DOI: 10.1063/5.0331096 ISSN: 1054-1500

An autoencoder conjugacy network to learn one-dimensional chaotic maps

Meagan Carney, Cecilia González-Tokman, Ruethaichanok Kardkasem, Hongkun Zhang

We introduce a data-driven method for learning one-dimensional chaotic maps using an improved autoencoder architecture that incorporates a conjugacy layer in the latent space. The network learns an unknown conjugacy mapping the original chaotic map into latent space, where a known transformation to the tent map is applied to constrain the representation. This approach enforces dynamical principles while improving the accuracy of predicted orbits for one-dimensional chaotic maps that share the topological entropy of, and the single unimodal shape of, the standard logistic map. We demonstrate its effectiveness within this scope on continuous and one-dimensional piecewise chaotic maps, showing improved performance over traditional and recent deep learning architectures, and identify possible failure modes when the target map lies outside this conjugacy class.

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