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Issue No.06 - November/December (2009 vol.15)
pp: 1153-1160
Jian Zhang , Drexel University
Chaomei Chen , Drexel University
Jiexun Li , Drexel University
ABSTRACT
Visualizing the intellectual structure of scientific domains using co-cited units such as references or authors has become a routine for domain analysis. In previous studies, paper-reference matrices are usually transformed into reference-reference matrices to obtain co-citation relationships, which are then visualized in different representations, typically as node-link networks, to represent the intellectual structures of scientific domains. Such network visualizations sometimes contain tightly knit components, which make visual analysis of the intellectual structure a challenging task. In this study, we propose a new approach to reveal co-citation relationships. Instead of using a reference-reference matrix, we directly use the original paper-reference matrix as the information source, and transform the paper-reference matrix into an FP-tree and visualize it in a Java-based prototype system. We demonstrate the usefulness of our approach through visual analyses of the intellectual structure of two domains: Information Visualization and Sloan Digital Sky Survey (SDSS). The results show that our visualization not only retains the major information of co-citation relationships, but also reveals more detailed sub-structures of tightly knit clusters than a conventional node-link network visualization.
INDEX TERMS
Intellectual Structure, Paper-reference Matrix, FP-tree, Co-citation
CITATION
Jian Zhang, Chaomei Chen, Jiexun Li, "Visualizing the Intellectual Structure with Paper-Reference Matrices", IEEE Transactions on Visualization & Computer Graphics, vol.15, no. 6, pp. 1153-1160, November/December 2009, doi:10.1109/TVCG.2009.202
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