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stat.ME2022
A Soft-Thresholding Operator for Sparse Time-Varying Effects in Survival Models
Yuan Yang, Jian Kang, Yi Li
We consider a class of Cox models with time-dependent effects that may be zero over certain unknown time regions or, in short, sparse time-varying effects. The model is particularl…
stat.ME2019★ 4 cited
Finite-Sample Two-Group Composite Hypothesis Testing via Machine Learning
Tianyu Zhan, Jian Kang
In the problem of composite hypothesis testing, identifying the potential uniformly most powerful (UMP) unbiased test is of great interest. Beyond typical hypothesis settings with…