arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.14018cs.IRcs.LG
收藏

GLIMG:Top-N推荐系统的全局和局部项目图

GLIMG: Global and Local Item Graphs for Top-N Recommender Systems

Nanyang Technological University(南洋理工大学);Chongqing University(重庆大学);RIKEN Center for Advanced Intelligence Project(理化学研究所先进智能项目中心);Singapore Institute of Manufacturing Technology(新加坡制造技术研究院)

Zhuoyi Lin, Lei Feng, Rui Yin, Chi Xu, Chee-Keong Kwoh

摘要:

基于图的推荐模型对于top-N推荐系统工作得很好,因为它们能够捕捉实体之间的潜在关系。然而,现有的方法大多只构建了一个单一的全局项目图的所有用户共享和遗憾的是,忽略了不同的用户组之间的不同口味。受局部推荐模型成功的启发,本文首次尝试研究多个局部项图以及基于图的推荐模型的全局项图。我们认为,全球和局部图上的推荐优于一个单一的全球图或多个局部图。具体来说,我们提出了一种新的基于图的推荐模型名为GLIMG(全球和本地IteM图),它同时捕捉全球和本地用户的口味。通过将全局图和局部图集成到自适应半监督学习模型中,用户对项目的偏好在全局和局部传播。在真实数据集上的大量实验结果表明,我们提出的方法在前N个推荐任务上始终优于最先进的同行。

英文摘要:

Graph-based recommendation models work well for top-N recommender systems due to their capability to capture the potential relationships between entities. However, most of the existing methods only construct a single global item graph shared by all the users and regrettably ignore the diverse tastes between different user groups. Inspired by the success of local models for recommendation, this paper provides the first attempt to investigate multiple local item graphs along with a global item graph for graph-based recommendation models. We argue that recommendation on global and local graphs outperforms that on a single global graph or multiple local graphs. Specifically, we propose a novel graph-based recommendation model named GLIMG (Global and Local IteM Graphs), which simultaneously captures both the global and local user tastes. By integrating the global and local graphs into an adapted semi-supervised learning model, users' preferences on items are propagated globally and locally. Extensive experimental results on real-world datasets show that our proposed method consistently outperforms the state-of-the art counterparts on the top-N recommendation 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。

↑