Take the essence and discard the dross: A Rethinking on Data Selection for Fine-Tuning Large Language Models

• URL: http://arxiv.org/abs/2406.14115v1
• Date: Thu, 20 Jun 2024 08:58:58 GMT
• Title: Take the essence and discard the dross: A Rethinking on Data Selection for Fine-Tuning Large Language Models
• Authors: Ziche Liu, Rui Ke, Feng Jiang, Haizhou Li,
• Abstract summary: We propose a three-stage scheme for data selection and review existing works according to this scheme. We find that the more targeted method with data-specific and model-specific quality labels has higher efficiency.
• Score: 38.39395973523944
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Data selection for fine-tuning Large Language Models (LLMs) aims to select a high-quality subset from a given candidate dataset to train a Pending Fine-tune Model (PFM) into a Selective-Enhanced Model (SEM). It can improve the model performance and accelerate the training process. Although a few surveys have investigated related works of data selection, there is a lack of comprehensive comparison between existing methods due to their various experimental settings. To address this issue, we first propose a three-stage scheme for data selection and comprehensively review existing works according to this scheme. Then, we design a unified comparing method with ratio-based efficiency indicators and ranking-based feasibility indicators to overcome the difficulty of comparing various models with diverse experimental settings. After an in-depth comparative analysis, we find that the more targeted method with data-specific and model-specific quality labels has higher efficiency, but the introduction of additional noise information should be avoided when designing selection algorithms. Finally, we summarize the trends in data selection and highlight the short-term and long-term challenges to guide future research.

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