%0 Conference Paper %1 medelyan2008integrating %A Medelyan, O. %A Legg, C. %B Proceedings of the WIKI-AI: Wikipedia and AI Workshop at the AAAI %D 2008 %K cyc ol_web2.0 tag_concept_mapping data_wikis %T Integrating Cyc and Wikipedia: Folksonomy meets rigorously defined common-sense %U http://scholar.google.de/scholar.bib?q=info:hgFpsjJR__4J:scholar.google.com/&output=citation&hl=de&as_sdt=2000&ct=citation&cd=58 %V 8 %X Integration of ontologies begins with establishing mappings between their concept entries. We map categories from the largest manually-built ontology, Cyc, onto Wikipedia articles describing corresponding concepts. Our method draws both on Wikipedia’s rich but chaotic hyperlink structure and Cyc’s carefully defined taxonomic and common-sense knowledge. On 9,333 manual alignments by one person, we achieve an F-measure of 90%; on 100 alignments by six human subjects the average agreement of the method with the subject is close to their agreement with each other. We cover 62.8% of Cyc categories relating to common-sense knowledge and discuss what further information might be added to Cyc given this substantial new alignment.