Simultaneous Selection and Inference for Varying Coefficients with Zero Regions: A Soft-Thresholding Approach
Simultaneous Selection and Inference for Varying Coefficients with Zero Regions: A Soft-Thresholding Approach
Varying coefficient models have been used to explore dynamic effects in many scientific areas, such as in medicine, finance, and epidemiology. As most existing models ignore the existence of zero regions, we propose a new soft-thresholded varying coefficient model, where the coefficient functions are piecewise smooth with zero regions. Our …