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• W3204920989 abstract "We present a method to probe rare molecular dynamics trajectories directly using reinforcement learning. We consider trajectories that are conditioned to transition between regions of configuration space in finite time, such as those relevant in the study of reactive events, and trajectories exhibiting rare fluctuations of time-integrated quantities in the long time limit, such as those relevant in the calculation of large deviation functions. In both cases, reinforcement learning techniques are used to optimize an added force that minimizes the Kullback–Leibler divergence between the conditioned trajectory ensemble and a driven one. Under the optimized added force, the system evolves the rare fluctuation as a typical one, affording a variational estimate of its likelihood in the original trajectory ensemble. Low variance gradients employing value functions are proposed to increase the convergence of the optimal force. The method we develop employing these gradients leads to efficient and accurate estimates of both the optimal force and the likelihood of the rare event for a variety of model systems." @default.
• W3204920989 created "2021-10-11" @default.
• W3204920989 creator A5030672410 @default.
• W3204920989 creator A5034908857 @default.
• W3204920989 creator A5081870439 @default.
• W3204920989 creator A5090295675 @default.
• W3204920989 date "2021-10-01" @default.
• W3204920989 modified "2023-10-17" @default.
• W3204920989 title "Reinforcement learning of rare diffusive dynamics" @default.
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