ccap国际知名学者讲座第136期
发布日期：2021/12/16 来源： ccap
search and information frictions on global e-commerce platforms: evidence from aliexpress
全球电子商务平台上的搜索和信息摩擦：来自阿里巴巴的证据
报告人：prof. daniel yi xu, duke university
北京时间上午9:00-11:00
形 式：请扫描二维码报名，会议链接将于19日通过邮件发送
we study how search and information frictions shape market dynamics in global e-commerce. observational data and self-collected quality measures from aliexpress establish the existence of search and information frictions. a randomized experiment that offers new exporters exogenous demand and information shocks demonstrates the potential role of sales accumulation in enhancing seller visibility and overcoming these demand frictions. however, we show theoretically and quantitatively that this demand-reinforcement mechanism is undermined by a large number of online exporters. our structural model rationalizes the experimental findings and quantifies efficiency gains from reducing the number of inactive sellers.
本研究探讨搜索和信息摩擦如何影响全球电子商务的市场动态。来自阿里巴巴的数据和收集的质量衡量标准数据证实了搜索和信息摩擦的存在。一个向新出口商提供外生需求和信息冲击的随机实验证明了销售积累在提高卖方知名度和克服搜索和信息摩擦方面的潜在作用。然而，本研究从理论上和实证上表明，这种需求强化机制被大量的在线出口商所破坏。本研究通过构建结构模型，使实验结果合理化，并量化减少不活跃卖家数量带来的效率提升。
daniel yi xu is a professor of economics at duke university and a faculty research associate of the national bureau of economic research. professor xu’s research lies at the intersection of productivity, international trade, and industrial organization. his current research agenda is concentrated on using large-scale microdata to model and estimate a rich set of individual firm decisions, often dynamic, and to investigate how these decisions affect resource allocation, industry performance, and economic growth especially in developing and emerging economies. professor xu’s most recent work has been published in leading economic journals, including the american economic review, the rand journal of economics, the review of economic studies, the review of economic dynamics, and the management science. he is currently the co-editor of the review of economics and statistics and an associate editor of the rand journal of economics and aej: applied. he previously served as the co-editor of the journal of development economics, and associate editor for the economic journal, the journal of industrial economics, the journal of international economics, quantitative economics, and the review of economics and statistics.
