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Article type: Research Article
Authors: Dentler, Kathrin; ; | Cornet, Ronald | ten Teije, Annette | de Keizer, Nicolette
Affiliations: Department of Medical Informatics, Academic Medical Center, University of Amsterdam, The Netherlands | Department of Computer Science, Vrije Universiteit Amsterdam, The Netherlands
Note: [] Corresponding author. E-mail: [email protected].
Abstract: This paper provides a survey to and a comparison of state-of-the-art Semantic Web reasoners that succeed in classifying large ontologies expressed in the tractable OWL 2 EL profile. Reasoners are characterized along several dimensions: The first dimension comprises underlying reasoning characteristics, such as the employed reasoning method and its correctness as well as the expressivity and worst-case computational complexity of its supported language and whether the reasoner supports incremental classification, rules, justifications for inconsistent concepts and ABox reasoning tasks. The second dimension is practical usability: whether the reasoner implements the OWL API and can be used via OWLlink, whether it is available as Protégé plugin, on which platforms it runs, whether its source is open or closed and which license it comes with. The last dimension contains performance indicators that can be evaluated empirically, such as classification, concept satisfiability, subsumption checking and consistency checking performance as well as required heap space and practical correctness, which is determined by comparing the computed concept hierarchies with each other. For the very large ontology SNOMED CT, which is released both in stated and inferred form, we test whether the computed concept hierarchies are correct by comparing them to the inferred form of the official distribution. The reasoners are categorized along the defined characteristics and benchmarked against well-known biomedical ontologies. The main conclusion from this study is that reasoners vary significantly with regard to all included characteristics, and therefore a critical assessment and evaluation of requirements is needed before selecting a reasoner for a real-life application.
Keywords: Semantic Web, DL reasoners, OWL 2 EL, biomedical ontologies, SNOMED CT
DOI: 10.3233/SW-2011-0034
Journal: Semantic Web, vol. 2, no. 2, pp. 71-87, 2011
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