A federated large language model for long-term time series forecasting

• URL: http://arxiv.org/abs/2407.20503v1
• Date: Tue, 30 Jul 2024 02:38:27 GMT
• Title: A federated large language model for long-term time series forecasting
• Authors: Raed Abdel-Sater, A. Ben Hamza,
• Abstract summary: We propose FedTime, a federated large language model (LLM) tailored for long-range time series prediction. We employ K-means clustering to partition edge devices or clients into distinct clusters. We also incorporate channel independence and patching to better preserve local semantic information.
• Score: 4.696083734269233
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: 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) tailored for long-range time series prediction. Specifically, we introduce a federated pre-trained LLM with fine-tuning and alignment strategies. Prior to the learning process, we employ K-means clustering to partition edge devices or clients into distinct clusters, thereby facilitating more focused model training. We also incorporate channel independence and patching to better preserve local semantic information, ensuring that important contextual details are retained while minimizing the risk of information loss. We demonstrate the effectiveness of our FedTime model through extensive experiments on various real-world forecasting benchmarks, showcasing substantial improvements over recent approaches. In addition, we demonstrate the efficiency of FedTime in streamlining resource usage, resulting in reduced communication overhead.

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