文章基本信息

标题：RECOMMENDATION ALGORITHM BASED ON TIME CONTEXT AND TAG OPTIMIZATION
本地全文：下载
作者：ZHANG KAI ; LI FEI DA ; ZHANG XU QIAN 等
期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2020
卷号：98
期号：4
页码：684-691
出版社：Journal of Theoretical and Applied
摘要：At present, some progress has been made in the research of context-based recommendation algorithm and label-based recommendation algorithm. However, there are some problems such as sparse scoring data for items by users and low precision of recommendation results. In response to the above problems, this paper proposes a recommendation algorithm that integrates time context and tag optimization. The recommendation algorithm is improved by integrating user behavior time interval and user attribute label information. Firstly, Long Short-Term Memory (LSTM) is introduced to study the effect of time interval on tags. Then, each output layer is combined with Latent Dirichlet Allocation (LDA) to weigh the tags with high importance. Finally, the prediction value is obtained by fusing the scoring information. Experiments show that the new algorithm has effectively alleviated the problem of sparse scoring data and improves the precision of recommendation results.
关键词：recommender system;time context;tags;Long Short-Term Memory;topic model；Scoring Matrix