Author

Thomas Pigeon

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Preprint Jul 2026

Girsanov Reweighting for Uncertainty Propagation in Rare-Event Kinetics

This work introduces a framework for propagating MLIP uncertainty to the averaged committor probability, a kinetic observable that enables reaction-rate calculations and demonstrates that path-space reweighting provides an efficient route for propagating MLIP uncertainty to rare event kinetics.

Léonard Moracchini, Thomas Pigeon, Morgane Menz et al. · 0 citations

Review Jul 2026

Approximating committor functions: Objective functions and training data sampling

A new loss function based on the application of It\={o}'s formula is proposed to learn the committor function with a minimization procedure on the parameters of a neural network to better approximate the committor function using a better sampling of the reactive trajectories.

Thomas Pigeon, Gabriel Stoltz, T. Lelièvre · 1 citation