Search Results for author: Axel Wismüller

Found 6 papers, 0 papers with code

Large-scale nonlinear Granger causality for inferring directed dependence from short multivariate time-series data

no code implementations9 Apr 2021 Axel Wismüller, Adora M. DSouza, M. Ali Vosoughi & Anas Abidin

Finally, we demonstrate the applicability of lsNGC to estimating causality in large, real-world systems by inferring directional nonlinear, causal relationships among a large number of relatively short time series acquired from functional Magnetic Resonance Imaging (fMRI) data of the human brain.

Causal Discovery Causal Inference +4

Classification of Schizophrenia from Functional MRI Using Large-scale Extended Granger Causality

no code implementations12 Jan 2021 Axel Wismüller, M. Ali Vosoughi

As a reference method, we compare our results with cross-correlation, typically used in the literature as a standard measure of functional connectivity.

Dimensionality Reduction feature selection +3

Tracking Results and Utilization of Artificial Intelligence (tru-AI) in Radiology: Early-Stage COVID-19 Pandemic Observations

no code implementations14 Oct 2020 Axel Wismüller, Larry Stockmaster

Objective: To introduce a method for tracking results and utilization of Artificial Intelligence (tru-AI) in radiology.

Large-scale nonlinear Granger causality: A data-driven, multivariate approach to recovering directed networks from short time-series data

no code implementations10 Sep 2020 Axel Wismüller, Adora M. DSouza, Anas Z. Abidin

Finally, we demonstrate the applicability of lsNGC to estimating causality in large, real-world systems by inferring directional nonlinear, multivariate causal relationships among a large number of relatively short time-series acquired from functional Magnetic Resonance Imaging (fMRI) data of the human brain.

Time Series Time Series Analysis

Automated Identification of Thoracic Pathology from Chest Radiographs with Enhanced Training Pipeline

no code implementations11 Jun 2020 Adora M. DSouza, Anas Z. Abidin, Axel Wismüller

Our results suggest that, in addition to using sophisticated network architectures, a good learning rate, scheduler and a robust optimizer can boost performance.

A Framework for Exploring Non-Linear Functional Connectivity and Causality in the Human Brain: Mutual Connectivity Analysis (MCA) of Resting-State Functional MRI with Convergent Cross-Mapping and Non-Metric Clustering

no code implementations14 Jul 2014 Axel Wismüller, Xixi Wang, Adora M. DSouza, Mahesh B. Nagarajan

We present a computational framework for analysis and visualization of non-linear functional connectivity in the human brain from resting state functional MRI (fMRI) data for purposes of recovering the underlying network community structure and exploring causality between network components.

Clustering Time Series Analysis

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