Empowering Time Series Forecasting with LLM-Agents

• URL: http://arxiv.org/abs/2508.04231v1
• Date: Wed, 06 Aug 2025 09:14:08 GMT
• Title: Empowering Time Series Forecasting with LLM-Agents
• Authors: Chin-Chia Michael Yeh, Vivian Lai, Uday Singh Saini, Xiran Fan, Yujie Fan, Junpeng Wang, Xin Dai, Yan Zheng,
• Abstract summary: We propose DCATS, a Data-Centric Agent for Time Series.<n>We evaluate DCATS using four time series forecasting models on a large-scale traffic volume forecasting dataset.
• Score: 23.937463131291974
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large Language Model (LLM) powered agents have emerged as effective planners for Automated Machine Learning (AutoML) systems. While most existing AutoML approaches focus on automating feature engineering and model architecture search, recent studies in time series forecasting suggest that lightweight models can often achieve state-of-the-art performance. This observation led us to explore improving data quality, rather than model architecture, as a potentially fruitful direction for AutoML on time series data. We propose DCATS, a Data-Centric Agent for Time Series. DCATS leverages metadata accompanying time series to clean data while optimizing forecasting performance. We evaluated DCATS using four time series forecasting models on a large-scale traffic volume forecasting dataset. Results demonstrate that DCATS achieves an average 6% error reduction across all tested models and time horizons, highlighting the potential of data-centric approaches in AutoML for time series forecasting.

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