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Large Language Models (LLMs) have emerged as a promising paradigm for time series analytics, leveraging their massive parameters and the shared sequential nature of textual and time series data. However, a cross-modality gap exists between…

Machine Learning · Computer Science 2025-07-16 Chenxi Liu , Hao Miao , Cheng Long , Yan Zhao , Ziyue Li , Panos Kalnis

Large language models (LLMs) have achieved remarkable success across various domains, but effectively incorporating complex and potentially noisy user timeline data into LLMs remains a challenge. Current approaches often involve translating…

Computation and Language · Computer Science 2024-09-11 Lin Ning , Luyang Liu , Jiaxing Wu , Neo Wu , Devora Berlowitz , Sushant Prakash , Bradley Green , Shawn O'Banion , Jun Xie

This paper presents a comparative analysis evaluating the accuracy of Large Language Models (LLMs) against traditional macro time series forecasting approaches. In recent times, LLMs have surged in popularity for forecasting due to their…

Econometrics · Economics 2025-09-25 Andrea Carriero , Davide Pettenuzzo , Shubhranshu Shekhar

Multivariate time series forecasting (MTSF) aims to learn temporal dynamics among variables to forecast future time series. Existing statistical and deep learning-based methods suffer from limited learnable parameters and small-scale…

Machine Learning · Computer Science 2025-04-01 Chenxi Liu , Qianxiong Xu , Hao Miao , Sun Yang , Lingzheng Zhang , Cheng Long , Ziyue Li , Rui Zhao

While large language models (LLMs) demonstrate impressive capabilities across numerous applications, their robustness remains a critical concern. This paper is motivated by a specific vulnerability: the order sensitivity of LLMs. This…

Machine Learning · Computer Science 2025-05-22 Beni Egressy , Jan Stühmer

Long-term time series forecasting in centralized environments poses unique challenges regarding data privacy, communication overhead, and scalability. To address these challenges, we propose FedTime, a federated large language model (LLM)…

Machine Learning · Computer Science 2024-07-31 Raed Abdel-Sater , A. Ben Hamza

Given the significant potential of large language models (LLMs) in sequence modeling, emerging studies have begun applying them to time-series forecasting. Despite notable progress, existing methods still face two critical challenges: 1)…

Artificial Intelligence · Computer Science 2025-01-09 Pengfei Wang , Huanran Zheng , Qi'ao Xu , Silong Dai , Yiqiao Wang , Wenjing Yue , Wei Zhu , Tianwen Qian , Xiaoling Wang

Accurate load forecasting is crucial for maintaining the power balance between generators and consumers,particularly with the increasing integration of renewable energy sources, which introduce significant intermittent volatility. With the…

Systems and Control · Electrical Eng. & Systems 2024-09-04 Mingyang Gao , Suyang Zhou , Wei Gu , Zhi Wu , Haiquan Liu , Aihua Zhou

Time series (TS) data are ubiquitous across various application areas, rendering time series forecasting (TSF) a fundamental task. With the astounding advances in large language models (LLMs), a variety of methods have been developed to…

Artificial Intelligence · Computer Science 2025-08-25 Zhuomin Chen , Dan Li , Jiahui Zhou , Shunyu Wu , Haozheng Ye , Jian Lou , See-Kiong Ng

While Large Language Models (LLMs) have exhibited remarkable emergent capabilities through extensive pre-training, they still face critical limitations in generalizing to specialized domains and handling diverse linguistic variations, known…

Computation and Language · Computer Science 2025-05-28 Jinwu Hu , Zhitian Zhang , Guohao Chen , Xutao Wen , Chao Shuai , Wei Luo , Bin Xiao , Yuanqing Li , Mingkui Tan

Large language models (LLMs) are being applied to time series forecasting. But are language models actually useful for time series? In a series of ablation studies on three recent and popular LLM-based time series forecasting methods, we…

Machine Learning · Computer Science 2024-10-29 Mingtian Tan , Mike A. Merrill , Vinayak Gupta , Tim Althoff , Thomas Hartvigsen

Sequential Recommender Systems (SRS), which model a user's interaction history to predict the next item of interest, are widely used in various applications. However, existing SRS often struggle with low-popularity items, a challenge known…

Information Retrieval · Computer Science 2024-12-24 Qidong Liu , Xian Wu , Wanyu Wang , Yejing Wang , Yuanshao Zhu , Xiangyu Zhao , Feng Tian , Yefeng Zheng

Understanding time series is crucial for its application in real-world scenarios. Recently, large language models (LLMs) have been increasingly applied to time series tasks, leveraging their strong language capabilities to enhance various…

Artificial Intelligence · Computer Science 2026-01-06 Zhe Xie , Zeyan Li , Xiao He , Longlong Xu , Xidao Wen , Tieying Zhang , Jianjun Chen , Rui Shi , Dan Pei

Time series classification plays a fundamental role in a wide range of real-world applications. Recently, large language models (LLMs) have demonstrated strong generalization and reasoning capacities, but directly applying them to time…

Machine Learning · Computer Science 2025-12-22 Xiaoyu Tao , Tingyue Pan , Mingyue Cheng , Yucong Luo , Qi Liu , Enhong Chen

Using pre-trained large language models (LLMs) as a backbone for time series prediction has recently attracted growing research interest. Existing approaches typically split time series into patches, map them to the token space of LLMs via…

Machine Learning · Computer Science 2026-03-09 Xinyu Zhang , Shanshan Feng , Xutao Li , Kenghong Lin , Fan Li , Pengfei Jia

Modern time-series forecasting models often fail to make full use of rich unstructured information about the time series themselves. This lack of proper conditioning can lead to obvious model failures; for example, models may be unaware of…

Large Language Models (LLMs) have demonstrated effectiveness as zero-shot time series (TS) forecasters. The key challenge lies in tokenizing TS data into textual representations that align with LLMs' pre-trained knowledge. While existing…

Artificial Intelligence · Computer Science 2025-12-24 Xingyou Yin , Ceyao Zhang , Min Hu , Kai Chen

Time series data plays a critical role across diverse domains such as healthcare, energy, and finance, where tasks like classification, anomaly detection, and forecasting are essential for informed decision-making. Recently, large language…

Machine Learning · Computer Science 2024-12-18 Francis Tang , Ying Ding

Time series forecasting remains a challenging task, particularly in the context of complex multiscale temporal patterns. This study presents LLM-Mixer, a framework that improves forecasting accuracy through the combination of multiscale…

This work summarizes two ways to accomplish Time-Series (TS) tasks in today's Large Language Model (LLM) context: LLM-for-TS (model-centric) designs and trains a fundamental large model, or fine-tunes a pre-trained LLM for TS data;…

Computation and Language · Computer Science 2024-02-23 Chenxi Sun , Hongyan Li , Yaliang Li , Shenda Hong