Algorithms of data generation for deep learning and feedback design: A survey

The article of record as published may be found at https://doi.org/10.1016/j.physd.2021.132955Recent research reveals that deep learning is an effective way of solving high dimensional Hamilton– Jacobi–Bellman equations. The resulting feedback control law in the form of a neural network is computationally efficient for real-time applications of optimal control. A critical part of this design method is to generate data for training the neural network and validating its accuracy. In this paper, we provide a survey of existing algorithms that can be used to generate data. All the algorithms surveyed in this paper are causality-free, i.e., the solution at a point is computed without using the value of the function at any other points. An illustrative example is given for the optimal feedback design using supervised learning in which the data is generated using causality-free algorithms.U.S. Naval Research Laborator