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The self-attention mechanism in Transformer architecture, invariant to sequence order, necessitates positional embeddings to encode temporal order in time series prediction. We argue that this reliance on positional embeddings restricts the…

机器学习 · 计算机科学 2024-08-21 Yongbo Yu , Weizhong Yu , Feiping Nie , Xuelong Li

Time series forecasting plays a vital role across scientific, industrial, and environmental domains, especially when dealing with high-dimensional and nonlinear systems. While Transformer-based models have recently achieved state-of-the-art…

机器学习 · 计算机科学 2025-08-05 Ali Forootani , Mohammad Khosravi , Masoud Barati

It has been challenging to model the complex temporal-spatial dependencies between agents for trajectory prediction. As each state of an agent is closely related to the states of adjacent time steps, capturing the local temporal dependency…

计算机视觉与模式识别 · 计算机科学 2025-07-08 Yixin Yan , Yang Li , Yuanfan Wang , Xiaozhou Zhou , Beihao Xia , Manjiang Hu , Hongmao Qin

There is a recent trend in the LiDAR perception field towards unifying multiple tasks in a single strong network with improved performance, as opposed to using separate networks for each task. In this paper, we introduce a new LiDAR…

计算机视觉与模式识别 · 计算机科学 2024-03-05 Zixiang Zhou , Dongqiangzi Ye , Weijia Chen , Yufei Xie , Yu Wang , Panqu Wang , Hassan Foroosh

The challenge of effectively learning inter-series correlations for multivariate time series forecasting remains a substantial and unresolved problem. Traditional deep learning models, which are largely dependent on the Transformer paradigm…

机器学习 · 计算机科学 2024-05-29 Wanlin Cai , Kun Wang , Hao Wu , Xiaoxu Chen , Yuankai Wu

Passenger demand forecasting helps optimize vehicle scheduling, thereby improving urban efficiency. Recently, attention-based methods have been used to adequately capture the dynamic nature of spatio-temporal data. However, existing methods…

人工智能 · 计算机科学 2025-06-06 Haichen Wang , Liu Yang , Xinyuan Zhang , Haomin Yu , Ming Li , Jilin Hu

We propose the time-delayed transformer (TD-TF), a simplified transformer architecture for data-driven modeling of unsteady spatio-temporal dynamics. TD-TF bridges linear operator-based methods and deep sequence models by showing that a…

机器学习 · 计算机科学 2026-02-10 Albert Alcalde , Markus Widhalm , Emre Yılmaz

To analyze multivariate time series, most previous methods assume regular subsampling of time series, where the interval between adjacent measurements and the number of samples remain unchanged. Practically, data collection systems could…

机器学习 · 计算机科学 2023-10-18 Yuxi Wei , Juntong Peng , Tong He , Chenxin Xu , Jian Zhang , Shirui Pan , Siheng Chen

Graph Transformers have garnered significant attention for learning graph-structured data, thanks to their superb ability to capture long-range dependencies among nodes. However, the quadratic space and time complexity hinders the…

信息检索 · 计算机科学 2024-05-08 Huiyuan Chen , Zhe Xu , Chin-Chia Michael Yeh , Vivian Lai , Yan Zheng , Minghua Xu , Hanghang Tong

Transformer-based time series foundation models face a fundamental trade-off in choice of tokenization: point-wise embeddings preserve temporal fidelity but scale poorly with sequence length, whereas fixed-length patching improves…

Accurate traffic flow prediction is essential for applications like transport logistics but remains challenging due to complex spatio-temporal correlations and non-linear traffic patterns. Existing methods often model spatial and temporal…

机器学习 · 计算机科学 2025-03-18 Jing Chen , Haocheng Ye , Zhian Ying , Yuntao Sun , Wenqiang Xu

Multivariate time series classification is a crucial task in data mining, attracting growing research interest due to its broad applications. While many existing methods focus on discovering discriminative patterns in time series,…

机器学习 · 计算机科学 2024-12-24 Wenjie Xi , Rundong Zuo , Alejandro Alvarez , Jie Zhang , Byron Choi , Jessica Lin

Reliable uncertainty quantification is critical in multivariate time series forecasting problems arising in domains such as energy systems and transportation networks, among many others. Although Transformer-based architectures have…

机器学习 · 计算机科学 2026-03-13 Rajdeep Pathak , Rahul Goswami , Madhurima Panja , Palash Ghosh , Tanujit Chakraborty

Recent lightweight MLP-based models have achieved strong performance in time series forecasting by capturing stable trends and seasonal patterns. However, their effectiveness hinges on an implicit assumption of local stationarity…

机器学习 · 计算机科学 2026-01-29 Zhiyu Chen , Minhao Liu , Yanru Zhang

Multi-agent trajectory prediction is a fundamental problem in autonomous driving. The key challenges in prediction are accurately anticipating the behavior of surrounding agents and understanding the scene context. To address these…

计算机视觉与模式识别 · 计算机科学 2022-03-04 Elmira Amirloo , Amir Rasouli , Peter Lakner , Mohsen Rohani , Jun Luo

Visual place recognition is a challenging task in the field of computer vision, and autonomous robotics and vehicles, which aims to identify a location or a place from visual inputs. Contemporary methods in visual place recognition employ…

计算机视觉与模式识别 · 计算机科学 2024-05-29 Shyam Sundar Kannan , Byung-Cheol Min

Time-series data are critical in diverse applications, such as industrial monitoring, medical diagnostics, and climate research. However, effectively integrating these high-dimensional temporal signals with natural language for dynamic,…

计算与语言 · 计算机科学 2025-06-26 Yilin Wang , Peixuan Lei , Jie Song , Yuzhe Hao , Tao Chen , Yuxuan Zhang , Lei Jia , Yuanxiang Li , Zhongyu Wei

The challenging task of multi-object tracking (MOT) requires simultaneous reasoning about track initialization, identity, and spatio-temporal trajectories. We formulate this task as a frame-to-frame set prediction problem and introduce…

计算机视觉与模式识别 · 计算机科学 2022-05-02 Tim Meinhardt , Alexander Kirillov , Laura Leal-Taixe , Christoph Feichtenhofer

Long-term Time Series Forecasting (LTSF) is critical for numerous real-world applications, such as electricity consumption planning, financial forecasting, and disease propagation analysis. LTSF requires capturing long-range dependencies…

机器学习 · 计算机科学 2024-10-04 Aitian Ma , Dongsheng Luo , Mo Sha

Recent advancements in transformer-based models have greatly improved time series analysis, providing robust solutions for tasks such as forecasting, anomaly detection, and classification. A crucial element of these models is positional…

机器学习 · 计算机科学 2026-05-07 Habib Irani , Vangelis Metsis