Borjan Geshkovski

activity

20242026

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4 papers · 1 filter

math.OC2026

Constructive conditional normalizing flows

Borjan Geshkovski, DomÃ¨nec Ruiz-Balet

Motivated by applications in conditional sampling, given a probability measure $I^¼$ and a diffeomorphism $I ¨ $ , we consider the problem of simultaneously approximating $I ¨ $ and the…

math.OC2026

Measure-to-measure interpolation using Transformers

Borjan Geshkovski, Philippe Rigollet, DomÃ¨nec Ruiz-Balet

Transformers are deep neural network architectures that underpin the recent successes of large language models. Unlike more classical architectures that can be viewed as point-to-p…

math.OC2025

Constructive approximate transport maps with normalizing flows

Antonio Ãlvarez-LÃ³pez, Borjan Geshkovski, DomÃ¨nec Ruiz-Balet

We study an approximate controllability problem for the continuity equation and its application to constructing transport maps with normalizing flows. Specifically, we construct ti…

math.OC2025

Attention's forward pass and Frank-Wolfe

Albert Alcalde, Borjan Geshkovski, DomÃ¨nec Ruiz-Balet

We study the hardmax limit of self-attention dynamics for token embeddings obtained in the zero-temperature ( $I^^{2} \to + \infty$ ) regime, and relate it to the finite- $I^^{2}$ setting. In th…