To introduce sample selection model and its estimation method.
介绍样本选择模型及其估计方法。
The proposed sample selection model is tested on UCI dataset, which proves the efficiency of the model.
利用UCI标准数据集对本文所提出的样本选择模型进行测试，实验结果证明了该模型的有效性。
The missing data were analysed with sample selection model and compared with traditional linear regression model.
应用样本选择模型对模拟数据进行分析，并与传统线性回归模型进行比较。
The fifth parts are the empirical analysis and results of analysis. First, carry out sample selection, and then use the model for empirical analysis.
第五部分，实证分析与结果分析，首先进行了样本选取，然后运用模型进行实证分析。
The fifth parts are the empirical analysis and results of analysis. First, carry out sample selection, and then use the model for empirical analysis.
第五部分，实证分析与结果分析，首先进行了样本选取，然后运用模型进行实证分析。
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