Towards Optimal Network Depths: Control-Inspired Acceleration of Training and Inference in Neural ODEs

Published: 31 Oct 2023, Last Modified: 09 Nov 2023DLDE III PosterEveryoneRevisionsBibTeX
Keywords: Neural ODEs, optimal control, network depth, temporal optimization, minimum-time control, Lyapunov, convergence speed
TL;DR: This paper introduces novel approaches inspired by control theory to optimize both network depth and accelerate training and inference in Neural Ordinary Differential Equations (ODEs) while maintaining performance.
Abstract: Neural Ordinary Differential Equations (ODEs) offer potential for learning continuous dynamics, but their slow training and inference limit broader use. This paper proposes spatial and temporal optimization inspired by control theory. It seeks an optimal network depth to accelerate both training and inference while maintaining performance. Two approaches are presented: one treats training as a single-stage minimum-time optimal control problem, adjusting terminal time, and the other combines pre-training with Lyapunov method, followed by safe terminal time updates in a secondary stage. Experiments confirm the effectiveness of addressing Neural ODEs' speed limitations.
Submission Number: 18