CLUES: Collaborative High-Quality Data Selection for LLMs via Training Dynamics

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Hauptverfasser: Zhao, Wanru, Fan, Hongxiang, Hu, Shell Xu, Zhou, Wangchunshu, Chen, Bofan, Lane, Nicholas D.
Format: Preprint
Veröffentlicht: 2025
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author Zhao, Wanru
Fan, Hongxiang
Hu, Shell Xu
Zhou, Wangchunshu
Chen, Bofan
Lane, Nicholas D.
author_facet Zhao, Wanru
Fan, Hongxiang
Hu, Shell Xu
Zhou, Wangchunshu
Chen, Bofan
Lane, Nicholas D.
contents Recent research has highlighted the importance of data quality in scaling large language models (LLMs). However, automated data quality control faces unique challenges in collaborative settings where sharing is not allowed directly between data silos. To tackle this issue, this paper proposes a novel data quality control technique based on the notion of data influence on the training dynamics of LLMs, that high quality data are more likely to have similar training dynamics to the anchor dataset. We then leverage the influence of the training dynamics to select high-quality data from different private domains, with centralized model updates on the server side in a collaborative training fashion by either model merging or federated learning. As for the data quality indicator, we compute the per-sample gradients with respect to the private data and the anchor dataset, and use the trace of the accumulated inner products as a measurement of data quality. In addition, we develop a quality control evaluation tailored for collaborative settings with heterogeneous domain data. Experiments show that training on the high-quality data selected by our method can often outperform other data selection methods for collaborative fine-tuning of LLMs, across diverse private domain datasets, in medical, multilingual and financial settings. Our code is released at github.com/Ryan0v0/CLUES.
format Preprint
id arxiv_https___arxiv_org_abs_2507_03004
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle CLUES: Collaborative High-Quality Data Selection for LLMs via Training Dynamics
Zhao, Wanru
Fan, Hongxiang
Hu, Shell Xu
Zhou, Wangchunshu
Chen, Bofan
Lane, Nicholas D.
Computation and Language
Multiagent Systems
Recent research has highlighted the importance of data quality in scaling large language models (LLMs). However, automated data quality control faces unique challenges in collaborative settings where sharing is not allowed directly between data silos. To tackle this issue, this paper proposes a novel data quality control technique based on the notion of data influence on the training dynamics of LLMs, that high quality data are more likely to have similar training dynamics to the anchor dataset. We then leverage the influence of the training dynamics to select high-quality data from different private domains, with centralized model updates on the server side in a collaborative training fashion by either model merging or federated learning. As for the data quality indicator, we compute the per-sample gradients with respect to the private data and the anchor dataset, and use the trace of the accumulated inner products as a measurement of data quality. In addition, we develop a quality control evaluation tailored for collaborative settings with heterogeneous domain data. Experiments show that training on the high-quality data selected by our method can often outperform other data selection methods for collaborative fine-tuning of LLMs, across diverse private domain datasets, in medical, multilingual and financial settings. Our code is released at github.com/Ryan0v0/CLUES.
title CLUES: Collaborative High-Quality Data Selection for LLMs via Training Dynamics
topic Computation and Language
Multiagent Systems
url https://arxiv.org/abs/2507.03004