Selecting hierarchical clustering cut points for web person-name disambiguation

  • Authors:
  • Jun Gong;Douglas W. Oard

  • Affiliations:
  • Department of Information System Beihang University , Beijing, China;College of Information Studies/UMIACS University of Maryland, College Park, MD, USA

  • Venue:
  • Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval
  • Year:
  • 2009

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Abstract

Hierarchical clustering is often used to cluster person-names referring to the same entities. Since the correct number of clusters for a given person-name is not known a priori, some way of deciding where to cut the resulting dendrogram to balance risks of over- or under-clustering is needed. This paper reports on experiments in which outcome-specific and result-set measures are used to learn a global similarity threshold. Results on the Web People Search (WePS)-2 task indicate that approximately 85% of the optimal F1 measure can be achieved on held-out data.