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2016 | OriginalPaper | Chapter

Categorization Power of Ontologies with Respect to Focus Classes

Authors : Vojtěch Svátek, Ondřej Zamazal, Miroslav Vacura

Published in: Knowledge Engineering and Knowledge Management

Publisher: Springer International Publishing

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Abstract

When reusing existing ontologies, preference might be given to those providing extensive subcategorization for the classes deemed important in the new ontology (focus classes). The reused set of categories may not only consist of named classes but also of some compound concept expressions that could be viewed as meaningful categories by human ontologist. We define the general notion of focused ontologistic categorization power; for the sake of tractable experiments we then choose a restricted concept expression language and map it to syntactic axiom patterns. The occurrence of the patterns has been verified in two ontology collections, and for a sample of pattern instances their ontologistic status has been assessed by different groups of users.

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previous chapter Detecting Meaningful Compounds in Complex Class Labels

next chapter Selecting Optimal Background Knowledge Sources for the Ontology Matching Task

http://lov.okfn.org/.

http://www.w3.org/TR/owl2-manchester-syntax/.

From now on simply ‘axiom pattern’, for simplicity.

We denote these specific patterns using normal font, to differentiate with the superscript notation (\(p_i\)) of abstract symbols in Sect. 2.

For simplicity we omit O in the formula; the identity of the ontology follows from the FC it contains. We also avoid the use of DL notation and express the OWL axioms using predicate URIs, to avoid collision with general math notation. The only reference to beyond-RDFS construct is the value restriction for p5.

The restriction can also be inherited from a superclass or part of a complete definition, or can have the form of a value or self restriction or of a cardinality restriction that specializes the existential one; analogously for other \(prun_n\)’s below.

http://owl.vse.cz:8080/ontofarm/.

http://lov.okfn.org/.

http://oaei.ontologymatching.org/.

http://owl.vse.cz:8080/OOSP/.

More detail can be found, again, at http://owl.vse.cz:8080/EKAW2016/.

The questionnaire was in Czech. Its English translation is available from the paper web page http://owl.vse.cz:8080/EKAW2016/.

Most namespace prefixes used can be expanded using the prefix.cc service. Prefixes unlisted by this service follow: p-act=http://purl.org/procurement/public-contracts-activities#, p-aut=http://purl.org/procurement/public-contracts-authority-kinds#, p1=http://www.loc.gov/premis/rdf/v1, p1-sm=http://id.loc.gov/vocabulary/preservation/storageMedium#, sigkdd=http://oaei.ontologymatching.org/2016/conference/data/sigkdd.owl.

http://wiki.dbpedia.org/services-resources/ontology.

This work has been published separately as a demo paper [10]. The demo paper only contains a minimalist informal explanation of the notions of FC, CE and OC; apart from that the content of the demo paper is disjoint with the current submission.

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10.

Zamazal, O., Svátek, V.: Ontology search by categorization power. In: Workshop SumPre 2016 at ESWC (2016)

Title: Categorization Power of Ontologies with Respect to Focus Classes
Authors: Vojtěch Svátek
Ondřej Zamazal
Miroslav Vacura
Publisher: Springer International Publishing
Book: Knowledge Engineering and Knowledge Management
Print ISBN: 978-3-319-49003-8

Electronic ISBN: 978-3-319-49004-5

Copyright Year: 2016
DOI: https://doi.org/10.1007/978-3-319-49004-5_41

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