Author

Antonio G. Marques

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Preprint Sep 2026

Signal Processing over Product DAGs: Causal Shifts and Filters

We develop a signal processing framework for signals indexed by the product of two directed acyclic graphs (DAGs) and described by a linear structural equation model (SEM). Such a setup arises whenever (linear) causal relations act along two domains, as in component versus manufacturing stage or gene versus experimenta...

Sundeep Prabhakar Chepuri, Antonio G. Marques, Maulik Devmurari et al. · 0 citations

#machine learning Preprint Oct 2026

Joint Precision Neural Networks: Task-Aware Dependency and Predictive Learning

Exploiting meaningful latent structures from data to solve downstream tasks is a fundamental challenge in signal processing and machine learning. While Principal Component Analysis (PCA) and coVariance Neural Networks (VNNs) successfully leverage the covariance matrix to process data, they inherently capture both direc...

Andrea Cavallo, Samuel Rey, Antonio G. Marques et al. · 0 citations