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math.ST2026
Optimal estimators and tests for reciprocal effects
Qunqiang Feng, Jiashun Jin, Yaru Tian +1
The model plays a fundamental role in modeling directed networks, where the reciprocal effect parameter is of special interest in practice. However, due to nonlinear fact…
math.ST2012
Optimality of Graphlet Screening in High Dimensional Variable Selection
Jiashun Jin, Cun-Hui Zhang, Qi Zhang
Consider a linear regression model where the design matrix X has n rows and p columns. We assume (a) p is much large than n, (b) the coefficient vector beta is sparse in the sense…