Extreme events in dynamical systems and random walkers: A review

SN Chowdhury, A Ray, SK Dana, D Ghosh - Physics Reports, 2022 - Elsevier
Extreme events gain the attention of researchers due to their utmost importance in various
contexts ranging from climate to brain. An observable that deviates significantly from its long …

Using machine learning to anticipate tip** points and extrapolate to post-tip** dynamics of non-stationary dynamical systems

D Patel, E Ott - Chaos: An Interdisciplinary Journal of Nonlinear …, 2023 - pubs.aip.org
The ability of machine learning (ML) models to “extrapolate” to situations outside of the
range spanned by their training data is crucial for predicting the long-term behavior of non …

Synchronization to extreme events in moving agents

SN Chowdhury, S Majhi, M Ozer, D Ghosh… - New Journal of …, 2019 - iopscience.iop.org
Interactions amongst agents frequently exist only at particular moments in time, depending
on their closeness in space and movement parameters. Here we propose a minimal model …

Hidden attractors: A new chaotic system without equilibria

S Nag Chowdhury, D Ghosh - The European Physical Journal Special …, 2020 - Springer
Localization of hidden attractors is one of the most challenging tasks in the nonlinear
dynamics due to deficiency of properly justified analytical and numerical procedures. But …

[HTML][HTML] Prediction of dragon king extreme events using machine learning approaches and its characterizations

P Durairaj, GK Sundararam, S Kanagaraj, K Rajagopal - Physics Letters A, 2023 - Elsevier
In this study, we employ a machine learning approach to infer the complex dynamics of
dragon king extreme events. Specifically, we utilize two distinct machine learning …

Extreme events in a network of heterogeneous Josephson junctions

A Ray, A Mishra, D Ghosh, T Kapitaniak, SK Dana… - Physical Review E, 2020 - APS
We report intermittent large spiking events in a heterogeneous network of forced Josephson
junctions under the influence of repulsive interaction. The response of the individual …

Extreme events in globally coupled chaotic maps

SN Chowdhury, A Ray, A Mishra… - Journal of Physics …, 2021 - iopscience.iop.org
Understanding and predicting uncertain things are the central themes of scientific evolution.
Human beings revolve around these fears of uncertainties concerning various aspects like a …

Optimized ensemble deep learning framework for scalable forecasting of dynamics containing extreme events

A Ray, T Chakraborty, D Ghosh - Chaos: An Interdisciplinary Journal of …, 2021 - pubs.aip.org
The remarkable flexibility and adaptability of both deep learning models and ensemble
methods have led to the proliferation for their application in understanding many physical …

Extreme events in a complex network: Interplay between degree distribution and repulsive interaction

A Ray, T Bröhl, A Mishra, S Ghosh, D Ghosh… - … Journal of Nonlinear …, 2022 - pubs.aip.org
The role of topological heterogeneity in the origin of extreme events in a network is
investigated here. The dynamics of the oscillators associated with the nodes are assumed to …

Extreme bursting events via pulse-shaped explosion in mixed Rayleigh-Liénard nonlinear oscillator

B Kaviya, R Suresh… - The European Physical …, 2022 - epjplus.epj.org
We study the dynamics of a parametrically and externally driven Rayleigh-Liénard hybrid
model and report the emergence of extreme bursting events due to a novel pulse-shaped …