We propose an evolutionary state space model (E-SSM) for analyzing high dimensional brain signals whose statistical properties evolve over the course of a non-spatial memory …
A El Yaagoubi, H Ombao - Research Papers in Statistical Inference for …, 2023 - Springer
Topological data analysis (TDA) approaches are becoming increasingly popular for studying the dependence patterns in multivariate time series data. In particular, various dependence …
S Aslan, H Ombao - arXiv preprint arXiv:2409.10374, 2024 - arxiv.org
One fundamental challenge of data-driven analysis in neuroscience is modeling causal interactions and exploring the connectivity between nodes in a brain network. Various …
S Jiao, T Shen, Z Yu, H Ombao - arXiv preprint arXiv:2101.04334, 2021 - arxiv.org
We propose a two-stage approach Spec PC-CP to identify change points in multivariate time series. In the first stage, we obtain a low-dimensional summary of the high-dimensional time …
S Aslan, H Ombao - arXiv preprint arXiv:2406.02360, 2024 - arxiv.org
This manuscript presents a novel method for discovering effective connectivity between specified pairs of nodes in a high-dimensional network of time series. To accurately perform …
Topological data analysis (TDA) approaches are becoming increasingly popular for studying the dependence patterns in multivariate time series data. In particular, various dependence …
Change point detection is a critical analysis in various scientific fields such as finance, medicine, and climatology. Despite the recent developments in methods and algorithms, it …
Functional magnetic resonance imaging studies have long demonstrated a high degree of correlated activity between the left and right hemispheres of the brain. Interregional …
Medir es comparar con un patrón, o clasificar en una escala, la magnitud de una observación. Permite calibrar la importancia de un fenómeno y transmitirlo con exactitud …