We describe the quantitative modeling techniques that are used in horizontal merger review for the evaluation of unilateral effects, and discuss how the 2010 Horizontal Merger Guidelines helped legitimize these methods and motivate scholarly research. We cover markets that feature differentiated products pricing, auctions and negotiations, and homogeneous products, in turn. We also develop connections between quantitative modeling and market concentration screens that are based on the Herfindahl-Hirschman Index (HHI).

中文翻译：

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评价合并单方面影响的定量方法

我们描述了水平合并审查中用于评估单方面影响的定量建模技术，并讨论了《 2010年水平合并指南》如何帮助使这些方法合法化并激发了学术研究。我们涵盖的市场依次具有差异化的产品价格，拍卖和谈判以及同类产品。我们还根据Herfindahl-Hirschman指数（HHI）在定量建模和市场集中度筛选之间建立联系。