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In the past few years, time series foundation models have achieved superior predicting accuracy. However, real-world time series often exhibit significant diversity in their temporal patterns across different time spans and domains, making…

机器学习 · 计算机科学 2026-03-19 Aobo Liang , Yan Sun , Xiaohou Shi , Ke Li

Long-term urban mobility predictions play a crucial role in the effective management of urban facilities and services. Conventionally, urban mobility data has been structured as spatiotemporal videos, treating longitude and latitude grids…

机器学习 · 计算机科学 2023-12-05 Jinguo Cheng , Ke Li , Yuxuan Liang , Lijun Sun , Junchi Yan , Yuankai Wu

Multivariate Time Series (MTS) forecasting involves modeling temporal dependencies within historical records. Transformers have demonstrated remarkable performance in MTS forecasting due to their capability to capture long-term…

机器学习 · 计算机科学 2024-07-17 Yifan Zhang , Rui Wu , Sergiu M. Dascalu , Frederick C. Harris

While transformers have shown great potential on video recognition with their strong capability of capturing long-range dependencies, they often suffer high computational costs induced by the self-attention to the huge number of 3D tokens.…

计算机视觉与模式识别 · 计算机科学 2022-11-23 Yuxuan Liang , Pan Zhou , Roger Zimmermann , Shuicheng Yan

Time series forecasting requires capturing patterns across multiple temporal scales while maintaining computational efficiency. This paper introduces AWGformer, a novel architecture that integrates adaptive wavelet decomposition with…

机器学习 · 计算机科学 2026-01-29 Wei Li

We propose the Taylorformer for random processes such as time series. Its two key components are: 1) the LocalTaylor wrapper which adapts Taylor approximations (used in dynamical systems) for use in neural network-based probabilistic…

机器学习 · 计算机科学 2024-09-24 Omer Nivron , Raghul Parthipan , Damon J. Wischik

A reliable and efficient representation of multivariate time series is crucial in various downstream machine learning tasks. In multivariate time series forecasting, each variable depends on its historical values and there are…

机器学习 · 计算机科学 2022-08-22 William T. Ng , K. Siu , Albert C. Cheung , Michael K. Ng

Currently, iTransformer is one of the most popular and effective models for multivariate time series (MTS) forecasting. Thanks to its inverted framework, iTransformer effectively captures multivariate correlation. However, the inverted…

机器学习 · 计算机科学 2025-07-17 Hongming Tan , Ting Chen , Ruochong Jin , Wai Kin Chan

Multivariate Time series forecasting is crucial in domains such as transportation, meteorology, and finance, especially for predicting extreme weather events. State-of-the-art methods predominantly rely on Transformer architectures, which…

机器学习 · 计算机科学 2024-10-16 Li Wu , Wenbin Pei , Jiulong Jiao , Qiang Zhang

In deep time series forecasting, the Fourier Transform (FT) is extensively employed for frequency representation learning. However, it often struggles in capturing multi-scale, time-sensitive patterns. Although the Wavelet Transform (WT)…

机器学习 · 计算机科学 2026-02-09 Ziyu Zhou , Jiaxi Hu , Qingsong Wen , James T. Kwok , Yuxuan Liang

Accurate traffic forecasting is essential for intelligent transportation systems, supporting a wide range of real-world applications. However, it remains challenging due to two key factors:~(1) Traffic series contain heterogeneous temporal…

人工智能 · 计算机科学 2026-05-26 Ruiwen Gu , Qitai Tan , Yahao Liu , Xiao-Ping Zhang

The Transformer and its variants have been proven to be efficient sequence learners in many different domains. Despite their staggering success, a critical issue has been the enormous number of parameters that must be trained (ranging from…

机器学习 · 计算机科学 2021-10-28 Subhabrata Dutta , Tanya Gautam , Soumen Chakrabarti , Tanmoy Chakraborty

Anomalies in multivariate time series often arise from temporal context and cross-channel coordination rather than isolated outliers. We present Pi-Transformer (Prior-Informed Transformer), a transformer with two attention pathways:…

机器学习 · 计算机科学 2026-03-20 Sepehr Maleki , Negar Pourmoazemi

To the naked eye, stock prices are considered chaotic, dynamic, and unpredictable. Indeed, it is one of the most difficult forecasting tasks that hundreds of millions of retail traders and professional traders around the world try to do…

计算金融 · 定量金融 2025-02-17 Shuozhe Li , Zachery B Schulwol , Risto Miikkulainen

When solving forecasting problems including multiple time-series features, existing approaches often fall into two extreme categories, depending on whether to utilize inter-feature information: univariate and complete-multivariate models.…

人工智能 · 计算机科学 2024-08-20 Jaehoon Lee , Hankook Lee , Sungik Choi , Sungjun Cho , Moontae Lee

Transformer-based models have gained large popularity and demonstrated promising results in long-term time-series forecasting in recent years. In addition to learning attention in time domain, recent works also explore learning attention in…

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

Recurrent neural networks are effective models to process sequences. However, they are unable to learn long-term dependencies because of their inherent sequential nature. As a solution, Vaswani et al. introduced the Transformer, a model…

机器学习 · 计算机科学 2023-03-28 Quentin Fournier , Gaétan Marceau Caron , Daniel Aloise

Time series forecasting is an important yet challenging task. Though deep learning methods have recently been developed to give superior forecasting results, it is crucial to improve the interpretability of time series models. Previous…

机器学习 · 计算机科学 2020-12-18 Qingyi Pan , Wenbo Hu , Jun Zhu

For the task of speech separation, previous study usually treats multi-channel and single-channel scenarios as two research tracks with specialized solutions developed respectively. Instead, we propose a simple and unified architecture -…

声音 · 计算机科学 2023-03-15 Shuo Wang , Xiangyu Kong , Xiulian Peng , Mahmood Movassagh , Vinod Prakash , Yan Lu