Journal
IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS
Volume E104D, Issue 8, Pages 1222-1231Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATION ENGINEERS
DOI: 10.1587/transinf.2020BDP0008
Keywords
paper recommendation; citation graph; hybrid model
Funding
- National Key Research and Development Plan of China [2017YFB1400301]
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This paper explored paper recommendation methods in public digital libraries and proposed a hybrid recommendation model that combines citations and content to achieve more accurate recommendations. By using a graphical form of citation relations and the concept of citation similarity, the proposed hybrid method outperforms state-of-the-art techniques and achieves 40% higher recommendation accuracy on average compared to citation-based approaches.
Paper recommendation has become an increasingly important yet challenging task due to the rapidly expanding volume and scope of publications in the broad research community. Due to the lack of user profiles in public digital libraries, most existing methods for paper recommendation are through paper similarity measurements based on citations or contents, and still suffer from various performance issues. In this paper, we construct a graphical form of citation relations to identify relevant papers and design a hybrid recommendation model that combines both citation-and content-based approaches to measure paper similarities. Considering that citations at different locations in one article are likely of different significance, we define a concept of citation similarity with varying weights according to the sections of citations. We evaluate the performance of our recommendation method using Spearman correlation on real publication data from public digital libraries such as CiteSeer and Wanfang. Extensive experimental results show that the proposed hybrid method exhibits better performance than state-of-the-art techniques, and achieves 40% higher recommendation accuracy in average in comparison with citation-based approaches.
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