Data-driven discovery of quasiperiodically driven dynamics

S Das, S Mustavee, S Agarwal - Nonlinear Dynamics, 2024 - Springer
The analysis of a timeseries can provide many new perspectives if it is accompanied by the
assumption that the timeseries is generated from an underlying dynamical system. For …

Learning theory for dynamical systems

T Berry, S Das - SIAM Journal on Applied Dynamical Systems, 2023 - SIAM
The task of modeling and forecasting a dynamical system is one of the oldest problems, and
it remains challenging. Broadly, this task has two subtasks: extracting the full dynamical …

Limits of Learning Dynamical Systems

T Berry, S Das - arXiv preprint arXiv:2409.13493, 2024 - arxiv.org
A dynamical system is a transformation of a phase space, and the transformation law is the
primary means of defining as well as identifying the dynamical system. It is the object of …

Conditional expectation using compactification operators

S Das - Applied and Computational Harmonic Analysis, 2024 - Elsevier
The separate tasks of denoising, least squares expectation, and manifold learning can often
be posed in a common setting of finding the conditional expectations arising from a product …

Reconstructing dynamical systems as zero-noise limits

S Das - arXiv preprint arXiv:2407.16673, 2024 - arxiv.org
A dynamical system may be defined by a simple transition law-such as a map or a vector
field. The objective of most learning techniques is to reconstruct this dynamic transition law …

Conditional expectation via compact kernels

S Das - arXiv preprint arXiv:2306.10592, 2023 - arxiv.org
The separate tasks of denoising, conditional expectation and manifold learning can often be
posed in a common setting of finding the conditional expectations arising from a product of …