arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2507.03280cs.IR
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基于残差扩散的捆绑推荐中项目级动态变异建模

Modeling Item-Level Dynamic Variability with Residual Diffusion for Bundle Recommendation

Wuhan University of Technology(武汉理工大学);Wuhan Textile University(武汉纺织大学);York University(约克大学);University of Southern Queensland(南昆士兰大学)

Dong Zhang, Lin Li, Ming Li, Amran Bhuiyan, Meng Sun, Xiaohui Tao, Jimmy Xiangji Huang

AI总结:

本文提出RDiffBR模型,通过残差扩散方法提升捆绑推荐中项目级动态变异适应能力,使Recall和NDCG指标提升达23%。

摘要:

现有的捆绑推荐(BR)解决方案在预测预构建捆绑的用户偏好方面取得了显著成效。然而,在现实场景中,捆绑-项目(B-I)关联会动态变化。例如,一个主题为“休闲装”的捆绑可能因季节变化、用户偏好变化或库存调整而添加“帽子”或移除“手表”。我们的实证研究表明,主流BR模型在项目级变异情况下性能可能波动或下降。本文首次尝试解决上述问题,提出了一种新颖的残差扩散用于捆绑推荐(RDiffBR)模型,该模型具有模型无关的生成框架,可帮助BR模型适应此类场景。在BR模型的初始训练中,RDiffBR采用残差扩散模型处理由BR模型生成的项目级捆绑嵌入,这些嵌入通过正反向过程表示捆绑主题。在推理阶段,RDiffBR在B-I变异场景下反转由良好训练的捆绑模型获得的项目级捆绑嵌入,以生成有效的项目级捆绑嵌入。特别地,我们残差近似器中的残差连接显著增强了BR模型生成高质量项目级捆绑嵌入的能力。在六个BR模型和四个来自不同领域的公开数据集上的实验表明,RDiffBR将Recall和NDCG指标的性能提升高达23%,而仅增加训练时间约4%。

英文摘要:

Existing solutions for bundle recommendation (BR) have achieved remarkable effectiveness for predicting the user's preference for prebuilt bundles. However, bundle-item (B-I) affiliation will vary dynamically in real scenarios. For example, a bundle themed as 'casual outfit' may add 'hat' or remove 'watch' due to factors such as seasonal variations, changes in user preferences or inventory adjustments. Our empirical study demonstrates that the performance of mainstream BR models may fluctuate or decline under item-level variability. This paper makes the first attempt to address the above problem and proposes a novel Residual Diffusion for Bundle Recommendation(RDiffBR)asamodel-agnostic generative framework which can assist a BR model in adapting this scenario. During the initial training of the BR model, RDiffBR employs a residual diffusion model to process the item-level bundle embeddings which are generated by the BR model to represent bundle theme via a forward-reverse process. In the inference stage, RDiffBR reverses item-level bundle embeddings obtained by the well-trained bundle model under B-I variability scenarios to generate the effective item level bundle embeddings. In particular, the residual connection in our residual approximator significantly enhances BR models' ability to generate high-quality item-level bundle embeddings. Experiments on six BR models and four public datasets from different domains show that RDiffBR improves the performance of Recall and NDCG of backbone BR models by up to 23%, while only increases training time about 4%.

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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