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Author

Vaggos Chatziafratis

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#machine learning Preprint Sep 2026

Optimal VC Dimension of Contrastive Learning with Margin

Contrastive learning is a successful paradigm for learning $d$-dimensional geometric representations from a collection of ``anchor--positive--negative''triplets $(i,j^{+},k^{-})$, indicating that ``item $i$ is closer to $j$ than to $k$.''Despite its success, understanding why contrastive learning leads to representatio...

Dionysis Arvanitakis, Vaggos Chatziafratis, Yi-Pei Luo et al. · 0 citations
#artificial intelligence Preprint Mar 2026

Tunable Latent Generative Priors for Compressed Sensing and Inverse Problems

This work develops tunable latent priors for diffusion models, normalizing flows, and variational autoencoders, leveraging nested dropout and shows empirically that tunable priors consistently achieve lower reconstruction errors than fixed-complexity baselines.

Sean Gunn, Jorio Cocola, Oliver De Candido et al. · 1 citation

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