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    DMIR Research Group

    Publications by Andreas Hotho

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    Semantic Grounding of Tag Relatedness in Social Bookmarking Systems

    Cattuto, Ciro; Benz, Dominik; Hotho, Andreas; Stumme, Gerd in The Semantic Web - ISWC 2008 Volume   5318   von   Lecture Notes in Computer Science 5318 , Seite 615--631 . Springer Berlin / Heidelberg , 2008 .

    Collaborative tagging systems have nowadays become important data sources for populating semantic web applications. For tasks like synonym detection and discovery of concept hierarchies, many researchers introduced measures of tag similarity. Eventhough most of these measures appear very natural, their design often seems to be rather ad hoc, and the underlying assumptionson the notion of similarity are not made explicit. A more systematic characterization and validation of tag similarity interms of formal representations of knowledge is still lacking. Here we address this issue and analyze several measures oftag similarity: Each measure is computed on data from the social bookmarking system del.icio.us and a semantic grounding isprovided by mapping pairs of similar tags in the folksonomy to pairs of synsets in Wordnet, where we use validated measuresof semantic distance to characterize the semantic relation between the mapped tags. This exposes important features of theinvestigated similarity measures and indicates which ones are better suited in the context of a given semantic application.
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    DOIhttp://dx.doi.org/10.1007/978-3-540-88564-1_39
    Tags2008  award  folksonomy  for:dmir  grounding  iswc2008  myown  semantic  sw  tag  tagging  taggingsurvey  webzu 

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