Journal
JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY
Volume 63, Issue 1, Pages 78-85Publisher
WILEY
DOI: 10.1002/asi.21664
Keywords
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Funding
- New Energy and Industrial Technology Development Organization (NEDO) [09D47001a]
- Ministry of Education, Science, Sports and Culture (MEXT) [21700266]
- Grants-in-Aid for Scientific Research [21700266] Funding Source: KAKEN
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In this article, we build models to predict the existence of citations among papers by formulating link prediction for 5 large-scale datasets of citation networks. The supervised machine-learning model is applied with 11 features. As a result, our learner performs very well, with the F1 values of between 0.74 and 0.82. Three features in particular, link-based Jaccard coefficient, difference in betweenness centrality, and cosine similarity of term frequency-inverse document frequency vectors, largely affect the predictions of citations. The results also indicate that different models are required for different types of research areas-research fields with a single issue or research fields with multiple issues. In the case of research fields with multiple issues, there are barriers among research fields because our results indicate that papers tend to be cited in each research field locally. Therefore, one must consider the typology of targeted research areas when building models for link prediction in citation networks.
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