The SKOS spec says: "The SKOS data model is formally defined in this specification as an OWL Full ontology”
However, OWL Full is an OWL 1 term and OWL 2 Direct Semantics added meta-modelling aka punning. So, if an OWL 1 Full ontology only had a “problem” that OWL 2 punning handles then, I think that OWL 1 Full ontology fits into the OWL 2 DS profile. I’ve not looked at or thought about any of this in detail until this reply, so take this with a grain of salt - but I *think* the specific example is handled by punning: ex:everest rdf:type ex:himalayas rdf:type skos:Concept rdf:type owl:Class I’ve not tested that with any tools, just looks ok via an eye test compared to the spec text example [1]: :x rdf:type :Eagle rdf:type :Species rdf:type owl:Class Anyway, in general I think that SKOS and OWL 2 *may* live together OK if your specific use of SKOS Concept, broader, etc. results in cases of *only* OWL 2 meta-modelling (i.e. no other structure appears that is beyond OWL 2 Direct Semantics). However, there are imaginable cases where that’s not the case - SKOS lets you violate OWL 2 DS with no complaints. Finally, WRT “is it really an issue” no matter what the specs say => that depends entirely on how you are using SKOS and the characteristics of your tools. If your scenario requires the use of a DL reasoner and SKOS causes that reason any problems, then yes … it is an issue. If you’re not using a DL reasoner or that reasoner behaves as expected even with SKOS in the scope, then perhaps not an issue. Cheers, David [1] https://www.w3.org/TR/2012/REC-owl2-new-features-20121211/#Simple_metamodeling_capabilities > On 8 Oct 2019, at 16:31, 'Bohms, H.M. (Michel)' via TopBraid Suite Users > <[email protected]> wrote: > > > In: > https://www.w3.org/2006/07/SWD/SKOS/skos-and-owl/master.html > <https://www.w3.org/2006/07/SWD/SKOS/skos-and-owl/master.html> > > its is said: > “ > To illustrate these patterns, let's start with the following semi-formal > conceptualisation: > ex:mountains rdf:type skos:Concept; > skos:prefLabel "Mountains"@en. > > ex:himalayas rdf:type skos:Concept; > skos:prefLabel "Himalayas"@en; > skos:broader ex:mountains. > > ex:everest rdf:type skos:Concept; > skos:prefLabel "Everest"@en; > skos:broader ex:himalayas. > Overlay SKOS with OWL > In this pattern, we use OWL to overlay additional semantics on the same > vocabulary, e.g. by adding the following triples: > ex:mountains rdf:type owl:Class. > > ex:himalayas rdf:type owl:Class; > rdfs:subClassOf ex:mountains. > > ex:everest rdf:type ex:himalayas. > If the two sets of triples are merged, then this pattern necessarily leads to > an OWL Full representation, because an instance of skos:Concept might also be > an instance of owl:Class. > > “ > > Is the red statement really true? And if yes, is it really an issue here? > > (maybe it was under owl1 but under owl2 not different?) > > thx for advice, Michel > > > > > Dr. ir. H.M. (Michel) Böhms > Senior Data Scientist > > T +31888663107 > M +31630381220 > E [email protected] <mailto:[email protected]> > Location > <https://www.google.com/maps/place/TNO+-+Locatie+Delft+-+Stieltjesweg/@52.000788,4.3745183,17z/data=!3m1!4b1!4m5!3m4!1s0x47c5b58c52869997:0x56681566be3b8c88!8m2!3d52.000788!4d4.376707> > > > <image001.gif> <http://www.tno.nl/> > This message may contain information that is not intended for you. If you are > not the addressee or if this message was sent to you by mistake, you are > requested to inform the sender and delete the message. TNO accepts no > liability for the content of this e-mail, for the manner in which you use it > and for damage of any kind resulting from the risks inherent to the > electronic transmission of messages. > > > > > > -- > You received this message because you are subscribed to the Google Groups > "TopBraid Suite Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/topbraid-users/ac5da3c76b474016b3e542741e5b4650%40tno.nl > > <https://groups.google.com/d/msgid/topbraid-users/ac5da3c76b474016b3e542741e5b4650%40tno.nl?utm_medium=email&utm_source=footer>. UK +44 (0) 7788 561308 US +1 (336) 283-0808 -- You received this message because you are subscribed to the Google Groups "TopBraid Suite Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/topbraid-users/7EDC6BB6-421E-4734-AE50-50409FD8DD05%40topquadrant.com.
