Author

Om Roy

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#machine learning Preprint Sep 2026

High-Resolution Dynamic Functional Connectivity Generation with Graph-Variate Flow Matching

High-resolution dynamic functional connectivity (DFC) can reveal rapidly evolving brain-network interactions, but short temporal windows yield noisy, often low-rank covariance estimates. Graph-Variate Dynamic (GVD) connectivity addresses this by modulating fast instantaneous interactions with stable trial-level support...

Om Roy, Yashar Moshfeghi, K. M. Smith · 0 citations

#graph neural networks Open access Sep 2026

Activated permutation entropy for graph signals

Nonlinear dynamics play an important role in the analysis of signals. A popular, readily interpretable nonlinear measure is Permutation Entropy (PE). PE has recently been extended for the analysis of graph signals, thus providing a framework for non-linear analysis of data sampled on irregular domains. Integrating idea...

Om Roy, Avalon Campbell-Cousins, J. S. Fabila-Carrasco et al. · Nonlinear dynamics · 0 citations