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Vision Transformers face a fundamental limitation: standard self-attention jointly processes spatial and channel dimensions, leading to entangled representations that prevent independent modeling of structural and semantic dependencies.…

Computer Vision and Pattern Recognition · Computer Science 2025-12-05 Jiashu Liao , Pietro Liò , Marc de Kamps , Duygu Sarikaya

Coordinating the operations of separate wireless systems at the wavelength level can lead to significant improvements in wireless capabilities. We address a fundamental challenge in distributed radio frequency system cooperation -…

Signal Processing · Electrical Eng. & Systems 2020-10-21 Serge R. Mghabghab , Sean M. Ellison , Jeffrey A. Nanzer

Modeling temporal characteristics and the non-stationary dynamics of body movement plays a significant role in predicting human future motions. However, it is challenging to capture these features due to the subtle transitions involved in…

Computer Vision and Pattern Recognition · Computer Science 2024-11-28 Yuming Feng , Zhiyang Dou , Ling-Hao Chen , Yuan Liu , Tianyu Li , Jingbo Wang , Zeyu Cao , Wenping Wang , Taku Komura , Lingjie Liu

The temporal complexity of electronic health record (EHR) data presents significant challenges for predicting clinical outcomes using machine learning. This paper proposes ChronoFormer, an innovative transformer based architecture…

Machine Learning · Computer Science 2025-04-11 Yuanyun Zhang , Shi Li

Time series foundation models (TSFMs) have recently achieved remarkable success in universal forecasting by leveraging large-scale pretraining on diverse time series data. Complementing this progress, incorporating frequency-domain…

Machine Learning · Computer Science 2026-04-14 Shunyu Wu , Jiawei Huang , Weibin Feng , Boxin Li , Xiao Zhang , Erli Meng , Dan Li , Jian Lou , See-Kiong Ng

In the fields of brain-computer interaction and cognitive neuroscience, effective decoding of auditory signals from task-based functional magnetic resonance imaging (fMRI) is key to understanding how the brain processes complex auditory…

Neurons and Cognition · Quantitative Biology 2024-06-05 Wanli Ma , Xuegang Tang , Jin Gu , Ying Wang , Yuling Xia

Medical image segmentation faces challenges due to variations in anatomical structures. While convolutional neural networks (CNNs) effectively capture local features, they struggle with modeling long-range dependencies. Transformers…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Lalit Maurya , Honghai Liu , Reyer Zwiggelaar

Transformer-based methods have achieved impressive results in time series forecasting. However, existing Transformers still exhibit limitations in sequence modeling as they tend to overemphasize temporal dependencies. This incurs additional…

Machine Learning · Computer Science 2025-12-16 Tan Wang , Yun Wei Dong , Qi Wang

Signal decomposition is an effective tool to assist the identification of modal information in time-domain signals. Two signal decomposition methods, including the empirical wavelet transform (EWT) and Fourier decomposition method (FDM),…

Signal Processing · Electrical Eng. & Systems 2023-01-31 Wei Zhou , Zhongren Feng , Y. F. Xu , Xiongjiang Wang , Hao Lv

Accurate traffic forecasting is essential for intelligent transportation systems, supporting a wide range of real-world applications. However, it remains challenging due to two key factors:~(1) Traffic series contain heterogeneous temporal…

Artificial Intelligence · Computer Science 2026-05-26 Ruiwen Gu , Qitai Tan , Yahao Liu , Xiao-Ping Zhang

The timing of cell divisions in early embryos during the In-Vitro Fertilization (IVF) process is a key predictor of embryo viability. However, observing cell divisions in Time-Lapse Monitoring (TLM) is a time-consuming process and highly…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Tien-Phat Nguyen , Trong-Thang Pham , Tri Nguyen , Hieu Le , Dung Nguyen , Hau Lam , Phong Nguyen , Jennifer Fowler , Minh-Triet Tran , Ngan Le

This article describes the development of a novel U-Net-enhanced Wavelet Neural Operator (U-WNO),which combines wavelet decomposition, operator learning, and an encoder-decoder mechanism. This approach harnesses the superiority of the…

Image and Video Processing · Electrical Eng. & Systems 2024-11-27 Pranava Seth , Deepak Mishra , Veena Iyer

Biological signals, such as electroencephalograms (EEG), play a crucial role in numerous clinical applications, exhibiting diverse data formats and quality profiles. Current deep learning models for biosignals are typically specialized for…

Signal Processing · Electrical Eng. & Systems 2023-05-18 Chaoqi Yang , M. Brandon Westover , Jimeng Sun

Deep learning has dramatically improved the performance of sounds recognition. However, learning acoustic models directly from the raw waveform is still challenging. Current waveform-based models generally use time-domain convolutional…

Sound · Computer Science 2018-03-29 Boqing Zhu , Changjian Wang , Feng Liu , Jin Lei , Zengquan Lu , Yuxing Peng

In precision frequency transfer systems, stringent requirements are imposed on the phase stability of transmitted signals. Throughout the transmission process, the inherent challenges of long-haul signal propagation inevitably introduce…

Optics · Physics 2025-12-24 Xuan Yang. Junhui Li , Bin Luo , Ziyang Chen , Hong guo

Transformers have demonstrated remarkable performance in natural language processing and computer vision. However, existing vision Transformers struggle to learn from limited medical data and are unable to generalize on diverse medical…

Image and Video Processing · Electrical Eng. & Systems 2023-04-06 Yunhe Gao , Mu Zhou , Di Liu , Zhennan Yan , Shaoting Zhang , Dimitris N. Metaxas

Medical time series (MedTS) data, such as Electroencephalography (EEG) and Electrocardiography (ECG), play a crucial role in healthcare, such as diagnosing brain and heart diseases. Existing methods for MedTS classification primarily rely…

Signal Processing · Electrical Eng. & Systems 2024-10-22 Yihe Wang , Nan Huang , Taida Li , Yujun Yan , Xiang Zhang

Wavelet transforms, a powerful mathematical tool, have been widely used in different domains, including Signal and Image processing, to unravel intricate patterns, enhance data representation, and extract meaningful features from data.…

Computation and Language · Computer Science 2025-08-04 Rana Aref Salama , Abdou Youssef , Mona Diab

To define the neural networks responsible of the epileptic seizure, we had to study the electrophysiological signal in a proper way. The early recognition of the seizure build up could also be defined through the time space mapping of the…

Signal Processing · Electrical Eng. & Systems 2019-11-19 Ridha Jarray , Nawel Jmail , Abir Hadriche , Tarek Frikha , Chokri Ben Amar

Time series data analysis is a critical component in various domains such as finance, healthcare, and meteorology. Despite the progress in deep learning for time series analysis, there remains a challenge in addressing the non-stationary…

Machine Learning · Computer Science 2025-09-12 Han Yu , Peikun Guo , Akane Sano
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