5 papers
Sharp small-deviation inequalities for sums of independent nonnegative random variables
Weibo Fu, Yanjun Han, Guanyang Wang +3
Let be independent nonnegative random variables with , and write . For , we prove that \[ \mathbb{P}\left(S<\mathbb{E} S+Î…
Gaussian Graphical Models for Functional Connectivity Analysis: A Statistical Review with Applications to Alzheimer's Disease
Panpan Zhang, Shiying Xiao, W. Hudson Robb +3
Functional connectivity analysis is an important tool for characterizing interactions among brain regions, particularly in studies of neurodegenerative disorders such as Alzheimer'…
When Does the Silhouette Score Work? A Comprehensive Study in Network Clustering
Zongyue Teng, Jun Yan, Dandan Liu +1
Selecting the number of communities is a fundamental challenge in network clustering. The silhouette score offers an intuitive, model-free criterion that balances within-cluster co…
Covariate Connectivity Combined Clustering for Weighted Networks
Zeyu Hu, Wenrui Li, Jun Yan +1
Community detection is a central task in network analysis, with applications in social, biological, and technological systems. Traditional algorithms rely primarily on network topo…
CALF-SBM: A Covariate-Assisted Latent Factor Stochastic Block Model
Sydney Louit, Evan Clark, Alexander Gelbard +3
We propose a novel network generative model extended from the standard stochastic block model by concurrently utilizing observed node-level information and accounting for network-e…