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arXiv 2404.12975cs.IRcs.AI
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FineRec:探索细粒度序列推荐

FineRec:Exploring Fine-grained Sequential Recommendation

Dalian University of Technology(大连理工大学);Pennsylvania State University(宾夕法尼亚州立大学)

Xiaokun Zhang, Bo Xu, Youlin Wu, Yuan Zhong, Hongfei Lin, Fenglong Ma

AI总结:

FineRec利用评论中的属性-观点对,通过大型语言模型提取并构建属性特定图,采用多样性感知卷积和交互驱动融合,实现细粒度序列推荐,在多个真实数据集上优于现有方法。

摘要:

序列推荐致力于基于用户的历史行为为用户提供感兴趣的项目。用户在项目评论中表达的属性-观点对,为在细粒度层面捕捉用户偏好和项目特征提供了潜力。为此,我们提出了一个新框架FineRec,该框架探索评论中的属性-观点对,以精细地处理序列推荐。具体来说,我们利用大型语言模型从评论中提取属性-观点对。对于每个属性,创建一个独特的属性特定的用户-观点-项目图,其中相应的观点作为连接异构用户和项目节点的边。为了解决观点的多样性,我们设计了一种多样性感知的卷积操作来聚合图内的信息,从而实现属性特定的用户和项目表示学习。最终,我们提出了一种交互驱动的融合机制,将所有属性的属性特定用户/项目表示整合起来以生成推荐。在多个真实世界数据集上进行的大量实验证明了我们的FineRec相对于现有最先进方法的优越性。进一步的分析也验证了我们的细粒度方式在处理该任务中的有效性。

英文摘要:

Sequential recommendation is dedicated to offering items of interest for users based on their history behaviors. The attribute-opinion pairs, expressed by users in their reviews for items, provide the potentials to capture user preferences and item characteristics at a fine-grained level. To this end, we propose a novel framework FineRec that explores the attribute-opinion pairs of reviews to finely handle sequential recommendation. Specifically, we utilize a large language model to extract attribute-opinion pairs from reviews. For each attribute, a unique attribute-specific user-opinion-item graph is created, where corresponding opinions serve as the edges linking heterogeneous user and item nodes. To tackle the diversity of opinions, we devise a diversity-aware convolution operation to aggregate information within the graphs, enabling attribute-specific user and item representation learning. Ultimately, we present an interaction-driven fusion mechanism to integrate attribute-specific user/item representations across all attributes for generating recommendations. Extensive experiments conducted on several realworld datasets demonstrate the superiority of our FineRec over existing state-of-the-art methods. Further analysis also verifies the effectiveness of our fine-grained manner in handling the task.

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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