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2007

Node similarity in the citation graph

8 years 11 months ago
Node similarity in the citation graph
Published scientific articles are linked together into a graph, the citation graph, through their citations. This paper explores the notion of similarity based on connectivity alone, and proposes several algorithms to quantify it. Our metrics take advantage of the local neighborhoods of the nodes in the citation graph. Two variants of link-based similarity estimation between two nodes are described, one based on the separate local neighborhoods of the nodes, and another based on the joint local neighborhood expanded from both nodes at the same time. The algorithms are implemented and evaluated on a subgraph of the citation graph of computer science in a retrieval context. The results are compared with text-based similarity, and demonstrate the complementarity of link-based and text-based retrieval. Keywords Networked information spaces · Document similarity metric · Citation graph · Digital libraries
Wangzhong Lu, Jeannette C. M. Janssen, Evangelos E
Added 16 Dec 2010
Updated 16 Dec 2010
Type Journal
Year 2007
Where KAIS
Authors Wangzhong Lu, Jeannette C. M. Janssen, Evangelos E. Milios, Nathalie Japkowicz, Yongzheng Zhang
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