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Bayesian Tensor Factorized Vector Autoregressive Models for Inferring Granger Causality Patterns from High-Dimensional Multi-subject Panel Neuroimaging Data

Authors: Jingjing Fan, Kevin Sitek, Bharath Chandrasekaran, Abhra Sarkar

arXiv

Understanding the dynamics of functional brain connectivity patterns using noninvasive neuroimaging techniques is an important focus in human neuroscience. Vector autoregressive (VAR) processes and Gr...

mental health psychology open access

Comparing interpretation methods in mental state decoding analyses with deep learning models

Authors: Armin W. Thomas, Christopher RĂ©, Russell A. Poldrack

arXiv

Deep learning (DL) models find increasing application in mental state decoding, where researchers seek to understand the mapping between mental states (e.g., perceiving fear or joy) and brain activity...

mental health psychology open access

Toward a realistic model of speech processing in the brain with self-supervised learning

Authors: Juliette Millet, Charlotte Caucheteux, Pierre Orhan, Yves Boubenec, Alexandre Gramfort, Ewan Dunbar, Christophe Pallier, Jean-Remi King

arXiv

Several deep neural networks have recently been shown to generate activations similar to those of the brain in response to the same input. These algorithms, however, remain largely implausible: they r...

mental health psychology open access

Rotation to Sparse Loadings using $L^p$ Losses and Related Inference Problems

Authors: Xinyi Liu, Gabriel Wallin, Yunxiao Chen, Irini Moustaki

arXiv

Researchers have widely used exploratory factor analysis (EFA) to learn the latent structure underlying multivariate data. Rotation and regularised estimation are two classes of methods in EFA that th...

mental health psychology open access

Autoregressive Model for Multi-Pass SAR Change Detection Based on Image Stacks

Authors: B. G. Palm, D. I. Alves, V. T. Vu, M. I. Pettersson, F. M. Bayer, R. J. Cintra, R. Machado, P. Dammert, H. Hellsten

arXiv

Change detection is an important synthetic aperture radar (SAR) application, usually used to detect changes on the ground scene measurements in different moments in time. Traditionally, change detecti...

mental health psychology open access

Programming molecular systems to emulate a learning spiking neuron

Authors: Jakub Fil, Neil Dalchau, Dominique Chu

arXiv

Hebbian theory seeks to explain how the neurons in the brain adapt to stimuli, to enable learning. An interesting feature of Hebbian learning is that it is an unsupervised method and as such, does not...

mental health psychology open access

The impact of spatio-temporal travel distance on epidemics using an interpretable attention-based sequence-to-sequence model

Authors: Yukang Jiang, Ting Tian, Huajun Xie, Hailiang Guo, Xueqin Wang

arXiv

Amidst the COVID-19 pandemic, travel restrictions have emerged as crucial interventions for mitigating the spread of the virus. In this study, we enhance the predictive capabilities of our model, Sequ...

mental health psychology open access

Forecasting Multilinear Data via Transform-Based Tensor Autoregression

Authors: Jackson Cates, Randy C. Hoover, Kyle Caudle, Cagri Ozdemir, Karen Braman, David Machette

arXiv

In the era of big data, there is an increasing demand for new methods for analyzing and forecasting 2-dimensional data. The current research aims to accomplish these goals through the combination of t...

mental health psychology open access

Surface Analysis with Vision Transformers

Authors: Simon Dahan, Logan Z. J. Williams, Abdulah Fawaz, Daniel Rueckert, Emma C. Robinson

arXiv

The extension of convolutional neural networks (CNNs) to non-Euclidean geometries has led to multiple frameworks for studying manifolds. Many of those methods have shown design limitations resulting i...

mental health psychology open access

Seven recommendations for alternatives to the common analysis of variance (ANOVA) with application in the life sciences -- using R

Authors: Ludwig A. Hothorn

arXiv

Standard ANOVA is among the most widely used tests in the life sciences and beyond. Several alternatives are proposed to provide simultaneous confidence intervals, ensure tight control of FWER, be rob...

mental health psychology open access

Asymptotic dependence modelling of the BRICS stock markets

Authors: Caston Sigauke, Rosinah Mukhodobwane, Wilbert Chagwiza, Winston Garira

arXiv

With the use of empirical data, this paper focuses on solving financial and investment issues involving extremal dependence of ten pairwise combinations of the five BRICS (Brazil, Russia, India, China...

mental health psychology open access

Complex behavior from intrinsic motivation to occupy action-state path space

Authors: Jorge Ramírez-Ruiz, Dmytro Grytskyy, Chiara Mastrogiuseppe, Yamen Habib, Rubén Moreno-Bote

arXiv

Most theories of behavior posit that agents tend to maximize some form of reward or utility. However, animals very often move with curiosity and seem to be motivated in a reward-free manner. Here we a...

mental health psychology open access

Accounting for stellar activity signals in radial-velocity data by using Change Point Detection techniques

Authors: U. Simola, A. Bonfanti, X. Dumusque, J. Cisewski-Kehe, S. Kaski, J. Corander

arXiv

Active regions on the photosphere of a star have been the major obstacle for detecting Earth-like exoplanets using the radial velocity (RV) method. A commonly employed solution for addressing stellar...

mental health psychology open access

Effect of exclusion criteria on the distribution of blood test values

Authors: Rina Kagawa, Masanori Shiro

arXiv

The increasing demand for personalized health care has led to the expectation that individualized quantitative evaluation of human disease states is possible. However, this has not yet been achieved a...

mental health psychology open access

Modeling racial/ethnic differences in COVID-19 incidence with covariates subject to non-random missingness

Authors: Rob Trangucci, Yang Chen, Jon Zelner

arXiv

Characterizing the cumulative burden of COVID-19 by race/ethnicity is of the utmost importance for public health researchers and policy makers in order to design effective mitigation measures. This an...

mental health psychology open access