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We propose a two-step procedure to model and predict high-dimensional functional time series, where the number of function-valued time series $p$ is large in relation to the length of time series $n$. Our first step performs an…

统计方法学 · 统计学 2024-06-04 Jinyuan Chang , Qin Fang , Xinghao Qiao , Qiwei Yao

Deep learning has contributed remarkably to the advancement of time series analysis. Still, deep models can encounter performance bottlenecks in real-world data-scarce scenarios, which can be concealed due to the performance saturation with…

机器学习 · 计算机科学 2024-10-21 Yong Liu , Haoran Zhang , Chenyu Li , Xiangdong Huang , Jianmin Wang , Mingsheng Long

Large-scale pre-trained models (PTMs) such as BERT and GPT have recently achieved great success in Natural Language Processing and Computer Vision domains. However, the development of PTMs on healthcare time-series data is lagging…

机器学习 · 计算机科学 2024-09-10 Ziyang Song , Qincheng Lu , Hao Xu , He Zhu , David L. Buckeridge , Yue Li

We formulate a reduced-order strategy for efficiently forecasting complex high-dimensional dynamical systems entirely based on data streams. The first step of our method involves reconstructing the dynamics in a reduced-order subspace of…

数据分析、统计与概率 · 物理学 2017-03-08 Zhong Yi Wan , Themistoklis P. Sapsis

Accurate time series prediction over long future horizons is challenging and of great interest to both practitioners and academics. As a well-known intelligent algorithm, the standard formulation of Support Vector Regression (SVR) could be…

机器学习 · 计算机科学 2014-01-14 Yukun Bao , Tao Xiong , Zhongyi Hu

Recent efforts have been dedicated to enhancing time series forecasting accuracy by introducing advanced network architectures and self-supervised pretraining strategies. Nevertheless, existing approaches still exhibit two critical…

机器学习 · 计算机科学 2024-06-19 Zhiding Liu , Jiqian Yang , Mingyue Cheng , Yucong Luo , Zhi Li

Although spatio-temporal graph neural networks have achieved great empirical success in handling multiple correlated time series, they may be impractical in some real-world scenarios due to a lack of sufficient high-quality training data.…

信号处理 · 电气工程与系统科学 2021-02-10 Chao Pan , Siheng Chen , Antonio Ortega

In nonlinear dynamical systems, tipping refers to a critical transition from one steady state to another, typically catastrophic, steady state, often resulting from a saddle-node bifurcation. Recently, the machine-learning framework of…

混沌动力学 · 物理学 2026-04-09 Smita Deb , Zheng-Meng Zhai , Mulugeta Haile , Ying-Cheng Lai

Weather Forecasting is an attractive challengeable task due to its influence on human life and complexity in atmospheric motion. Supported by massive historical observed time series data, the task is suitable for data-driven approaches,…

机器学习 · 计算机科学 2022-09-20 Minbo Ma , Peng Xie , Fei Teng , Tianrui Li , Bin Wang , Shenggong Ji , Junbo Zhang

Big time series are increasingly available from an ever wider range of IoT-enabled sensors deployed in various environments. Significant insights can be gained by mining temporal patterns from these time series. Temporal pattern mining…

数据库 · 计算机科学 2023-06-21 Van Long Ho , Nguyen Ho , Torben Bach Pedersen , Panagiotis Papapetrou

Large language models (LLMs) are often trained on extensive, temporally indiscriminate text corpora, reflecting the lack of datasets with temporal metadata. This approach is not aligned with the evolving nature of language. Conventional…

计算与语言 · 计算机科学 2024-04-30 Felix Drinkall , Eghbal Rahimikia , Janet B. Pierrehumbert , Stefan Zohren

This paper develops an approach for multi-step forecasting of dynamical systems by integrating probabilistic input forecasting with physics-informed output prediction. Accurate multi-step forecasting of time series systems is important for…

机器学习 · 统计学 2026-01-13 Mahdi Nasiri , Johanna Kortelainen , Simo Särkkä

Very large time series are increasingly available from an ever wider range of IoT-enabled sensors deployed in different environments. Significant insights can be gained by mining temporal patterns from these time series. Unlike traditional…

数据库 · 计算机科学 2021-11-18 Van Long Ho , Nguyen Ho , Torben Bach Pedersen

Spatial-temporal prediction is a fundamental problem for constructing smart city, which is useful for tasks such as traffic control, taxi dispatching, and environmental policy making. Due to data collection mechanism, it is common to see…

机器学习 · 计算机科学 2020-08-25 Huaxiu Yao , Yiding Liu , Ying Wei , Xianfeng Tang , Zhenhui Li

Multivariate time series forecasting in graph-structured domains is critical for real-world applications, yet existing spatiotemporal models often suffer from performance degradation under data scarcity and cross-domain shifts. We address…

机器学习 · 计算机科学 2026-02-05 Zihao Jing , Yuxi Long , Ganlin Feng

Learning time-series representations for discriminative tasks, such as classification and regression, has been a long-standing challenge in the healthcare domain. Current pre-training methods are limited in either unidirectional next-token…

人工智能 · 计算机科学 2024-08-27 Ziyang Song , Qincheng Lu , He Zhu , David Buckeridge , Yue Li

Deciding the best future execution time is a critical task in many business activities while evolving time series forecasting, and optimal timing strategy provides such a solution, which is driven by observed data. This solution has plenty…

人工智能 · 计算机科学 2023-10-10 Chen Pan , Fan Zhou , Xuanwei Hu , Xinxin Zhu , Wenxin Ning , Zi Zhuang , Siqiao Xue , James Zhang , Yunhua Hu

Predicting the completion time of business process instances would be a very helpful aid when managing processes under service level agreement constraints. The ability to know in advance the trend of running process instances would allow…

机器学习 · 计算机科学 2017-11-13 Nicolò Navarin , Beatrice Vincenzi , Mirko Polato , Alessandro Sperduti

Recent innovations in diffusion probabilistic models have paved the way for significant progress in image, text and audio generation, leading to their applications in generative time series forecasting. However, leveraging such abilities to…

机器学习 · 计算机科学 2025-11-07 Yuansan Liu , Sudanthi Wijewickrema , Dongting Hu , Christofer Bester , Stephen O'Leary , James Bailey

Unrestricted multi-agent racing presents a significant research challenge, requiring decision-making at the limits of a robot's operational capabilities. While previous approaches have either ignored spatiotemporal information in the…

机器人学 · 计算机科学 2025-06-23 Nadine Imholz , Maurice Brunner , Nicolas Baumann , Edoardo Ghignone , Michele Magno