Ritwik Gupta

Learning the Shared Latent Structure of Cryo-EM Inverse Problems

Nithin Chalapathi, Theo Sternlieb, Ethan Han, Sonya M Hanson, Pilar Cossio, Aditi S Krishnapriyan, Ritwik Gupta

EMber is a self-supervised foundation model for cryo-EM that learns transferable representations of molecular structure, achieving state-of-the-art performance on conformational analysis, population estimation, and 3D reconstruction.

Tinted Frames: Question Framing Blinds Vision-Language Models

Wan-Cyuan Fan, Jiayun Luo, Declan Kutscher, Leonid Sigal, Ritwik Gupta

VLMs are selectively blind. They decide how much to look at an image based on question framing (open-ended vs Yes/No vs MCQ), even when the same visual reasoning is required. We analyze this phenomenon and mitigate it in this paper.

TCBench: A Benchmark for Tropical Cyclone Track and Intensity Forecasting at the Global Scale

Milton Gomez, Marie McGraw, Saranya Ganesh S., Frederick Iat-Hin Tam, Ilia Azizi, Samuel Darmon, Monika Feldmann, Stella Bourdin, Louis Poulain-Auzéau, Suzana J. Camargo, Jonathan Lin, Dan Chavas, Chia-Ying Lee, Ritwik Gupta, Andrea Jenney, Tom Beucler

TCBench is a benchmark for evaluating global, short to medium-range (1-5 days) forecasts of tropical cyclone track and intensity. It builds on the IBTrACS observational dataset and includes state-of-the-art dynamical and neural weather models. Designed for accessibility, TCBench helps AI practitioners tackle domain-relevant TC challenges.