arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.03450cs.IRcs.AI
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基于用户活动中心的社会影响力兴趣点推荐

Leveraging Social Influence based on Users Activity Centers for Point-of-Interest Recommendation

University of Zanjan(赞詹大学);University College London(伦敦大学学院);University of Amsterdam(阿姆斯特丹大学)

Kosar Seyedhoseinzadeh, Hossein A. Rahmani, Mohsen Afsharchi, Mohammad Aliannejadi

摘要:

推荐系统(RS)的目标是在与项目(如兴趣点(POI))交互时对用户偏好进行建模和预测。这些系统面临着一些挑战,例如数据稀疏性,限制了它们的有效性。在本文中,我们解决这个问题,将社会,地理和时间信息的矩阵分解(MF)技术。为此,我们基于两个因素对社交影响力进行建模:用户之间在常见签到方面的相似性以及他们之间的友谊。我们介绍了两个层次的友谊的基础上明确的友谊网络和高检入用户之间的重叠。我们的友谊算法基于用户的地理活动中心。结果表明,我们提出的模型优于国家的最先进的两个现实世界的数据集。更具体地说,我们的消融研究表明,社交模型在Gowalla和Yelp数据集上分别将我们提出的POI推荐系统的性能提高了31%和14%。

英文摘要:

Recommender Systems (RSs) aim to model and predict the user preference while interacting with items, such as Points of Interest (POIs). These systems face several challenges, such as data sparsity, limiting their effectiveness. In this paper, we address this problem by incorporating social, geographical, and temporal information into the Matrix Factorization (MF) technique. To this end, we model social influence based on two factors: similarities between users in terms of common check-ins and the friendships between them. We introduce two levels of friendship based on explicit friendship networks and high check-in overlap between users. We base our friendship algorithm on users' geographical activity centers. The results show that our proposed model outperforms the state-of-the-art on two real-world datasets. More specifically, our ablation study shows that the social model improves the performance of our proposed POI recommendation system by 31% and 14% on the Gowalla and Yelp datasets in terms of Precision@10, respectively.

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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