421 citations · 3.9k across the 201 of their papers we have counts for
28 papers · 1 filter
Multi-centrality Graph Spectral Decompositions and their Application to Cyber Intrusion Detection
Pin-Yu Chen, Sutanay Choudhury, Alfred O. Hero
Many modern datasets can be represented as graphs and hence spectral decompositions such as graph principal component analysis (PCA) can be useful. Distinct from previous graph dec…
Incremental Method for Spectral Clustering of Increasing Orders
Pin-Yu Chen, Baichuan Zhang, Mohammad Al Hasan +1
The smallest eigenvalues and the associated eigenvectors (i.e., eigenpairs) of a graph Laplacian matrix have been widely used for spectral clustering and community detection. Howev…
Multimodal MRI Neuroimaging with Motion Compensation Based on Particle Filtering
Yu-Hui Chen, Roni Mittelman, Boklye Kim +2
Head movement during scanning impedes activation detection in fMRI studies. Head motion in fMRI acquired using slice-based Echo Planar Imaging (EPI) can be estimated and compensate…
Measure-Transformed Quasi Maximum Likelihood Estimation
Koby Todros, Alfred O. Hero
In this paper the Gaussian quasi maximum likelihood estimator (GQMLE) is generalized by applying a transform to the probability distribution of the data. The proposed estimator, ca…
The intrinsic value of HFO features as a biomarker of epileptic activity
Stephen V. Gliske, Kevin R. Moon, William C. Stacey +1
High frequency oscillations (HFOs) are a promising biomarker of epileptic brain tissue and activity. HFOs additionally serve as a prototypical example of challenges in the analysis…
Bounds on Variance for Unimodal Distributions
Hye Won Chung, Brian M. Sadler, Alfred O. Hero
We show a direct relationship between the variance and the differential entropy for subclasses of symmetric and asymmetric unimodal distributions by providing an upper bound on var…