A new class of probability distributions, the so-called connected double truncated gamma distribution, is introduced. We show that using this class as the error distribution of a linear model leads to a generalized quantile regression model that combines desirable properties of both least-squares and quantile regression methods: robustness to outliers and differentiable loss function.
机构:
Cent China Normal Univ, Sch Math & Stat, Wuhan 430079, Hubei, Peoples R ChinaCent China Normal Univ, Sch Math & Stat, Wuhan 430079, Hubei, Peoples R China
Qu, Lianqiang
Sun, Liuquan
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Chinese Acad Sci, Inst Appl Math, Acad Math & Syst Sci, Beijing 100190, Peoples R ChinaCent China Normal Univ, Sch Math & Stat, Wuhan 430079, Hubei, Peoples R China
Sun, Liuquan
Sun, Yanqing
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Univ North Carolina Charlotte, Dept Math & Stat, 9201 Univ City Blvd, Charlotte, NC 28223 USACent China Normal Univ, Sch Math & Stat, Wuhan 430079, Hubei, Peoples R China