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Attention-based architectures have become ubiquitous in time series forecasting tasks, including spatio-temporal (STF) and long-term time series forecasting (LTSF). Yet, our understanding of the reasons for their effectiveness remains…

机器学习 · 计算机科学 2025-05-13 Suhan Guo , Jiahong Deng , Yi Wei , Hui Dou , Furao Shen , Jian Zhao

Sufficiently modeling the correlations among variables (aka channels) is crucial for achieving accurate multivariate time series forecasting (MTSF). In this paper, we propose a novel technique called Temporal Query (TQ) to more effectively…

机器学习 · 计算机科学 2025-09-12 Shengsheng Lin , Haojun Chen , Haijie Wu , Chunyun Qiu , Weiwei Lin

Modern online large language model (LLM) services, such as Retrieval-Augmented Generation (RAG) and agent systems, increasingly expose two prominent characteristics: prompt segmentation (e.g., system instructions, retrieved passages, tool…

机器学习 · 计算机科学 2026-05-12 Xingyu Qu , Tianhao Lin , Yiqi Li , Zhiyu Chen , Sheng Wang

Network traffic prediction is essential for automating modern network management. It is a difficult time series forecasting (TSF) problem that has been addressed by Deep Learning (DL) models due to their ability to capture complex patterns.…

网络与互联网体系结构 · 计算机科学 2026-01-07 Eilaf MA Babai , Aalaa MA Babai , Koji Okamura

Most existing Time Series Foundation Models (TSFMs) use channel independent modeling and focus on capturing and generalizing temporal dependencies, while neglecting the correlations among channels or overlooking the different aspects of…

机器学习 · 计算机科学 2026-03-24 Hanyin Cheng , Xingjian Wu , Yang Shu , Zhongwen Rao , Lujia Pan , Bin Yang , Chenjuan Guo

Long-term time-series forecasting (LTSF) is fundamental to various real-world applications, where Transformer-based models have become the dominant framework due to their ability to capture long-range dependencies. However, these models…

机器学习 · 计算机科学 2025-03-27 Mingjie Li , Rui Liu , Guangsi Shi , Mingfei Han , Changling Li , Lina Yao , Xiaojun Chang , Ling Chen

Accurate, and effective traffic forecasting is vital for smart traffic systems, crucial in urban traffic planning and management. Current Spatio-Temporal Transformer models, despite their prediction capabilities, struggle with balancing…

机器学习 · 计算机科学 2026-01-29 Zhiqi Shao , Michael G. H. Bell , Ze Wang , D. Glenn Geers , Xusheng Yao , Junbin Gao

Spatiotemporal traffic data (e.g., link speed/flow) collected from sensor networks can be organized as multivariate time series with additional spatial attributes. A crucial task in analyzing such data is to identify and detect anomalous…

机器学习 · 计算机科学 2021-10-12 Xudong Wang , Luis Miranda-Moreno , Lijun Sun

Cloud-Native microservice architectures have become prevalent owing to their inherent flexibility and scalability properties. To satisfy service quality guarantees, cloud providers must implement efficient proactive autoscaling algorithms.…

分布式、并行与集群计算 · 计算机科学 2026-04-21 Zhichao Sun , Hailiang Zhao , Kingsum Chow

There has recently been growing interest in conversational agents with long-term memory which has led to the rapid development of language models that use retrieval-augmented generation (RAG). Until recently, most work on RAG has focused on…

计算与语言 · 计算机科学 2024-06-06 Nick Alonso , Tomás Figliolia , Anthony Ndirango , Beren Millidge

Time-series forecasting is a critical task across many domains, from engineering to economics, where accurate predictions drive strategic decisions. However, applying advanced deep learning models in challenging, volatile domains like…

机器学习 · 计算机科学 2026-02-23 Andrzej Podobiński , Jarosław A. Chudziak

Time series classification (TSC) aims to predict the class label of a given time series, which is critical to a rich set of application areas such as economics and medicine. State-of-the-art TSC methods have mostly focused on classification…

机器学习 · 计算机科学 2021-06-01 Nestor Cabello , Elham Naghizade , Jianzhong Qi , Lars Kulik

Retrieval-Augmented Generation (RAG) enhances Large Language Models (LLMs) by integrating them with an external knowledge base to improve the answer relevance and accuracy. In real-world scenarios, beyond pure text, a substantial amount of…

计算与语言 · 计算机科学 2025-10-07 Jiaru Zou , Dongqi Fu , Sirui Chen , Xinrui He , Zihao Li , Yada Zhu , Jiawei Han , Jingrui He

A Content-based Time Series Retrieval (CTSR) system is an information retrieval system for users to interact with time series emerged from multiple domains, such as finance, healthcare, and manufacturing. For example, users seeking to learn…

Forecasting urban delivery demand becomes substantially more challenging when newly added service regions lack historical records. Existing spatiotemporal forecasters effectively model spatial dependence once sufficient node histories are…

机器学习 · 计算机科学 2026-05-20 Yihong Tang , Tong Nie , Junlin He , Qianjun Huang , Dingyi Zhuang , Lijun Sun

Data augmentation (DA) has become a de facto solution to expand training data size for deep learning. With the proliferation of deep models for time series analysis, various time series DA techniques are proposed in the literature, e.g.,…

机器学习 · 计算机科学 2023-02-21 Muxi Chen , Zhijian Xu , Ailing Zeng , Qiang Xu

Traffic flow forecasting is considered a critical task in the field of intelligent transportation systems. In this paper, to address the issue of low accuracy in long-term forecasting of spatial-temporal big data on traffic flow, we propose…

机器学习 · 计算机科学 2024-07-17 Baichao Long , Wang Zhu , Jianli Xiao

Optimal decision-making in social settings is often based on forecasts from time series (TS) data. Recently, several approaches using deep neural networks (DNNs) such as recurrent neural networks (RNNs) have been introduced for TS…

机器学习 · 计算机科学 2020-11-17 Philippe Chatigny , Jean-Marc Patenaude , Shengrui Wang

Reservoir computing (RC) establishes the basis for the processing of time-series data by exploiting the high-dimensional spatiotemporal response of a recurrent neural network to an input signal. In particular, RC trains only the output…

机器学习 · 计算机科学 2025-10-17 Hayato Nihei , Sou Nobukawa , Yusuke Sakemi , Kazuyuki Aihara

In quantitative finance, the gap between training and real-world performance-driven by concept drift and distributional non-stationarity-remains a critical obstacle for building reliable data-driven systems. Models trained on static…

人工智能 · 计算机科学 2026-01-16 Haochong Xia , Yao Long Teng , Regan Tan , Molei Qin , Xinrun Wang , Bo An