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Over the past decade, multivariate time series classification has received great attention. We propose transforming the existing univariate time series classification models, the Long Short Term Memory Fully Convolutional Network (LSTM-FCN)…

机器学习 · 计算机科学 2019-07-03 Fazle Karim , Somshubra Majumdar , Houshang Darabi , Samuel Harford

In this paper we introduce a new 2D modulation technique called OTFS (Orthogonal Time Frequency & Space) that transforms information carried in the Delay-Doppler coordinate system to the familiar time-frequency domain utilized by…

信息论 · 计算机科学 2016-08-11 Anton Monk , Ronny Hadani , Michail Tsatsanis , Shlomo Rakib

Attention mechanisms have significantly advanced visual models by capturing global context effectively. However, their reliance on large-scale datasets and substantial computational resources poses challenges in data-scarce and…

计算机视觉与模式识别 · 计算机科学 2024-12-03 Chenghao Li , Chaoning Zhang , Boheng Zeng , Yi Lu , Pengbo Shi , Qingzi Chen , Jirui Liu , Lingyun Zhu , Yang Yang , Heng Tao Shen

Accurate weather forecasting is crucial in various sectors, impacting decision-making processes and societal events. Data-driven approaches based on machine learning models have recently emerged as a promising alternative to numerical…

机器学习 · 计算机科学 2024-05-14 Zijie Li , Anthony Zhou , Saurabh Patil , Amir Barati Farimani

Many medical ultrasound video recognition tasks involve identifying key anatomical features regardless of when they appear in the video suggesting that modeling such tasks may not benefit from temporal features. Correspondingly, model…

计算机视觉与模式识别 · 计算机科学 2023-10-17 D. Hudson Smith , John Paul Lineberger , George H. Baker

Machine learning algorithms are designed to capture complex relationships between features. In this context, the high dimensionality of data often results in poor model performance, with the risk of overfitting. Feature selection, the…

机器学习 · 计算机科学 2023-10-18 Paolo Bonetti , Alberto Maria Metelli , Marcello Restelli

Due to the superior ability of global dependency, transformer and its variants have become the primary choice in Masked Time-series Modeling (MTM) towards time-series classification task. In this paper, we experimentally analyze that…

机器学习 · 计算机科学 2024-12-19 Yudong Han , Haocong Wang , Yupeng Hu , Yongshun Gong , Xuemeng Song , Weili Guan

Motion prediction plays an essential role in autonomous driving systems, enabling autonomous vehicles to achieve more accurate local-path planning and driving decisions based on predictions of the surrounding vehicles. However, existing…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Zhanwen Liu , Chao Li , Yang Wang , Nan Yang , Xing Fan , Jiaqi Ma , Xiangmo Zhao

As Transformer-based models have achieved impressive performance on various time series tasks, Long-Term Series Forecasting (LTSF) tasks have also received extensive attention in recent years. However, due to the inherent computational…

机器学习 · 计算机科学 2024-02-06 Daojun Liang , Haixia Zhang , Dongfeng Yuan , Xiaoyan Ma , Dongyang Li , Minggao Zhang

Learning physically meaningful spatiotemporal representations from high-resolution multivariate Earth observation data is challenging due to strong local dynamics, long-range teleconnections, multi-scale interactions, and nonstationarity.…

机器学习 · 计算机科学 2026-01-19 Francis Ndikum Nji , Jianwu Wang

In this paper, we propose time and frequency synchronization techniques for uplink multiuser OTFS (MU-OTFS) systems in high-mobility scenarios. This work focuses on accurately estimating and correcting timing offsets (TOs) and carrier…

信号处理 · 电气工程与系统科学 2025-07-25 Mohsen Bayat , Sanoopkumar P. S. , Arman Farhang

Clustering multivariate time series (MTS) is challenging due to non-stationary cross-dependencies, noise contamination, and gradual or overlapping state boundaries. We introduce a robust fuzzy clustering framework in the spectral domain…

应用统计 · 统计学 2025-11-03 Ziling Ma , Mara Sherlin Talento , Ying Sun , Hernando Ombao

Regression problems with time-series predictors are common in banking and many other areas of application. In this paper, we use multi-head attention networks to develop interpretable features and use them to achieve good predictive…

机器学习 · 计算机科学 2022-05-26 Tianjie Wang , Jie Chen , Joel Vaughan , Vijayan N. Nair

In the field of psychopathology, Ecological Momentary Assessment (EMA) studies offer rich individual data on psychopathology-relevant variables (e.g., affect, behavior, etc) in real-time. EMA data is collected dynamically, represented as…

机器学习 · 计算机科学 2024-05-09 Mandani Ntekouli , Gerasimos Spanakis , Lourens Waldorp , Anne Roefs

Sequence modeling faces challenges in capturing long-range dependencies across diverse tasks. Recent linear and transformer-based forecasters have shown superior performance in time series forecasting. However, they are constrained by their…

机器学习 · 计算机科学 2024-11-25 Bong Gyun Kang , Dongjun Lee , HyunGi Kim , DoHyun Chung , Sungroh Yoon

Feature Selection (FS) is crucial for improving model interpretability, reducing complexity, and sometimes for enhancing accuracy. The recently introduced Tsetlin machine (TM) offers interpretable clause-based learning, but lacks…

机器学习 · 计算机科学 2025-08-12 Vojtech Halenka , Ole-Christoffer Granmo , Lei Jiao , Per-Arne Andersen

As a crucial component in intelligent transportation systems, traffic flow prediction has recently attracted widespread research interest in the field of artificial intelligence (AI) with the increasing availability of massive traffic…

机器学习 · 计算机科学 2020-06-17 Lingbo Liu , Jiajie Zhen , Guanbin Li , Geng Zhan , Zhaocheng He , Bowen Du , Liang Lin

Image classification models have achieved satisfactory performance on many datasets, sometimes even better than human. However, The model attention is unclear since the lack of interpretability. This paper investigates the fidelity and…

计算机视觉与模式识别 · 计算机科学 2020-09-30 Wenjia Xu , Jiuniu Wang , Yang Wang , Guangluan Xu , Wei Dai , Yirong Wu

Learning object-level, structured representations is widely regarded as a key to better generalization in vision and underpins the design of next-generation Pre-trained Vision Models (PVMs). Mainstream Object-Centric Learning (OCL) methods…

计算机视觉与模式识别 · 计算机科学 2025-10-09 Hongjia Liu , Rongzhen Zhao , Haohan Chen , Joni Pajarinen

Orthogonal time frequency space (OTFS) modulation is a 2-dimensional (2D) modulation scheme designed in the delay-Doppler domain, unlike traditional modulation schemes which are designed in the time-frequency domain. Through a series of 2D…

信息论 · 计算机科学 2018-02-06 K. R. Murali , A. Chockalingam
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