Inference for single-index quantile regression models with profile optimization
基于剖面优化的单指标分位数回归推断AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要直接研究单指标分位数回归的估计、检验和模型选择,对应分位数与分布方向。
基于剖面优化的单指标分位数回归推断AI 解读 ↓
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Single index models offer greater flexibility in data analysis than linear models but retain some of the desirable properties such as the interpretability of the coefficients. We consider a pseudo-profile likelihood approach to estimation and testing for single-index quantile regression models. We establish the asymptotic normality of the index coefficient estimator as well as the optimal convergence rate of the nonparametric function estimation. Moreover, we propose a score test for the index coefficient based on the gradient of the pseudo-profile likelihood, and employ a penalized procedure to perform consistent model selection and model estimation simultaneously. We also use Monte Carlo studies to support our asymptotic results, and use an empirical example to illustrate the proposed method.