Reconstruction of normal forms by learning informed observation geometries from data

Publication Year
2017

Type

Journal Article
Abstract
The discovery of phys. laws consistent with empirical observations is at the heart of (applied) science and engineering. These laws typically take the form of nonlinear differential equations depending on parameters; dynamical systems theory provides, through the appropriate normal forms, an "intrinsic" prototypical characterization of the types of dynamical regimes accessible to a given model. Using an implementation of data-informed geometry learning, we directly reconstruct the relevant "normal forms": a quant. mapping from empirical observations to prototypical realizations of the underlying dynamics. Interestingly, the state variables and the parameters of these realizations are inferred from the empirical observations; without prior knowledge or understanding, they parametrize the dynamics intrinsically without explicit reference to fundamental phys. quantities.
Journal
Proc. Natl. Acad. Sci. U. S. A.
Volume
114
Pages
E7865
ISBN
1091-64900027-8424

CAplus AN 2017:1365456; MEDLINE PMID: 28831006 (Journal; Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.)