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High-dimensional multivariate spatial-temporal data arise frequently in a wide range of applications; however, there are relatively few statistical methods that can simultaneously deal with spatial, temporal and variable-wise dependencies…

统计方法学 · 统计学 2020-02-05 Elynn Y. Chen , Xin Yun , Rong Chen , Qiwei Yao

Time-series forecasting has gained significant attention in machine learning due to its crucial role in various domains. However, most existing forecasting models rely heavily on point-wise loss functions like Mean Square Error, which treat…

机器学习 · 计算机科学 2025-07-16 Dilfira Kudrat , Zongxia Xie , Yanru Sun , Tianyu Jia , Qinghua Hu

Data-driven method for Structural Health Monitoring (SHM), that mine the hidden structural performance from the correlations among monitored time series data, has received widely concerns recently. However, missing data significantly…

机器学习 · 计算机科学 2023-04-04 Fan Deng , Xiaoming Tao , Pengxiang Wei , Shiyin Wei

Spatiotemporal data mining plays an important role in air quality monitoring, crowd flow modeling, and climate forecasting. However, the originally collected spatiotemporal data in real-world scenarios is usually incomplete due to sensor…

机器学习 · 计算机科学 2023-02-21 Mingzhe Liu , Han Huang , Hao Feng , Leilei Sun , Bowen Du , Yanjie Fu

Recent advances in stochastic differential equations (SDEs) have enabled robust modeling of real-world dynamical processes across diverse domains, such as finance, health, and systems biology. However, parameter estimation for SDEs…

机器学习 · 计算机科学 2026-01-29 Long Van Tran , Truyen Tran , Phuoc Nguyen

State-space models (SSMs) have recently attention as an efficient alternative to computationally expensive attention-based models for sequence modeling. They rely on linear recurrences to integrate information over time, enabling fast…

机器学习 · 计算机科学 2026-01-01 Mahdi Karami , Ali Behrouz , Peilin Zhong , Razvan Pascanu , Vahab Mirrokni

Probabilistic forecasting of multivariate time series is essential for various downstream tasks. Most existing approaches rely on the sequences being uniformly spaced and aligned across all variables. However, real-world multivariate time…

机器学习 · 计算机科学 2025-02-18 Yijun Li , Cheuk Hang Leung , Qi Wu

Recent years have witnessed a growing interest for time series foundation models, with a strong emphasis on the forecasting task. Yet, the crucial task of out-of-domain imputation of missing values remains largely underexplored. We propose…

机器学习 · 计算机科学 2025-11-11 Etienne Le Naour , Tahar Nabil , Ghislain Agoua

Spatio-temporal forecasting is essential for real-world applications such as traffic management and urban computing. Although recent methods have shown improved accuracy, they often fail to account for dynamic deviations between current…

机器学习 · 计算机科学 2025-10-07 Haotian Gao , Zheng Dong , Jiawei Yong , Shintaro Fukushima , Kenjiro Taura , Renhe Jiang

In this study, we present aLLM4TS, an innovative framework that adapts Large Language Models (LLMs) for time-series representation learning. Central to our approach is that we reconceive time-series forecasting as a self-supervised,…

机器学习 · 计算机科学 2024-03-12 Yuxuan Bian , Xuan Ju , Jiangtong Li , Zhijian Xu , Dawei Cheng , Qiang Xu

Temporal data, notably time series and spatio-temporal data, are prevalent in real-world applications. They capture dynamic system measurements and are produced in vast quantities by both physical and virtual sensors. Analyzing these data…

Time Series Classification (TSC) encompasses two settings: classifying entire sequences or classifying segmented subsequences. The raw time series for segmented TSC usually contain Multiple classes with Varying Duration of each class (MVD).…

人工智能 · 计算机科学 2025-04-24 Junru Chen , Tianyu Cao , Jing Xu , Jiahe Li , Zhilong Chen , Tao Xiao , Yang Yang

Time series modeling is a well-established problem, which often requires that methods (1) expressively represent complicated dependencies, (2) forecast long horizons, and (3) efficiently train over long sequences. State-space models (SSMs)…

机器学习 · 计算机科学 2023-03-17 Michael Zhang , Khaled K. Saab , Michael Poli , Tri Dao , Karan Goel , Christopher Ré

High-dimensional time series prediction is needed in applications as diverse as demand forecasting and climatology. Often, such applications require methods that are both highly scalable, and deal with noisy data in terms of corruptions or…

机器学习 · 计算机科学 2016-02-18 Hsiang-Fu Yu , Nikhil Rao , Inderjit S. Dhillon

Real-world clinical time series data sets exhibit a high prevalence of missing values. Hence, there is an increasing interest in missing data imputation. Traditional statistical approaches impose constraints on the data-generating process…

机器学习 · 计算机科学 2020-01-13 Yang Guo , Zhengyuan Liu , Pavitra Krishnswamy , Savitha Ramasamy

Predicting the evolution of diseases is challenging, especially when the data availability is scarce and incomplete. The most popular tools for modelling and predicting infectious disease epidemics are compartmental models. They stratify…

机器学习 · 计算机科学 2023-10-10 Esha Saha , Lam Si Tung Ho , Giang Tran

Short-term forecasting models typically assume the availability of input data (features) when they are deployed and in use. However, equipment failures, disruptions, cyberattacks, may lead to missing features when such models are used…

机器学习 · 统计学 2025-06-30 Akylas Stratigakos , Panagiotis Andrianesis

The efficiency of MapReduce is closely related to its load balance. Existing works on MapReduce load balance focus on coarse-grained scheduling. This study concerns fine-grained scheduling on MapReduce operations, with each operation…

分布式、并行与集群计算 · 计算机科学 2014-06-17 Liya Fan , Bo Gao , Fa Zhang , Zhiyong Liu

State Space Models (SSMs) have emerged as a potent tool in sequence modeling tasks in recent years. These models approximate continuous systems using a set of basis functions and discretize them to handle input data, making them well-suited…

机器学习 · 计算机科学 2024-07-16 Jiaxi Hu , Disen Lan , Ziyu Zhou , Qingsong Wen , Yuxuan Liang

In contemporary data-driven environments, the generation and processing of multivariate time series data is an omnipresent challenge, often complicated by time delays between different time series. These delays, originating from a multitude…

机器学习 · 计算机科学 2024-08-26 Jiajie Wang , Zhiyuan Jerry Lin , Wen Chen