A Hybrid Approach for Paper Recommendation

Ying KANG  Aiqin HOU  Zimin ZHAO  Daguang GAN  

IEICE TRANSACTIONS on Information and Systems   Vol.E104-D   No.8   pp.1222-1231
Publication Date: 2021/08/01
Publicized: 2021/04/26
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2020BDP0008
Type of Manuscript: Special Section PAPER (Special Section on Computational Intelligence and Big Data for Scientific and Technological Resources and Services)
paper recommendation,  citation graph,  hybrid model,  

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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.