一般项目(09YJA790026)

摘　　要：在电子商务快速发展的背景下,本文基于一价定理和冰川模型,分析了线上线下价格差异的数据演化和动态调整特征,揭示了线上线下经济体相对态势变化的规律。研究显示:(1)衣着、设备、交通和文化几个主要分项均为收敛序列,证实了线上线下价格总体上满足一价定理。(2)所有分项都存在不同的固定价格差异,它由各分项的价格优势和非价格优势共同决定。(3)总项不收敛而几个主要分项收敛的主要原因是各分项在两类指数中的权重不同。本文结果说明,线上线下价差会持续存在,线上购物随着市场范围扩大继续增长,而线上线下的联动将成为一个重要趋势。s： In the background of the rapid development of e-commerce, based on The Law Of One Price and the Iceberg Model, this article analyzes the data evolution and characteristics of dynamic adjustment of online and offiine price, revealing the rela- tive changes of online and offiine economies. The conclusions are as following： （1） Several major sub-items, including cloth- ing, equipment, transportation and culture, are convergent series, confirming that the price differences still conform to the LOP. （2） All the sub-items have different fixed price difference, which is jointly decided by price advantages and non-price advantag- es. （3） Total items are not convergent, however sub-items are convergent. The main reason is that sub-items have different weights in the two kinds of index. Our results illustrate that the price differences will continually exist, and online shopping will continue to grow as the market expands, and the interaction between online and offiine will become a trend.

关 键 词：线上线下 一价定理 价格差异 ISPI CPI 

分 类 号：F724.6[经济管理—产业经济] F726