arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.06215cs.LGcs.AI
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跨领域和跨系统推荐的深度框架

A Deep Framework for Cross-Domain and Cross-System Recommendations

Macquarie University(麦考瑞大学);Ant Financial Services Group(蚂蚁集团)

Feng Zhu, Yan Wang, Chaochao Chen, Guanfeng Liu, Mehmet Orgun, Jia Wu

摘要:

跨域推荐(CDR)和跨系统推荐(CSR)是解决推荐系统中长期存在的数据稀疏问题的两个有前途的解决方案。他们利用相对丰富的信息,例如,评级,以提高目标域或系统中的推荐准确性。因此,找到跨领域或系统的潜在因素的准确映射对于提高推荐准确性至关重要。然而,这是一个非常具有挑战性的任务,因为源和目标域或系统的潜在因素之间的复杂关系。为此,在本文中,我们提出了一个基于矩阵分解(MF)模型和完全连接的深度神经网络(DNN)的跨域和跨系统推荐的深度框架,称为DCDCSR。具体而言,DCDCSR首先采用MF模型来生成用户和项目潜在因素,然后采用DNN来映射跨域或系统的潜在因素。更重要的是,我们考虑了不同领域或系统中单个用户和项目的评级稀疏度,并使用它们来指导DNN训练过程,以便更有效地利用评级数据。在三个真实数据集上进行的大量实验表明,DCDCSR框架在推荐准确性方面优于最先进的CDR和CSR方法。

英文摘要:

Cross-Domain Recommendation (CDR) and Cross-System Recommendations (CSR) are two of the promising solutions to address the long-standing data sparsity problem in recommender systems. They leverage the relatively richer information, e.g., ratings, from the source domain or system to improve the recommendation accuracy in the target domain or system. Therefore, finding an accurate mapping of the latent factors across domains or systems is crucial to enhancing recommendation accuracy. However, this is a very challenging task because of the complex relationships between the latent factors of the source and target domains or systems. To this end, in this paper, we propose a Deep framework for both Cross-Domain and Cross-System Recommendations, called DCDCSR, based on Matrix Factorization (MF) models and a fully connected Deep Neural Network (DNN). Specifically, DCDCSR first employs the MF models to generate user and item latent factors and then employs the DNN to map the latent factors across domains or systems. More importantly, we take into account the rating sparsity degrees of individual users and items in different domains or systems and use them to guide the DNN training process for utilizing the rating data more effectively. Extensive experiments conducted on three real-world datasets demonstrate that DCDCSR framework outperforms the state-of-the-art CDR and CSR approaches in terms of recommendation accuracy.

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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