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Active learning for LLM-based recommender systems

delete2026-08-01
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PRE
AI
M
Meng, Haifeng
H
Huiting Liu *
Z
Zhao, Peng
W
Wu, Xindong
DOI:10.1007/s10844-026-01048-5delete
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摘要

摘要

En 中文
在大型语言模型(LLMs)快速发展的背景下,推荐系统正经历着变革性的转变。传统推荐方法难以深入捕捉用户意图,并在数据稀疏场景下表现出有限的泛化能力。GPT-4和LLaMA等LLMs因其丰富的世界知识和强大的推理能力,已吸引越来越多研究者探索其在推荐任务中的应用。然而,由于自然语言处理与个性化推荐之间存在显著差异,LLMs无法直接应用于推荐场景。尽管指令微调和参数高效微调等技术在一定程度上缓解了这一问题,但仍面临样本利用效率低和资源消耗高等挑战。为解决这些问题,本文提出了一种面向LLM推荐系统的主动学习框架ALLRec。该方法基于LLMs推理阶段生成的损失值评估训练样本的信息量,动态选择关键样本以提高训练效率。此外,我们设计了一个与主LLMs解耦的多样性学习模块,通过捕捉样本间的结构和语义差异来增强所选样本在数据分布中的多样性。在可控资源约束下,ALLRec通过联合建模信息量和多样性有效识别高价值样本。实验结果表明,ALLRec显著加速了模型收敛并提升了多个基准数据集上的推荐性能,验证了其在LLM推荐系统中的潜力。
Keyword:
Active learning
LLM-based recommender systems
Diversity
Training efficiency

期刊

J
Journal of Intelligent Information Systems
IF:
3.4
论文数:
78
被引数:
0

机构

H
Hefei University of Technology
学者数:
6.2K
论文数: 2.0K
被引数: 2.1W
A
anhui university
学者数:
1.9W
论文数: 1.2W
被引数: 24
引用论文

引用论文

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