We introduce a data-based approach to estimating key quantities which arise
in the study of nonlinear control systems and random nonlinear dynamical
systems. Our approach hinges on the observation that much of the existing
linear theory may be readily extended to nonlinear systems - with a reasonable
expectation of success - once the nonlinear system has been mapped into a high
or infinite dimensional feature space.
We introduce a data-driven order reduction method for nonlinear control
systems, drawing on recent progress in machine learning and statistical
dimensionality reduction. The method rests on the assumption that the nonlinear
system behaves linearly when lifted into a high (or infinite) dimensional
feature space where balanced truncation may be carried out implicitly.
We introduce a novel data-driven order reduction method for nonlinear control
systems, drawing on recent progress in machine learning and statistical
dimensionality reduction. The method rests on the assumption that the nonlinear
system behaves linearly when lifted into a high (or infinite) dimensional
feature space where balanced truncation may be carried out implicitly.