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Multivariate time series have many applications, from healthcare and meteorology to life science. Although deep learning models have shown excellent predictive performance for time series, they have been criticised for being "black-boxes"…

机器学习 · 计算机科学 2024-05-06 Qiqi Su , Christos Kloukinas , Artur d'Avila Garcez

Accurate forecasting of spatiotemporal data remains challenging due to complex spatial dependencies and temporal dynamics. The inherent uncertainty and variability in such data often render deterministic models insufficient, prompting a…

机器学习 · 计算机科学 2024-11-05 Mingze Gong , Lei Chen , Jia Li

Processing and analyzing time series data\-sets have become a central issue in many domains requiring data management systems to support time series as a native data type. A crucial prerequisite of these systems is time series matching,…

数据库 · 计算机科学 2021-10-12 Lars Kegel , Claudio Hartmann , Maik Thiele , Wolfgang Lehner

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

Text-to-image diffusion models benefit artists with high-quality image generation. Yet their stochastic nature hinders artists from creating consistent images of the same subject. Existing methods try to tackle this challenge and generate…

计算机视觉与模式识别 · 计算机科学 2024-10-29 Jiahao Wang , Caixia Yan , Haonan Lin , Weizhan Zhang , Mengmeng Wang , Tieliang Gong , Guang Dai , Hao Sun

Self-supervised representation learning, particularly through contrastive methods like TS2Vec, has advanced the analysis of time series data. However, these models often falter in forecasting tasks because their objective functions…

机器学习 · 计算机科学 2025-12-01 Ganeshan Niroshan , Uthayasanker Thayasivam

Time-series forecasting is crucial for numerous real-world applications including weather prediction and financial market modeling. While temporal-domain methods remain prevalent, frequency-domain approaches can effectively capture…

机器学习 · 计算机科学 2025-08-05 Zhixuan Li , Naipeng Chen , Seonghwa Choi , Sanghoon Lee , Weisi Lin

Time series analysis finds wide applications in fields such as weather forecasting, anomaly detection, and behavior recognition. Previous methods attempted to model temporal variations directly using 1D time series. However, this has been…

机器学习 · 计算机科学 2024-11-08 Qiang Wu , Gechang Yao , Zhixi Feng , Shuyuan Yang

Among recent developments in time series forecasting methods, deep forecasting models have gained popularity as they can utilize hidden feature patterns in time series to improve forecasting performance. Nevertheless, the majority of…

机器学习 · 计算机科学 2023-10-13 Zhendong Wang , Ioanna Miliou , Isak Samsten , Panagiotis Papapetrou

Time series data in real-world scenarios contain a substantial amount of nonlinear information, which significantly interferes with the training process of models, leading to decreased prediction performance. Therefore, during the time…

机器学习 · 计算机科学 2024-06-05 Dandan Zhang , Zhiqiang Zhang , Nanguang Chen , Yun Wang

Recently, deep neural networks have gained increasing popularity in the field of time series forecasting. A primary reason for their success is their ability to effectively capture complex temporal dynamics across multiple related time…

机器学习 · 计算机科学 2022-06-23 Xiaoyong Jin , Youngsuk Park , Danielle C. Maddix , Hao Wang , Yuyang Wang

Transformer-based models, despite their promise for long-term time series forecasting (LTSF), suffer from an inherent low-pass filtering effect that limits their effectiveness. This issue arises due to undifferentiated propagation of…

机器学习 · 计算机科学 2026-01-23 Jingjing Bai , Yoshinobu Kawahara

Real-world time series often exhibit complex interdependencies that cannot be captured in isolation. Global models that model past data from multiple related time series globally while producing series-specific forecasts locally are now…

机器学习 · 计算机科学 2024-05-14 Abishek Sriramulu , Christoph Bergmeir , Slawek Smyl

Recent breakthroughs in natural language processing and computer vision, driven by efficient pre-training on large datasets, have enabled foundation models to excel on a wide range of tasks. However, this potential has not yet been fully…

机器学习 · 计算机科学 2025-02-03 Özgün Turgut , Philip Müller , Martin J. Menten , Daniel Rueckert

Real-world time series data are inherently multivariate, often exhibiting complex inter-channel dependencies. Each channel is typically sampled at its own period and is prone to missing values due to various practical and operational…

机器学习 · 计算机科学 2026-03-11 Jinkwan Jang , Hyungjin Park , Jinmyeong Choi , Taesup Kim

Global medium-range weather forecasting is critical to decision-making across many social and economic domains. Traditional numerical weather prediction uses increased compute resources to improve forecast accuracy, but cannot directly use…

Time series forecasting remains a central challenge problem in almost all scientific disciplines. We introduce a novel load forecasting method in which observed dynamics are modeled as a forced linear system using Dynamic Mode Decomposition…

物理与社会 · 物理学 2021-07-13 Daniel Dylewsky , David Barajas-Solano , Tong Ma , Alexandre M. Tartakovsky , J. Nathan Kutz

One unique property of time series is that the temporal relations are largely preserved after downsampling into two sub-sequences. By taking advantage of this property, we propose a novel neural network architecture that conducts sample…

机器学习 · 计算机科学 2022-10-14 Minhao Liu , Ailing Zeng , Muxi Chen , Zhijian Xu , Qiuxia Lai , Lingna Ma , Qiang Xu

In this work, we propose an ensemble forecasting approach based on randomized neural networks. Improved randomized learning streamlines the fitting abilities of individual learners by generating network parameters in accordance with the…

机器学习 · 计算机科学 2021-07-12 Grzegorz Dudek , Paweł Pełka

Time series forecasting (TSF) remains a challenging problem due to the intricate entanglement of intraperiod-fluctuations and interperiod-trends. While recent advances have attempted to reshape 1D sequences into 2D period-phase…

机器学习 · 计算机科学 2026-03-04 Yixin Wang , Yifan Hu , Peiyuan Liu , Naiqi Li , Dai Tao , Shu-Tao Xia
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