Dec 10, 2023
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Neural ordinary differential equations (NODEs) have been proven useful for learning non-linear dynamics of arbitrary trajectories. However, current NODE methods capture variations across trajectories only via the initial state value or by auto-regressive encoder updates.In this work, we introduce Modulated Neural ODEs (MoNODEs), a novel framework that sets apart dynamics states from underlying static factors of variation and improves the existing NODE methods. In particular, we introduce *time-invariant modulator variables* that are learned from the data.We incorporate our proposed framework into four existing NODE variants.We test MoNODE on oscillating systems, videos and human walking trajectories, where each trajectory has trajectory-specific modulation.Our framework consistently improves the existing model ability to generalize to new dynamic parameterizations and to perform far-horizon forecasting.In addition, we verify that the proposed modulator variables are informative of the true unknown factors of variation as measured by R^2 scores.Neural ordinary differential equations (NODEs) have been proven useful for learning non-linear dynamics of arbitrary trajectories. However, current NODE methods capture variations across trajectories only via the initial state value or by auto-regressive encoder updates.In this work, we introduce Modulated Neural ODEs (MoNODEs), a novel framework that sets apart dynamics states from underlying static factors of variation and improves the existing NODE methods. In particular, we introduce *time-i…
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