Research Paper Recommendation Using Citation Proximity Analysis in Bibliographic Coupling

Abstract

The immense proliferation of research papers in journals and conferences poses challenges for researchers wanting to access relevant scholarly papers. Recommender systems o er a solution to this research problem by ltering all of the available information and delivering what is most relevant to the user. Several approaches have been proposed for research paper recommendation, variously based on metadata, content, citation analysis, collaborative ltering, etc. Approaches predicated on citation analysis, including co-citation analysis and bibliographic coupling, have proven to be signi cant. Co-citation has been analyzed at content level and the use of citation proximity analysis has shown signi cant improvement in accuracy. However, co-citation presents the relationship between two papers based on their having been mutually cited by other papers, without considering the contents of the citing papers. Bibliographic coupling, on the other hand, considers two papers as relevant if they share common references, but traditionally does not consider the citing patterns of common references in di erent logical parts of the citing papers. The improvement found in cases of co-citation when combined with content analysis, motivated us to analyze the impact of using proximity analysis of in-text citations in cases of bibliographic coupling. Therefore, in this research, three different approaches were proposed that extended bibliographic coupling by exploiting the proximity of in-text citations of bibliographically coupled articles. These approaches are: (1) DBSCAN-based bibliographic coupling, (2) centiles-based bibliographic coupling and (3) section-based bibliographic coupling. Comprehensive experiments utilizing both user study and automated evaluations were conducted to evaluate the proposed approaches. The results showed signi cant improvement over traditional bibliographic coupling and content-based research paper recommendation