75 citations · 252 across the 29 of their papers we have counts for
9 papers · 1 filter
An Annotated Graph Model with Differential Degree Heterogeneity for Directed Networks
Stefan Stein, Chenlei Leng
Directed networks are conveniently represented as graphs in which ordered edges encode interactions between vertices. Despite their wide availability, there is a shortage of statis…
A Sparse Beta Regression Model for Network Analysis
Stefan Stein, Rui Feng, Chenlei Leng
For statistical analysis of network data, the -model has emerged as a useful tool, thanks to its flexibility in incorporating nodewise heterogeneity and theoretical tractability…
Spectral Analysis of High-dimensional Time Series
Mark Fiecas, Chenlei Leng, Weidong Liu +1
A useful approach for analysing multiple time series is via characterising their spectral density matrix as the frequency domain analog of the covariance matrix. When the dimension…
An analysis of penalized interaction models
Junlong Zhao, Chenlei Leng
An important consideration for variable selection in interaction models is to design an appropriate penalty that respects hierarchy of the importance of the variables. A common the…
On the consistency theory of high dimensional variable screening
Xiangyu Wang, Chenlei Leng, David B. Dunson
Variable screening is a fast dimension reduction technique for assisting high dimensional feature selection. As a preselection method, it selects a moderate size subset of candidat…
Asymptotics in directed exponential random graph models with an increasing bi-degree sequence
Ting Yan, Chenlei Leng, Ji Zhu
Although asymptotic analyses of undirected network models based on degree sequences have started to appear in recent literature, it remains an open problem to study statistical pro…