论经营者集中单边效果分析方法及发展

On the Analysis Method and Development of the Unilateral Effect of Concentration

仿真模型分析法可基于需求系统直接评估经营者集中的单边效果,但也受到假定条件、分析参数以及模型建构不能反映所有情况的制约。市场结构模型分析法着重从市场集中度与市场份额的变化来分析单边效果,但囿于HHI测试本身的不精准性,其结论也难以紧密契合市场的现实情况。新的SIEC测试分析法是对前两者的发展,其大量采纳计量经济学的分析方法与研究成果,在一定程度上弥补了前两者的不足。但鉴于市场的变化性和复杂性,应视具体情况,综合运用上述方法来准确评估经营者集中的单边效果。

The simulation model analysis can be based on the needs of system operators to directly assess the concentration of unilateral effects, but also subject to assumptions, analysis parameters, and model construction does not reflect all the constraints of the situation. Market Structure model analysis mainly from changes in market concentration and market share to unilateral effects analysis, but constrained by HHI test itself is not accurate, its conclusion is not closely fit the reality of the market. The new SIEC test and analysis method is the development of the former two, which a lot of analysis and research methods adopted econometrics, to some extent, make up for the lack of the former two. However, in view of the changes in the market and the complexity of the specific circumstances, the comprehensive use of the above methods to accurately assess the unilateral effects of concentration.