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相关论文: Large-Scale Extended Granger Causality for Classif…

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Understanding the relationship between cognition and intrinsic brain activity through purely data-driven approaches remains a significant challenge in neuroscience. Resting-state functional magnetic resonance imaging (rs-fMRI) offers a…

机器学习 · 计算机科学 2024-11-01 Yutong Gao , Vince D. Calhoun , Robyn L. Miller

This paper explores the potential of the transformer models for learning Granger causality in networks with complex nonlinear dynamics at every node, as in neurobiological and biophysical networks. Our study primarily focuses on a…

机器学习 · 计算机科学 2025-10-21 Ziyu Lu , Anika Tabassum , Shruti Kulkarni , Lu Mi , J. Nathan Kutz , Eric Shea-Brown , Seung-Hwan Lim

The abundance of online user data has led to a surge of interests in understanding the dynamics of social relationships using computational methods. Utilizing users' items adoption data, we develop a new method to compute the Granger-causal…

社会与信息网络 · 计算机科学 2015-01-07 Freddy Chong Tat Chua , Richard J. Oentaryo , Ee-Peng Lim

Using multimodal neuroimaging data to characterize brain network is currently an advanced technique for Alzheimer's disease(AD) Analysis. Over recent years the neuroimaging community has made tremendous progress in the study of…

计算机视觉与模式识别 · 计算机科学 2021-07-22 Junren Pan , Baiying Lei , Yanyan Shen , Yong Liu , Zhiguang Feng , Shuqiang Wang

Alzheimer's disease (AD) is characterized by a sequence of pathological changes, which are commonly assessed in vivo using MRI and PET. Currently, the most approaches to analyze statistical associations between brain regions rely on Pearson…

神经元与认知 · 定量生物学 2020-03-30 Martin Dyrba , Reza Mohammadi , Michel J. Grothe , Thomas Kirste , Stefan J. Teipel

Substance use is a global issue that negatively impacts millions of persons who use drugs (PWUDs). In practice, identifying vulnerable PWUDs for efficient allocation of appropriate resources is challenging due to their complex use patterns…

Big data initiatives such as the Enhancing NeuroImaging Genetics through Meta-Analysis consortium (ENIGMA), combine data collected by independent studies worldwide to achieve more accurate estimates of effect sizes and more reliable and…

Traditional Information Retrieval (IR) metrics, such as nDCG, MAP, and MRR, assume that human users sequentially examine documents with diminishing attention to lower ranks. This assumption breaks down in Retrieval Augmented Generation…

计算与语言 · 计算机科学 2025-10-27 Giovanni Trappolini , Florin Cuconasu , Simone Filice , Yoelle Maarek , Fabrizio Silvestri

Predicting cognition from neuroimaging data in healthy individuals offers insights into the neural mechanisms underlying cognitive abilities, with potential applications in precision medicine and early detection of neurological and…

机器学习 · 计算机科学 2025-07-29 Jagruti Patel , Mikkel Schöttner , Thomas A. W. Bolton , Patric Hagmann

Accurate early diagnosis and monitoring of neurodegenerative conditions is essential for effective disease management and delivery of medication and treatment. This research develops automatic methods for detecting brain imaging preclinical…

神经与进化计算 · 计算机科学 2019-10-15 Amir Dehsarvi , Stephen L. Smith

Background and Objective: It is commonly accepted that accurate monitoring of neurodegenerative diseases is crucial for effective disease management and delivery of medication and treatment. This research develops automatic clinical…

神经与进化计算 · 计算机科学 2022-05-31 Amir Dehsarvi , Jennifer Kay South Palomares , Stephen Leslie Smith

There is a recent trend to leverage the power of graph neural networks (GNNs) for brain-network based psychiatric diagnosis, which,in turn, also motivates an urgent need for psychiatrists to fully understand the decision behavior of the…

机器学习 · 统计学 2024-01-30 Kaizhong Zheng , Shujian Yu , Badong Chen

Mental disorders present challenges in diagnosis and treatment due to their complex and heterogeneous nature. Electroencephalogram (EEG) has shown promise as a potential biomarker for these disorders. However, existing methods for analyzing…

统计方法学 · 统计学 2024-01-30 Xingche Guo , Bin Yang , Ji Meng Loh , Qinxia Wang , Yuanjia Wang

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…

神经与进化计算 · 计算机科学 2014-07-16 Axel Wismüller , Xixi Wang , Adora M. DSouza , Mahesh B. Nagarajan

Functional Magnetic Resonance Imaging (fMRI) is an imaging technique widely used to study human brain activity. fMRI signals in areas across the brain transiently synchronise and desynchronise their activity in a highly structured manner,…

机器学习 · 计算机科学 2025-08-12 Yiran Huang , Amirhossein Nouranizadeh , Christine Ahrends , Mengjia Xu

Building comprehensive brain connectomes has proved of fundamental importance in resting-state fMRI (rs-fMRI) analysis. Based on the foundation of brain network, spatial-temporal-based graph convolutional networks have dramatically improved…

机器学习 · 计算机科学 2023-12-19 Rui Yang , Wenrui Dai , Huajun She , Yiping P. Du , Dapeng Wu , Hongkai Xiong

Granger causality, a popular method for determining causal influence between stochastic processes, is most commonly estimated via linear autoregressive modeling. However, this approach has a serious drawback: if the process being modeled…

统计理论 · 数学 2016-06-29 Lionel Barnett , Anil K. Seth

Major depressive disorder (MDD) requires study of brain functional connectivity alterations for patients, which can be uncovered by resting-state functional magnetic resonance imaging (rs-fMRI) data. We consider the problem of identifying…

机器学习 · 统计学 2022-06-10 Shuai Liu , Yixuan Qiu , Baojuan Li , Huaning Wang , Xiangyu Chang

Inferring causal relationships in observational time series data is an important task when interventions cannot be performed. Granger causality is a popular framework to infer potential causal mechanisms between different time series. The…

机器学习 · 计算机科学 2022-07-22 Zexuan Yin , Paolo Barucca

Neural processes in the brain operate at a range of temporal scales. Granger causality, the most widely-used neuroscientific tool for inference of directed functional connectivity from neurophsyiological data, is traditionally deployed in…

应用统计 · 统计学 2019-07-17 Lionel Barnett , Anil K. Seth