Dynamical system analysis of a data-driven model constructed by reservoir computing
2021
This study evaluates data-driven models from a dynamical system perspective, such as unstable fixed points, periodic orbits, Lyapunov exponents, manifold structures, and statistical values. These dynamical characteristics can be reconstructed much more precisely by a data-driven model using reservoir computing than by computing directly from training data. With this idea, we estimate the state-lasting time distribution of a particular macroscopic variable of chaotic fluid flow, which cannot be calculated from a direct numerical simulation of the Navier--Stokes equation because of its high computational cost.
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