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math.ST2023
Step and Smooth Decompositions as Topological Clustering
Luciano Vinas, Arash A. Amini
We investigate a class of recovery problems for which observations are a noisy combination of continuous and step functions. These problems can be seen as non-injective instances o…
cs.LG2023
Simple GNNs with Low Rank Non-parametric Aggregators
Luciano Vinas, Arash A. Amini
We revisit recent spectral GNN approaches to semi-supervised node classification (SSNC). We posit that state-of-the-art (SOTA) GNN architectures may be over-engineered for common S…