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Time series analysis has emerged as an important tool for improving patient diagnosis and management in healthcare applications. However, these applications commonly face two critical challenges: time misalignment and data sparsity.…

机器学习 · 统计学 2025-09-25 Dohyun Ku , Catherine D. Chong , Visar Berisha , Todd J. Schwedt , Jing Li

This paper studies the classification problem on electroencephalogram (EEG) data of mental tasks, using standard architecture of three-layer CNN, stacked LSTM, stacked GRU. We further propose a novel classifier - a mixed LSTM model with a…

信号处理 · 电气工程与系统科学 2019-10-09 Zeyu Bai , Ruizhi Yang , Youzhi Liang

Anomaly Detection in multivariate time series is a major problem in many fields. Due to their nature, anomalies sparsely occur in real data, thus making the task of anomaly detection a challenging problem for classification algorithms to…

机器学习 · 计算机科学 2023-08-08 Anastasios Iliopoulos , John Violos , Christos Diou , Iraklis Varlamis

Kernel-based approaches for sequence classification have been successfully applied to a variety of domains, including the text categorization, image classification, speech analysis, biological sequence analysis, time series and music…

机器学习 · 计算机科学 2014-10-01 Pavel P. Kuksa

Comparing and aligning large datasets is a pervasive problem occurring across many different knowledge domains. We introduce and study MREC, a recursive decomposition algorithm for computing matchings between data sets. The basic idea is to…

Magnetoencephalography (MEG) recordings of patients with epilepsy exhibit spikes, a typical biomarker of the pathology. Detecting those spikes allows accurate localization of brain regions triggering seizures. Spike detection is often…

计算机视觉与模式识别 · 计算机科学 2023-10-16 Pauline Mouches , Thibaut Dejean , Julien Jung , Romain Bouet , Carole Lartizien , Romain Quentin

Decoding the human brain from electroencephalography (EEG) signals holds promise for understanding neurological activities. However, EEG data exhibit heterogeneity across subjects and sessions, limiting the generalization of existing…

计算工程、金融与科学 · 计算机科学 2026-02-03 Zhi Zhang , Yan Liu , Zhejing Hu , Gong Chen , Jiannong Cao , Shenghua Zhong , Sean Fontaine , Changhong Jing , Shuqiang Wang

Early time series classification (eTSC) is the problem of classifying a time series after as few measurements as possible with the highest possible accuracy. The most critical issue of any eTSC method is to decide when enough data of a time…

机器学习 · 计算机科学 2019-08-19 P. Schäfer , U. Leser

An essential part for the accurate classification of electrocardiogram (ECG) signals is the extraction of informative yet general features, which are able to discriminate diseases. Cardiovascular abnormalities manifest themselves in…

信号处理 · 电气工程与系统科学 2024-07-11 Maximilian P Oppelt , Maximilian Riehl , Felix P Kemeth , Jan Steffan

Recent advances in deep learning (DL) have significantly impacted motor imagery (MI)-based brain-computer interface (BCI) systems, enhancing the decoding of electroencephalography (EEG) signals. However, most studies struggle to identify…

机器学习 · 计算机科学 2024-09-09 Phairot Autthasan , Rattanaphon Chaisaen , Huy Phan , Maarten De Vos , Theerawit Wilaiprasitporn

Irregularly sampled multivariate time series (ISMTS) are prevalent in reality. Most existing methods treat ISMTS as synchronized regularly sampled time series with missing values, neglecting that the irregularities are primarily attributed…

机器学习 · 计算机科学 2024-12-03 Jiexi Liu , Meng Cao , Songcan Chen

Multivariate time series forecasting is extensively studied throughout the years with ubiquitous applications in areas such as finance, traffic, environment, etc. Still, concerns have been raised on traditional methods for incapable of…

机器学习 · 计算机科学 2018-09-10 Yen-Yu Chang , Fan-Yun Sun , Yueh-Hua Wu , Shou-De Lin

Similarity-based approaches represent a promising direction for time series analysis. However, many such methods rely on parameter tuning, and some have shortcomings if the time series are multivariate (MTS), due to dependencies between…

We consider the problem of extracting features from passive, multi-channel electroencephalogram (EEG) devices for downstream inference tasks related to high-level mental states such as stress and cognitive load. Our proposed method…

信号处理 · 电气工程与系统科学 2022-03-02 Guodong Chen , Hayden S. Helm , Kate Lytvynets , Weiwei Yang , Carey E. Priebe

Objectives: With the technological advancements in the field of tele-health monitoring, it is now possible to gather huge amounts of electro-physiological signals such as electrocardiogram (ECG). It is therefore necessary to develop…

机器学习 · 计算机科学 2020-05-19 Abdolrahman Peimankar , Sadasivan Puthusserypady

The lack of sufficient annotated image data is a common issue in medical image segmentation. For some organs and densities, the annotation may be scarce, leading to poor model training convergence, while other organs have plenty of…

图像与视频处理 · 电气工程与系统科学 2021-09-22 Anastasia Makarevich , Azade Farshad , Vasileios Belagiannis , Nassir Navab

As a critical mental health disorder, depression has severe effects on both human physical and mental well-being. Recent developments in EEG-based depression analysis have shown promise in improving depression detection accuracies. However,…

机器学习 · 计算机科学 2025-11-18 Zhijian Gong , Wenjia Dong , Xueyuan Xu , Fulin Wei , Chunyu Liu , Li Zhuo

In this paper, we propose a model for the Environment Sound Classification Task (ESC) that consists of multiple feature channels given as input to a Deep Convolutional Neural Network (CNN) with Attention mechanism. The novelty of the paper…

声音 · 计算机科学 2020-12-09 Jivitesh Sharma , Ole-Christoffer Granmo , Morten Goodwin

Understanding how the brain responds to sensory inputs is challenging: brain recordings are partial, noisy, and high dimensional; they vary across sessions and subjects and they capture highly nonlinear dynamics. These challenges have led…

神经元与认知 · 定量生物学 2022-10-03 Omar Chehab , Alexandre Defossez , Jean-Christophe Loiseau , Alexandre Gramfort , Jean-Remi King

This study presents a methodology for identifying the most informative frequencies and channels in electromyography (EMG) data to evaluate muscle recovery using Decision Tree classifiers. EMG signals, recorded from the vastus lateralis…

信号处理 · 电气工程与系统科学 2026-04-20 Albert A. Nasybullin , Nursultan Abdullaev , Maksim A. Baranov , Viacheslav V. Koshman , Vitaly A. Mahonin