【作者(必填)】1:Jie Guo, Maozai Tian and Kai Zhu
2 : T. Tony Cai and Harrison H. Zhou
【文题(必填)】1:[size=+1]NEW EFFICIENT AND ROBUST ESTIMATION IN [size=+1]VARYING-COEFFICIENT MODELS [size=+1]WITH HETEROSCEDASTICITY 2:[size=+1]MINIMAX ESTIMATION OF LARGE COVARIANCE [size=+1]MATRICES UNDER -NORM