Price-Concentration Analysis in Merger Cases with Differentiated Products
2006/04/11
研討會日期 : 2006-04-11
時間 : 15:00
主講人 : Prof. Walter Beckert
地點 : B棟110會議室
演講者簡介 : Prof. Walter Beckert為Ph.D. in Economics，University of California, Berkley (2000)。
現為Lecturer，Birkbeck College，University of London。
其主要研究領域為Applied and Theoretical Econometrics and Statistics、Microeconomic Theory、Empirical Industrial Organization and Competition Economics及Economics of the Internet, Network Economics。
演講摘要 : This paper considers the empirical assessment of the relationship between prices and number of firms in local markets in geographic or, more generally, characteristic space and its use as evidence in merger cases. It outlines a structural, semi-nonparametric econometric model of competition in such markets, examines its testable implications in terms of price-concentration relationships, and demonstrates that the model is non-parametrically identified. This general approach to price-concentration analysis in differentiated product markets is illustrated in a small-scale parametric application to cinemas in the UK. The application highlights the main decision points faced by an authority when assessing the weight that can be attached to this type of analysis as evidence.
