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Author

M. van der Schaar

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#machine learning Preprint Sep 2026

Learning Continuous Patient Trajectories from Electronic Health Records

Electronic health records provide irregular observations of latent patient states that evolve continuously over time. Recent autoregressive models condition on clinical histories to forecast future events as sequences of discrete observations. Conversely, multi-marginal flow matching provides a continuous-time formulat...

Silas Ruhrberg Estévez, Kara Liu, Christopher Chiu et al. · 0 citations
#machine learning Preprint Sep 2026

On-Policy or Off-Policy Learning? A Systematic Study of Distillation Dynamics

On-policy learning has been argued to reduce catastrophic forgetting, produce sparser parameter updates, and improve generalisation. However, existing comparisons between supervised fine-tuning and reinforcement learning vary many factors simultaneously, making the contribution of rollout policy difficult to isolate. W...

Julianna Piskorz, Antonin Berthon, M. van der Schaar · 0 citations

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