SGER- Estimation of Binary Choice and Nonparametric Censored Regression Models

SGER-二元选择和非参数删失回归模型的估计

• 批准号: 0213621
• 负责人: Shakeeb Khan
• 金额: $ 2万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-03-01 至 2003-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0213621&HistoricalAwards=false
• 关键词: SGER; Estimation; Binary; Choice; Nonparametric

This exploratory research is comprised of two distinct parts. The first and main part considers estimation of a binary choice model. This is a statistical model where the dependent variable (the one researchers are trying to explain or predict using observed explanatory variables) can take only two values. For this model, there are three values applied researchers are interested in estimating. One is the set of the parameters of the prediction function, which can be used to predict outcomes. The other values of interest are choice probabilities and marginal effects. The former provides researchers with the probability of observing a value of the dependent variable as a function of observed explanatory variables, and the latter determines the effect of a change in the value of the explanatory variable on this probability. Existing estimation either cannot simultaneously estimate all values of interest, or they require very strict assumptions on the relationship between the dependent and explanatory variables. In contrast, the procedures developed in this research project do not impose strict assumptions, yet enable joint estimation of the three values of interest. The second part of this research involves the estimation of a censored regression model, which is a statistical model where the dependent variable is never observed to take a value exceeding a fixed constant, referred to here as the censoring point. Many data sets encountered in applied work exhibit this model's features. This research project develops a new procedure which enables estimation of the prediction function in the region beyond the censoring point. This cannot be done using existing methods without stronger assumptions.

这项探索性研究由两个不同的部分组成。第一部分也是主要部分考虑二元选择模型的估计。这是一种统计模型，其中因变量（研究人员试图使用观察到的解释变量来解释或预测的变量）只能取两个值。对于该模型，应用研究人员有兴趣估计三个值。一个是预测函数的参数集，可用于预测结果。其他感兴趣的值是选择概率和边际效应。前者为研究人员提供了观察因变量值作为观察到的解释变量的函数的概率，后者确定了解释变量值的变化对此概率的影响。现有的估计要么无法同时估计所有感兴趣的值，要么需要对因变量和解释变量之间的关系做出非常严格的假设。相比之下，本研究项目中开发的程序没有强加严格的假设，但可以联合估计三个感兴趣的值。本研究的第二部分涉及审查回归模型的估计，这是一种统计模型，其中因变量从未观察到超过固定常数（此处称为审查点）的值。应用工作中遇到的许多数据集都展示了该模型的特征。该研究项目开发了一种新程序，可以估计审查点之外的区域中的预测函数。如果没有更强的假设，使用现有方法无法做到这一点。