Logit模型在企业兼并市场绩效评价中的应用

本文采用后芝加哥学派对垄断的定义,设计了一个基于Logit模型的消费者需求函数,通过数值模拟的方法计算差异化产品企业兼并产生的市场绩效,最后用一组模拟数据对整个评价过程进行了检验。结果表明,一些导致市场集中度大幅上升的企业兼并,由于节约了边际成本,使兼并后企业的利润和竞争力大大提高,但并不会抬高相关市场的价格水平对消费者无害,因此不存在垄断效应。

An Application of Logit Model in the Market Performance Evaluation of Corporate Merger

Adopts Post-Chicago School’s definition of monopoly,this paper designs a consumer demand function based on Logit model,computes the market performance of differentiated products firms merger by a numerical simulation approach,finally tests the whole evaluation process by a group of simulated data.The result shows that merger which induces concentration soaring wouldn’t raise price level,meanwhile, sharply increases post-merger firm’s profit and competitiveness for the reason of marginal cost reduction.Consequently,such merger is harmless to consumer and doesn’t give rise to monopolistic effects.