中文摘要：

变量选择在回归分析建模中是一个非常重要的基本问题,在回归模型中应该保留对响应的影响最显著的变量。变量选择在分析实际经济问题中得到广泛的应用。本文以混料模型为基础,主要研究混料模型中的变量选择问题。

英文摘要：

Variable selection is an important and basic content of regression analysis, which could keep the most significant impact in regression model. Variable selection is widely applied to the analysis of economic problems. On the basis of mixture model, variable selection for mixture model is mainly studied in this paper.