Learning Partially Known Stochastic Dynamics with Empirical PAC Bayes
Haussmann, Manuel, Gerwinn, Sebastian, Look, Andreas, Rakitsch, Barbara, Kandemir, Melih
In the following, we assume to have access to a differential equation system Neural Stochastic Differential Equations that describes the dynamics of the target environment model a dynamical environment with neural with low fidelity, e.g. by describing the vector field on nets assigned to their drift and diffusion a reduced dimensionality, by ignoring detailed models terms. The high expressive power of their of some system components, or by avoiding certain nonlinearity comes at the expense of instability dependencies for computational feasibility. We incorporate in the identification of the large set of free the ODE system provided by the domain expert parameters. This paper presents a recipe to into a nonlinear system identification engine, which we improve the prediction accuracy of such models choose to be a Bayesian Neural Stochastic Differential in three steps: i) accounting for epistemic Equation (BNSDE) to cover a large scope of dynamical uncertainty by assuming probabilistic weights, systems, resulting in a hybrid model.
Oct-26-2020