3 papers
nlin.CD2026
Data-Driven Characterisation of Wave-Forced Turbulence Using Time-Resolved Forecast-Error Growth
Raj Jyoti Baishya, Joychen Kenglang, Andrei Velichko +1
Periodic surface-wave forcing can reorganise turbulent flows through coherent spectral response, synchronization, intermittency, and changes in short-term predictability, so its dy…
nlin.CD2026
Equation-Free Period-Aware Forecast-Error Contraction for Estimating Negative Largest Lyapunov Exponents from Short Trajectory Ensembles
Andrei Velichko, N'Gbo N'Gbo, Viet-Thanh Pham
Estimating positive largest Lyapunov exponents from data is comparatively natural because neighboring trajectories separate, whereas stable dynamics require resolving contraction b…
cs.SD2025
Speech Command Recognition Using LogNNet Reservoir Computing for Embedded Systems
Yuriy Izotov, Andrei Velichko
This paper presents a low-resource speech-command recognizer combining energy-based voice activity detection (VAD), an optimized Mel-Frequency Cepstral Coefficients (MFCC) pipeline…