半参数模型是微观计量经济学里的一个热门研究课题。本书针对半参数模型作出了如下贡献：
**，修正了平均导数估计值的一些弱点。
第二，把部分红性模型的罗宾森（Robinson)方法推广到非线性模型。
第三，把半参数方法应用到失落数据问题。
第四，就特定模型计算了半参数估计值的上界。
第五，把半参数方法推广到时间序列。
第六，用半参数方法对计量经济学模型进行统计推断。

前言
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