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相关论文: Omni-Dimensional Frequency Learner for General Tim…

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Current artificial neural networks mainly conduct the learning process in the spatial domain but neglect the frequency domain learning. However, the learning course performed in the frequency domain can be more efficient than that in the…

计算机视觉与模式识别 · 计算机科学 2022-02-21 Shaocheng Jia , Wei Yao

Time series analysis by state-space models is widely used in forecasting and extracting unobservable components like level, slope, and seasonality, along with explanatory variables. However, their reliance on traditional Kalman filtering…

机器学习 · 统计学 2024-08-20 André Ramos , Davi Valladão , Alexandre Street

We propose a novel framework in high-dimensional factor models to simultaneously analyse multiple tensor time series, each with potentially different tensor orders and dimensionality. The connection between different tensor time series is…

统计方法学 · 统计学 2025-09-19 Zetai Cen

Dimensionality reduction (DR) plays a vital role in the visual analysis of high-dimensional data. One main aim of DR is to reveal hidden patterns that lie on intrinsic low-dimensional manifolds. However, DR often overlooks important…

机器学习 · 计算机科学 2023-02-28 Takanori Fujiwara , Yun-Hsin Kuo , Anders Ynnerman , Kwan-Liu Ma

Federated learning (FL) enables collaborative learning without data centralization but introduces significant communication costs due to multiple communication rounds between clients and the server. One-shot federated learning (OSFL)…

机器学习 · 计算机科学 2026-01-30 Obaidullah Zaland , Shutong Jin , Florian T. Pokorny , Monowar Bhuyan

Time series anomaly detection is a challenging problem due to the complex temporal dependencies and the limited label data. Although some algorithms including both traditional and deep models have been proposed, most of them mainly focus on…

机器学习 · 计算机科学 2023-03-28 Chaoli Zhang , Tian Zhou , Qingsong Wen , Liang Sun

Delay-Doppler alignment modulation (DDAM) is a novel technique to mitigate time-frequency doubly selective channels by leveraging the high spatial resolution offered by large antenna arrays and multi-path sparsity of millimeter wave…

信号处理 · 电气工程与系统科学 2024-07-09 Xianda Liu , Zhiwen Zhou , Zhiqiang Xiao , Yong Zeng

Learning from multimodal datasets can leverage complementary information and improve performance in prediction tasks. A commonly used strategy to account for feature correlations in high-dimensional datasets is the latent variable approach.…

机器学习 · 计算机科学 2024-10-01 Lingchao Mao , Qi wang , Yi Su , Fleming Lure , Jing Li

A recent method based on the concurrence of complex networks and multifractal analyses is applied for the first time to explore ground-level ozone behavior. Ozone time series are converted into complex networks for their posterior analysis.…

大气与海洋物理 · 物理学 2023-11-20 R. Carmona-Cabezas , A. B. Ariza-Villaverde , E. Gutierrez de Rave , F. J. Jimenez-Hornero

Multifractal time series analysis is a approach that shows the possible complexity of the system. Nowadays, one of the most popular and the best methods for determining multifractal characteristics is Multifractal Detrended Fluctuation…

统计金融 · 定量金融 2015-10-20 Rafal Rak , Pawel Zięba

Traditional saliency map methods, popularized in computer vision, highlight individual points (pixels) of the input that contribute the most to the model's output. However, in time series, they offer limited insights, as semantically…

机器学习 · 计算机科学 2026-05-08 Christodoulos Kechris , Jonathan Dan , David Atienza

This paper is a contribution towards interpretability of the deep learning models in different applications of time-series. We propose a temporal attention layer that is capable of selecting the relevant information to perform various…

计算机视觉与模式识别 · 计算机科学 2018-06-25 Phongtharin Vinayavekhin , Subhajit Chaudhury , Asim Munawar , Don Joven Agravante , Giovanni De Magistris , Daiki Kimura , Ryuki Tachibana

Semantic communication can significantly improve bandwidth utilization in wireless systems by exploiting the meaning behind raw data. However, the advancements achieved through semantic communication are closely dependent on the development…

Oblique Decision Tree (ODT) separates the feature space by linear projections, as opposed to the conventional Decision Tree (DT) that forces axis-parallel splits. ODT has been proven to have a stronger representation ability than DT, as it…

机器学习 · 计算机科学 2025-02-04 Shen-Huan Lyu , Yi-Xiao He , Yanyan Wang , Zhihao Qu , Bin Tang , Baoliu Ye

This article presents our initial results in deep learning for channel estimation and signal detection in orthogonal frequency-division multiplexing (OFDM). OFDM has been widely adopted in wireless broadband communications to combat…

信息论 · 计算机科学 2017-08-30 Hao Ye , Geoffrey Ye Li , Biing-Hwang Fred Juang

We present a high-order radial basis function finite difference (RBF-FD) framework for the solution of advection-diffusion equations on time-varying domains. Our framework is based on a generalization of the recently developed Overlapped…

数值分析 · 数学 2021-09-15 Varun Shankar , Grady B. Wright , Aaron L. Fogelson

In recent years, the attention towards One-Shot Federated Learning (OSFL) has been driven by its capacity to minimize communication. With the development of the diffusion model (DM), several methods employ the DM for OSFL, utilizing model…

计算机视觉与模式识别 · 计算机科学 2024-07-30 Mingzhao Yang , Shangchao Su , Bin Li , Xiangyang Xue

The random vector functional link (RVFL) network is well-regarded for its strong generalization capabilities in the field of machine learning. However, its inherent dependencies on the square loss function make it susceptible to noise and…

机器学习 · 计算机科学 2024-10-08 M. Sajid , A. Quadir , M. Tanveer

Deep-learning (DL) has emerged as a powerful machine-learning technique for several classic problems encountered in generic wireless communications. Specifically, random Fourier Features (RFF) based deep-learning has emerged as an…

信息论 · 计算机科学 2021-01-14 Rangeet Mitra , Georges Kaddoum

Recent learning-based methods for event-based optical flow estimation utilize cost volumes for pixel matching but suffer from redundant computations and limited scalability to higher resolutions for flow refinement. In this work, we take…

计算机视觉与模式识别 · 计算机科学 2025-06-23 Daikun Liu , Lei Cheng , Teng Wang , changyin Sun