A Survey of the Web Ontology Landscape

  • Taowei David Wang
  • Bijan Parsia
  • James Hendler
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4273)


We survey nearly 1300 OWL ontologies and RDFS schemas. The collection of statistical data allows us to perform analysis and report some trends. Though most of the documents are syntactically OWL Full, very few stay in OWL Full when they are syntactically patched by adding type triples. We also report the frequency of occurrences of OWL language constructs and the shape of class hierarchies in the ontologies. Finally, we note that of the largest ontologies surveyed here, most do not exceed the description logic expressivity of \(\mathcal{ALC}\).


Directed Acyclic Graph Class Hierarchy Datatype Property Description Logic Expressivity Tractable Fragment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Taowei David Wang
    • 1
  • Bijan Parsia
    • 2
  • James Hendler
    • 1
  1. 1.Department of Computer ScienceUniversity of MarylandCollege ParkUSA
  2. 2.The University of ManchesterUK

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