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Sleep-wake cycle detection is a key step when extrapolating sleep patterns from actigraphy data. Numerous supervised detection algorithms have been developed with parameters estimated from and optimized for a particular dataset, yet their…

Applications · Statistics 2021-12-01 Shanshan Chen , Xinxin Sun

Understanding sleep and activity patterns plays a crucial role in physical and mental health. This study introduces a novel approach for sleep detection using weakly supervised learning for scenarios where reliable ground truth labels are…

Machine Learning · Computer Science 2024-07-09 Matthias Boeker , Vajira Thambawita , Michael Riegler , Pål Halvorsen , Hugo L. Hammer

Common medical conditions are often associated with sleep abnormalities. Patients with medical disorders often suffer from poor sleep quality compared to healthy individuals, which in turn may worsen the symptoms of the disorder. Accurate…

Machine Learning · Computer Science 2018-02-23 Lena Granovsky , Gabi Shalev , Nancy Yacovzada , Yotam Frank , Shai Fine

Isolated rapid eye movement sleep behavior disorder (iRBD) is a major prodromal marker of $\alpha$-synucleinopathies, often preceding the clinical onset of Parkinson's disease, dementia with Lewy bodies, or multiple system atrophy. While…

Cell detection is the task of detecting the approximate positions of cell centroids from microscopy images. Recently, convolutional neural network-based approaches have achieved promising performance. However, these methods require a…

Computer Vision and Pattern Recognition · Computer Science 2021-07-20 Kazuya Nishimura , Hyeonwoo Cho , Ryoma Bise

Motor activity of humans displays complex temporal fluctuations which can be characterized by scale-invariant statistics, thus documenting that structure and fluctuations of such kinetics remain similar over a broad range of time scales.…

Neurons and Cognition · Quantitative Biology 2016-06-22 E. Gudowska-Nowak , J. K. Ochab , K. Oles , E. Beldzik , D. R. Chialvo , A. Domagalik , M. Fafrowicz , T. Marek , M. A. Nowak , H. Oginska , J. Szwed , J. Tyburczyk

Much attention has been given to automatic sleep staging algorithms in past years, but the detection of discrete events in sleep studies is also crucial for precise characterization of sleep patterns and possible diagnosis of sleep…

Signal Processing · Electrical Eng. & Systems 2020-04-14 Alexander Neergaard Olesen , Stanislas Chambon , Valentin Thorey , Poul Jennum , Emmanuel Mignot , Helge B. D. Sorensen

Automatic sleep staging is essential for sleep assessment and disorder diagnosis. Most existing methods depend on one specific dataset and are limited to be generalized to other unseen datasets, for which the training data and testing data…

Signal Processing · Electrical Eng. & Systems 2025-05-12 Jiquan Wang , Sha Zhao , Haiteng Jiang , Shijian Li , Tao Li , Gang Pan

Label noise is a common problem in real-world datasets, affecting both model training and validation. Clean data are essential for achieving strong performance and ensuring reliable evaluation. While various techniques have been proposed to…

Machine Learning · Computer Science 2025-10-21 Henrique Pickler , Jorge K. S. Kamassury , Danilo Silva

Improper or erroneous labelling can pose a hindrance to reliable generalization for supervised learning. This can have negative consequences, especially for critical fields such as healthcare. We propose an effective new approach for…

Machine Learning · Computer Science 2021-11-16 Konstantinos Nikolaidis , Thomas Plagemann , Stein Kristiansen , Vera Goebel , Mohan Kankanhalli

Patients with sleep disorders can better manage their lifestyle if they know about their special situations. Detection of such sleep disorders is usually possible by analyzing a number of vital signals that have been collected from the…

Signal Processing · Electrical Eng. & Systems 2020-04-14 Mohamadreza Jafaryani , Saeed Khorram , Vahid Pourahmadi , Minoo Shahbazi

Study Objectives: Wrist accelerometry is widely used for inferring sleep-wake state. Previous works demonstrated poor wake detection, without cross-device generalizability and validation in different age range and sleep disorders. We…

Quantitative Methods · Quantitative Biology 2025-12-02 Nasim Montazeri , Stone Yang , Dominik Luszczynski , John Zhang , Dharmendra Gurve , Andrew Centen , Maged Goubran , Andrew Lim

The classification of sleep stages plays a crucial role in understanding and diagnosing sleep pathophysiology. Sleep stage scoring relies heavily on visual inspection by an expert that is time consuming and subjective procedure. Recently,…

Signal Processing · Electrical Eng. & Systems 2022-12-12 Aref Einizade , Samaneh Nasiri , Sepideh Hajipour Sardouie , Gari Clifford

Sleep staging is essential for the assessment of sleep quality and the diagnosis of sleep-related disorders. Conventional polysomnography (PSG), while considered the gold standard, is intrusive, labor-intensive, and unsuitable for long-term…

Signal Processing · Electrical Eng. & Systems 2026-04-21 Zhuo Diao , Yueting Li , Jianpeng Wang , Shengyu Guan , Xinwei Wang , Wenxiong Cui , Xin Shi , Tong Liu , Kailai Sun , Jingyu Wang , Dian Fan , Thomas Penzel

We propose a nonparametric model for time series with missing data based on low-rank matrix factorization. The model expresses each instance in a set of time series as a linear combination of a small number of shared basis functions.…

Sleep state classification is vital in managing and understanding sleep patterns and is generally the first step in identifying acute or chronic sleep disorders. However, it is essential to do this without affecting the natural environment…

Signal Processing · Electrical Eng. & Systems 2020-11-19 Nemath Ahmed , Aashit Singh , Srivyshnav KS , Gulshan Kumar , Gaurav Parchani , Vibhor Saran

Time-resolved spectral techniques play an important analysis tool in many contexts, from physical chemistry to biomedicine. Customarily, the label-free detection of analytes is manually performed by experts through the aid of classic…

Machine Learning · Computer Science 2020-11-17 Stefano Rini , Hirotsugu Hiramatsu

Detection of periodic patterns of interest within noisy time series data plays a critical role in various tasks, spanning from health monitoring to behavior analysis. Existing learning techniques often rely on labels or clean versions of…

Machine Learning · Computer Science 2025-06-24 Berken Utku Demirel , Christian Holz

Detecting anomalies in temporal data has gained significant attention across various real-world applications, aiming to identify unusual events and mitigate potential hazards. In practice, situations often involve a mix of segment-level…

Machine Learning · Computer Science 2025-01-22 Yaxuan Wang , Hao Cheng , Jing Xiong , Qingsong Wen , Han Jia , Ruixuan Song , Liyuan Zhang , Zhaowei Zhu , Yang Liu

Sleep constitutes a key indicator of human health, performance, and quality of life. Sleep deprivation has long been related to the onset, development, and worsening of several mental and metabolic disorders, constituting an essential…

Signal Processing · Electrical Eng. & Systems 2023-01-25 María Martínez-García , Fernando Moreno-Pino , Pablo M. Olmos , Antonio Artés-Rodríguez
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