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Boris N. Oreshkin

Unity Technologies

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#machine learning Preprint Nov 2026

Koopman Generative Operators for Efficient Probabilistic Time-Series Forecasting

Probabilistic time-series forecasting requires models that simultaneously capture structured temporal dynamics, expressive uncertainty, and efficient inference, yet existing approaches fall short of this goal: latent dynamical models impose structure but rely on restrictive generation mechanisms, while modern generativ...

Raz Marshanski, Liran Nochumsohn, Mayank Jauhari et al. · 0 citations
Preprint Aug 2026

Bootstrap-Conditioned Action Selection with Tabular Foundation Models

Contextual bandits offer a natural framework for sample-efficient personalization, but practical deployment remains difficult under sparse, biased interaction data, unreliable uncertainty estimates, and severe cold starts. We study whether pre-trained tabular foundation models with in-context learning can be turned int...

Devansh Gupta, S. Tavker, D. Efimov et al. · 0 citations

Post-Training in Time Series Foundation Models: A Unifying Framework

This work analyzes TSFM post-training methods based on their locus of intervention in the prediction pipeline, yielding five categories: parameter adaptation, context augmentation, model composition, output processing and uncertainty control, and compression and specialization.

Shi-Feng Xie, Ambroise Odonnat, Ze-Hao Xiao et al. · 3 citations

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