Author

V. L. S. Freitas

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#machine learning Preprint Sep 2026

HCPN-GCN: Scaling Hierarchical Prototype Networks with Cone Geometry for Continual Graph Learning

HCPN-GCN is proposed, a graph-aware extension of HPN that replaces the original linear feature extractors with Graph Convolutional Networks (GCNs) and introduces cone-based prototypes with a diversity regularization objective, which produces richer graph-aware representations while compactly modeling the embedding spac...

S. Silva, V. L. S. Freitas, Gladston J. P. Moreira et al. · 0 citations

Preprint Aug 2026

Structure, Topics, and Diffusion Effects of Bluesky Starter Packs

A large-scale empirical analysis of more than 50,000 English-language starter packs and over 600,000 associated users shows that starter packs form a highly interconnected ecosystem with substantial overlap across packs that largely reflects pre-existing communities.

Andrea Failla, V. L. S. Freitas, Giulio Rossetti et al. · 1 citation