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06/08/2023
Subject clustering by IF-PCA and several recent methods
Subject clustering (i.e., the use of measured features to cluster subjec...
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03/09/2023
Phase transition for detecting a small community in a large network
How to detect a small community in a large network is an interesting pro...
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04/24/2022
Co-citation and Co-authorship Networks of Statisticians
We collected and cleaned a large data set on publications in statistics....
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04/23/2022
The SCORE normalization, especially for highly heterogeneous network and text data
SCORE was introduced as a spectral approach to network community detecti...
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10/08/2021
Allocation of COVID-19 Testing Budget on a Commute Network of Counties
The screening testing is an effective tool to control the early spread o...
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09/19/2020
Estimating the number of communities by Stepwise Goodness-of-fit
Given a symmetric network with n nodes, how to estimate the number of co...
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04/21/2019
Optimal Adaptivity of Signed-Polygon Statistics for Network Testing
Given a symmetric social network, we are interested in testing whether i...
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11/14/2018
SCORE+ for Network Community Detection
SCORE is a recent approach to network community detection proposed by Ji...
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07/23/2018
Network Global Testing by Counting Graphlets
Consider a large social network with possibly severe degree heterogeneit...
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02/24/2015
Phase Transitions for High Dimensional Clustering and Related Problems
Consider a two-class clustering problem where we observe X_i = ℓ_i μ + Z...
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12/21/2012
Optimal classification in sparse Gaussian graphic model
Consider a two-class classification problem where the number of features...
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04/29/2012
