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Author

Nithin Somasekharan

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Preprint Sep 2026

Deep Koopman Sensing

Deep Koopman Sensing is proposed, a data-driven reduced-order DA framework that combines a nonlinear autoencoder with parameter-conditioned linear latent dynamics approximating the Koopman operator, and shows that latent dynamics should be designed for the downstream estimation task rather than selected solely for fore...

Nithin Somasekharan, Yadi Cao, Shao-Wu Pan · 0 citations
#machine learning Preprint Sep 2026

How Does Distribution Shift Shape Pretraining Gains in Neural PDE Surrogates?

Pretraining a neural PDE surrogate can reduce the amount of new CFD data needed when geometry or modeled physics changes. However, it remains unclear how different components of distribution shift affect this benefit. We pretrain a surrogate on 254,909 RANS solutions from one airfoil family and fine-tune it on a new fa...

P. Bhargav, Nithin Somasekharan, R. Kanchi et al. · 0 citations
Preprint Aug 2026

Position: AI Agents in Scientific Teams Should Be Studied as Human-Agent Systems

This work argues that studying AI Scientists as human-agent systems (HAS) is both underexplored and undervalued, and calls for new research that adopts the HAS lens to develop mathematical frameworks for understanding and fostering human-AI synergy in scientific discovery.

P. Emami, Sameera Horawalavithana, T. Nguyễn et al. · 0 citations

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