arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2402.16539cs.IRcs.CLcs.LG
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将大语言模型与基于图会话的推荐系统相结合

Integrating Large Language Models with Graphical Session-Based Recommendation

MYbank, Ant Group(蚂蚁集团 MYbank)

Naicheng Guo, Hongwei Cheng, Qianqiao Liang, Linxun Chen, Bing Han

AI总结:

本文提出LLMGR框架,通过提示调优将大语言模型与图神经网络融合用于会话推荐,利用二者互补优势理解用户交互,并在三个真实数据集上验证其优于多个基线。

摘要:

随着大语言模型(LLMs)的快速发展,利用LLMs的上下文理解能力进行推荐系统的各种探索已经出现。尽管开创性策略主要将传统推荐任务转化为自然语言生成的挑战,但由于会话推荐(SBR)的特殊性,该领域的探索相对稀缺。SBR主要由图神经网络(GNNs)主导,由于它们能够捕捉相邻行为之间的隐式和显式关系,已经取得了许多成功的结果。图的结构性质与自然语言的本质形成对比,给LLMs带来了显著的适应差距。在本文中,我们提出了将大语言模型与基于图会话的推荐系统相结合的框架,命名为LLMGR,这是一个有效的框架,通过将LLMs与图神经网络(GNNs)和谐地集成用于SBR任务,弥合了上述差距。这种集成旨在利用LLMs在自然语言理解方面的互补优势以及GNNs在关系数据处理方面的优势,从而形成一个更强大的基于会话的推荐系统,能够理解并推荐会话中的项目。此外,为了赋予LLM增强SBR任务的能力,我们为辅助和主要指令调优任务设计了一系列提示。这些提示旨在帮助LLM理解图结构数据,并将文本信息与节点对齐,有效地将细微的用户交互转化为LLM架构可以理解和利用的格式。在三个真实世界数据集上的大量实验表明,LLMGR优于多个竞争基线,表明其在增强SBR任务方面的有效性及其作为未来探索研究方向的潜力。

英文摘要:

With the rapid development of Large Language Models (LLMs), various explorations have arisen to utilize LLMs capability of context understanding on recommender systems. While pioneering strategies have primarily transformed traditional recommendation tasks into challenges of natural language generation, there has been a relative scarcity of exploration in the domain of session-based recommendation (SBR) due to its specificity. SBR has been primarily dominated by Graph Neural Networks, which have achieved many successful outcomes due to their ability to capture both the implicit and explicit relationships between adjacent behaviors. The structural nature of graphs contrasts with the essence of natural language, posing a significant adaptation gap for LLMs. In this paper, we introduce large language models with graphical Session-Based recommendation, named LLMGR, an effective framework that bridges the aforementioned gap by harmoniously integrating LLMs with Graph Neural Networks (GNNs) for SBR tasks. This integration seeks to leverage the complementary strengths of LLMs in natural language understanding and GNNs in relational data processing, leading to a more powerful session-based recommender system that can understand and recommend items within a session. Moreover, to endow the LLM with the capability to empower SBR tasks, we design a series of prompts for both auxiliary and major instruction tuning tasks. These prompts are crafted to assist the LLM in understanding graph-structured data and align textual information with nodes, effectively translating nuanced user interactions into a format that can be understood and utilized by LLM architectures. Extensive experiments on three real-world datasets demonstrate that LLMGR outperforms several competitive baselines, indicating its effectiveness in enhancing SBR tasks and its potential as a research direction for future exploration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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