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Clustering functional data using wavelets

Authors: Anestis Antoniadis, Xavier Brossat, Jairo Cugliari, Jean-Michel Poggi

arXiv

We present two methods for detecting patterns and clusters in high dimensional time-dependent functional data. Our methods are based on wavelet-based similarity measures, since wavelets are well suite...

mental health psychology open access

Learning fixed points of recurrent neural networks by reparameterizing the network model

Authors: Vicky Zhu, Robert Rosenbaum

arXiv

In computational neuroscience, fixed points of recurrent neural networks are commonly used to model neural responses to static or slowly changing stimuli. These applications raise the question of how...

mental health psychology open access

Perturbing a Neural Network to Infer Effective Connectivity: Evidence from Synthetic EEG Data

Authors: Peizhen Yang, Xinke Shen, Zongsheng Li, Zixiang Luo, Kexin Lou, Quanying Liu

arXiv

Identifying causal relationships among distinct brain areas, known as effective connectivity, holds key insights into the brain's information processing and cognitive functions. Electroencephalogram (...

mental health psychology open access

Diffusion Models for Probabilistic Deconvolution of Galaxy Images

Authors: Zhiwei Xue, Yuhang Li, Yash Patel, Jeffrey Regier

arXiv

Telescopes capture images with a particular point spread function (PSF). Inferring what an image would have looked like with a much sharper PSF, a problem known as PSF deconvolution, is ill-posed beca...

mental health psychology open access

A Markov Chain Model for Identifying Changes in Daily Activity Patterns of People Living with Dementia

Authors: Nan Fletcher-Lloyd, Alina-Irina Serban, Magdalena Kolanko, David Wingfield, Danielle Wilson, Ramin Nilforooshan, Payam Barnaghi, Eyal Soreq

arXiv

Malnutrition and dehydration are strongly associated with increased cognitive and functional decline in people living with dementia (PLWD), as well as an increased rate of hospitalisations in comparis...

mental health psychology open access

FaIRGP: A Bayesian Energy Balance Model for Surface Temperatures Emulation

Authors: Shahine Bouabid, Dino Sejdinovic, Duncan Watson-Parris

arXiv

Emulators, or reduced complexity climate models, are surrogate Earth system models that produce projections of key climate quantities with minimal computational resources. Using time-series modelling...

mental health psychology open access

Naturalistic yielding behavior of drivers at an unsignalized intersection based on survival analysis

Authors: Delgermaa Gankhuyag, Cristina Olaverri-Monreal

arXiv

In recent years, autonomous vehicles have become increasingly popular, leading to extensive research on their safe and efficient operation. Understanding road yielding behavior is crucial for incorpor...

mental health psychology open access

Sparse electrophysiological source imaging predicts aging-related gait speed slowing

Authors: Vega-Hernandez, Mayrim, Galan-Garcia, Lidice, Perez-Hidalgo-Gato, Jhoanna, Ontivero-Ortega, Marlis, Garcia-Agustin, Daysi, Garcia-Reyes, Ronaldo, Bosch-Bayard, Jorge, Marinazzo, Daniele, Martinez-Montes, Eduardo, Valdes-Sosa, Pedro A

arXiv

Objective: We seek stable Electrophysiological Source Imaging (ESI) biomarkers associated with Gait Speed (GS) as a measure of functional decline. Towards this end we determine the predictive value of...

mental health psychology open access

Unlocking ensemble ecosystem modelling for large and complex networks

Authors: Sarah A. Vollert, Christopher Drovandi, Matthew P. Adams

arXiv

The potential effects of conservation actions on threatened species can be predicted using ensemble ecosystem models by forecasting populations with and without intervention. These model ensembles com...

mental health psychology open access

The impacts of remote work on travel: insights from nearly three years of monthly surveys

Authors: Nicholas S. Caros, Xiaotong Guo, Yunhan Zheng, Jinhua Zhao

arXiv

Remote work has expanded dramatically since 2020, upending longstanding travel patterns and behavior. More fundamentally, the flexibility for remote workers to choose when and where to work has create...

mental health psychology open access

Checking the Statistical Assumptions Underlying the Application of the Standard Deviation and RMS Error to Eye-Movement Time Series: A Comparison between Human and Artificial Eyes

Authors: Lee Friedman, Timothy Hanson, Hal S. Stern, Oleg V. Komogortsev

arXiv

Spatial precision is often measured using the standard deviation (SD) of the eye position signal or the RMS of the sample-to-sample differences (StoS) signal during fixation. As both measures emerge f...

mental health psychology open access

Examining the interactions between working from home, travel behavior and change in car ownership due to the impact of COVID-19

Authors: Yunhan Zheng, Nicholas Caros, Jim Aloisi, Jinhua Zhao

arXiv

COVID-19 has disrupted society and changed how people learn, work and live. The availability of vaccines in the spring of 2021, however, led to a gradual return of many pre-pandemic activities in Mass...

mental health psychology open access

EEG Synthetic Data Generation Using Probabilistic Diffusion Models

Authors: Giulio Tosato, Cesare M. Dalbagno, Francesco Fumagalli

arXiv

Electroencephalography (EEG) plays a significant role in the Brain Computer Interface (BCI) domain, due to its non-invasive nature, low cost, and ease of use, making it a highly desirable option for w...

mental health psychology open access

Design and analysis of a microplate assay in the presence of multiple restrictions on the randomization

Authors: Alexandre Bohyn, Eric D. Schoen, Chee Ping Ng, Kristina Bishard, Manon Haarmans, Sebastian J. Trietsch, Peter Goos

arXiv

Experiments using multi-step protocols often involve several restrictions on the randomization. For a specific application to in vitro testing on microplates, a design was required with both a split-p...

mental health psychology open access

BrainBERT: Self-supervised representation learning for intracranial recordings

Authors: Christopher Wang, Vighnesh Subramaniam, Adam Uri Yaari, Gabriel Kreiman, Boris Katz, Ignacio Cases, Andrei Barbu

arXiv

We create a reusable Transformer, BrainBERT, for intracranial recordings bringing modern representation learning approaches to neuroscience. Much like in NLP and speech recognition, this Transformer e...

mental health psychology open access