OWL Relational statements in OWL Recipe for Failure

OWL Relational statements in OWL Recipe for Failure ?

Naïve, semantic network style approach to relations Concept C 1 Examples Hepatitis Hand Aspirin Relation R has. Location has. Part treats Concept C 2 Liver Thumb Headache

OWL-DL approach to relations: requires quantification some only =1 Concept C 1 Examples Hepatitis Hand Aspirin Relation R has. Location has. Part treats Concept C 2 Liver Thumb Headache

OWL-DL approach to relations: requires quantification some only =1 Concept C 1 Relation R Concept C 2 Examples Hepatitis sub. Class. Of has. Location some Liver Hand has. Part Thumb Aspirin treats Headache

OWL-DL approach to relations: requires quantification some only =1 Concept C 1 Relation R Concept C 2 Examples Hepatitis sub. Class. Of has. Location some Liver Hand sub. Class. Of has. Part some Thumb Aspirin treats Headache

OWL-DL approach to relations: requires quantification some only =1 Concept C 1 Relation R Concept C 2 Examples Hepatitis sub. Class. Of has. Location some Liver Hand sub. Class. Of has. Part some Thumb Aspirin sub. Class. Of treats some Headache

OWL-DL approach to relations: requires quantification some only =1 Concept C 1 Relation R Concept C 2 Examples Hepatitis sub. Class. Of has. Location some Liver Hand sub. Class. Of has. Part some Thumb Aspirin sub. Class. Of treats some Headache Hand sub. Class. Of has. Part only Thumb

OWL-DL approach to relations: requires quantification some only =1 Concept C 1 Relation R Concept C 2 Examples Hepatitis sub. Class. Of has. Location some Liver Hand sub. Class. Of has. Part some Thumb Aspirin sub. Class. Of treats some Headache Thumb sub. Class. Of part. Of some Hand

OWL-DL approach to relations: requires quantification some only =1 Concept C 1 Relation R Concept C 2 Examples Hepatitis sub. Class. Of has. Location some Liver Hand sub. Class. Of has. Part some Thumb Aspirin sub. Class. Of treats some Headache Aspirin sub. Class. Of treats only Headache

OWL-DL approach to relations: requires quantification some only =1 Concept C 1 Relation R Concept C 2 Examples Hepatitis sub. Class. Of has. Location some Liver Hand sub. Class. Of has. Part some Thumb Aspirin sub. Class. Of treats some Headache sub. Class. Of treated. By some Aspirin

OWL-DL approach to relations: requires quantification some only =1 Concept C 1 Relation R Concept C 2 Examples Hepatitis sub. Class. Of has. Location some Liver Hand sub. Class. Of has. Part some Thumb Aspirin sub. Class. Of treats some Headache sub. Class. Of treated. By only Aspirin

Typical errors Tonsillectomy planned Sub. Class. Of rg some (associated. Procedure some Tonsillectomy) and… Skin_Squamous_Cell_Carcinoma_in_situ Sub. Class. Of (disease. May. Have. Finding some Erythema) and… Congenital absence of bile duct Sub. Class. Of finding. Site some Bile. Duct. Structure … anti-Muellerian hormone isoform 1 unmodified form equivalent. To 'anti-Muellerian hormone isoform 1' and lacks_modification some 'post-translational protein modification' absent sub. Class. Of reciprocal_of some 'lacking processual parts'

Conclusion n The use of OWL requires a precise ontological commitment n n is a hand without a thumb still a hand n what about a severed thumb Many important statements cannot be adequately represented n OWL semantic enforces statements of the type „for all… some“ or „for all… only“ n No way to express what is mostly or normally true