3 papers
stat.ME2024
Optimal Network Pairwise Comparison
Jiashun Jin, Zheng Tracy Ke, Shengming Luo +1
We are interested in the problem of two-sample network hypothesis testing: given two networks with the same set of nodes, we wish to test whether the underlying Bernoulli probabili…
stat.ME2020
On Posterior Consistency of Bayesian Factor Models in High Dimensions
Yucong Ma, Jun S. Liu
As a principled dimension reduction technique, factor models have been widely adopted in social science, economics, bioinformatics, and many other fields. However, in high-dimensio…
stat.ME2020
Estimation of the number of spiked eigenvalues in a covariance matrix by bulk eigenvalue matching analysis
Zheng Tracy Ke, Yucong Ma, Xihong Lin
The spiked covariance model has gained increasing popularity in high-dimensional data analysis. A fundamental problem is determination of the number of spiked eigenvalues, . For…