An empirical study of instance-based ontology matching

author: Stefan Schlobach, Vrije Universiteit Amsterdam (VU)
published: Feb. 1, 2008,   recorded: November 2007,   views: 3895

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Instance-based ontology mapping is a promising family of solutions to a class of ontology alignment problems. It crucially depends on measuring the similarity between sets of annotated instances. In this paper we study how the choice of co-occurrence measures affects the performance of instance-based mapping. To this end, we have implemented a number of different statistical cooccurrence measures. We have prepared an extensive test case using vocabularies of thousands of terms, millions of instances, and hundreds of thousands of co-annotated items. We have obtained a human Gold Standard judgement for part of the mapping-space. We then study how the different co-occurrence measures and a number of algorithmic variations perform on our benchmark dataset as compared against the Gold Standard. Our systematic study shows excellent results of instance-based match- ing in general, where the more simple measures often outperform more sophisticated statistical co-occurrence measures.

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