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math.ST2017★ 1 cited
Sorted Concave Penalized Regression
Long Feng, Cun-Hui Zhang
The Lasso is biased. Concave penalized least squares estimation (PLSE) takes advantage of signal strength to reduce this bias, leading to sharper error bounds in prediction, coeffi…
math.ST2017★ 10 cited
On Estimation of Isotonic Piecewise Constant Signals
Chao Gao, Fang Han, Cun-Hui Zhang
Consider a sequence of real data points with underlying means . This paper starts from studying the setting that is both piecewise cons…
math.ST2017★ 4 cited
Penalized Estimation in Additive Regression with High-Dimensional Data
Zhiqiang Tan, Cun-Hui Zhang
Additive regression provides an extension of linear regression by modeling the signal of a response as a sum of functions of covariates of relatively low complexity. We study penal…