Variable Screening via Quantile Partial Correlation
基于分位数偏相关的变量筛选AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确围绕条件分位数线性回归进行变量筛选,直接对应分位数与分布效应细分中的分位数方法。
基于分位数偏相关的变量筛选AI 解读 ↓
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In quantile linear regression with ultra-high dimensional data, we propose an algorithm for screening all candidate variables and subsequently selecting relevant predictors. Specifically, we first employ quantile partial correlation for screening, and then we apply the extended Bayesian information criterion (EBIC) for best subset selection. Our proposed method can successfully select predictors when the variables are highly correlated, and it can also identify variables that make a contribution to the conditional quantiles but are marginally uncorrelated or weakly correlated with the response. Theoretical results show that the proposed algorithm can yield the sure screening set. By controlling the false selection rate, model selection consistency can be achieved theoretically. In practice, we proposed using EBIC for best subset selection so that the resulting model is screening consistent. Simulation studies demonstrate that the proposed algorithm performs well, and an empirical example is presented.