4 papers
Accelerating Personalized PageRank Vector Computation
Zhen Chen, Xingzhi Guo, Baojian Zhou +2
Personalized PageRank Vectors are widely used as fundamental graph-learning tools for detecting anomalous spammers, learning graph embeddings, and training graph neural networks. T…
On the divisibility of H-shape trees and their spectral determination
Zhen Chen, Jianfeng Wang, Maurizio Brunetti +1
A graph is divisible by a graph if the characteristic polynomial of is divisible by that of . In this paper, a necessary and sufficient condition for recursive graph…
Tighter Bound Estimation for Efficient Biquadratic Optimization Over Unit Spheres
Shigui Li, Linzhang Lu, Xing Qiu +2
Bi-quadratic programming over unit spheres is a fundamental problem in quantum mechanics introduced by pioneer work of Einstein, Schrödinger, and others. It has been shown to be NP…
Nonparametric ROC Summary Statistics for Correlated Diagnostic Marker Data
Liansheng Larry Tang, Aiyi Liu, Zhen Chen +3
We propose efficient nonparametric statistics to compare medical imaging modalities in multi-reader multi-test data and to compare markers in longitudinal ROC data. The proposed me…