Predicting multiple observations in complex systems through low-dimensional embeddings

Authors: Tao Wu, Xiangyun Gao, Feng An, Xiaotian Sun, Haizhong An, Zhen Su, Shraddha Gupta, Jianxi Gao, Jürgen Kurths

Published: 2024-03-13

DOI: 10.1038/s41467-024-46598-w

Source: Full article


Abstract

AbstractForecasting all components in complex systems is an open and challenging task, possibly due to high dimensionality and undesirable predictors. We bridge this gap by proposing a data-driven and model-free framework, namely, feature-and-reconstructed manifold mapping (FRMM), which is a combination of feature embedding and delay embedding. For a high-dimensional dynamical system, FRMM finds its topologically equivalent manifolds with low dimensions from feature embedding and delay embedding and then sets the low-dimensional feature manifold as a generalized predictor to achieve predictions of all components. The substantial potential of FRMM is shown for both representative models and real-world data involving Indian monsoon, electroencephalogram (EEG) signals, foreign exchange market, and traffic speed in Los Angeles Country. FRMM overcomes the curse of dimensionality and finds a generalized predictor, and thus has potential for applications in many other real-world systems.