Author

Sayantan Choudhury

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#machine learning Preprint Sep 2026

Polyak-Type Extragradient Methods for Monotone Root-Finding Problems

We study Polyak-type step-size selection for extragradient methods for solving deterministic and stochastic monotone root-finding problems. We show that the known projection-type correction for deterministic extragradient arises from minimizing an upper bound on the distance to a solution, paralleling the classical Pol...

Taeho Yoon, Sayantan Choudhury, Ezra Greenberg et al. · 0 citations

#machine learning Preprint Sep 2026

Multi-source conformal prediction: leveraging heterogeneity via localization

Multi-Source Randomly Localized Conformal Prediction is proposed, which builds on the local coverage properties of randomly localized conformal prediction and extends it to multiple sources through data-adaptive source selection and establishes finite-sample coverage bounds using an interpretable notion of envelope dis...

Rohan Hore, Anirban Chatterjee, Sayantan Choudhury · 0 citations