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arXiv 2407.05033cs.IR
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协同用户提示用于个性化生成推荐

Collaborative User Prompt for Personalized Generative Recommendation

University College London(伦敦大学学院)

Jerome Ramos, Bin Wu, Aldo Lipani

AI总结:

本文提出一种整合个体与集体偏好的人工智能框架,通过注意力机制融合相似兴趣用户的嵌入表示,提升推荐系统的个性化与协同性。

摘要:

大型语言模型(LLMs)已成为生成推荐系统强大的基础,将推荐任务框架为文本生成任务。然而,现有生成推荐方法常依赖离散ID提示或任务特定软提示,忽略了具有相似兴趣的用户之间共享的有价值协同信号。为解决这一限制,本文提出一种组合框架,整合用户的个人偏好与相似用户的集体偏好以构建个性化软提示。具体而言,基于注意力机制融合相似兴趣用户的嵌入表示,生成更丰富的表示,捕捉用户偏好的多个方面。该设计动态强调共享兴趣同时保留个体用户偏好。在三个真实世界数据集上的实验表明,所提出方法在序列推荐、top-n推荐和解释生成任务中均表现出有效性,凸显了通过基于注意力的组合策略整合协同信号的优势。

英文摘要:

Large Language Models (LLMs) have become powerful foundations for generative recommender systems, framing recommendation tasks as text generation tasks. However, existing generative recommendation methods often rely on discrete ID-based prompts or task-specific soft prompts, which overlook the valuable collaborative signals shared among users with similar interests. To address this limitation, this paper presents a compositional framework that integrates a user's individual preferences with collective preferences from similar users to build personalized soft prompts. Specifically, an attention-based mechanism fuses embeddings from users with similar interests, creating a richer representation that captures multiple facets of user preferences. This design dynamically emphasizes shared interests while preserving individual user preferences. Experiments on three real-world datasets demonstrate the effectiveness of the proposed approach across sequential recommendation, top-n recommendation, and explanation generation tasks, underscoring the advantages of incorporating collaborative signals through an attention-based compositional strategy.

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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