Hi Jona, ---- Wł. Śr, 26 mar 2014 19:01:48 +0100 Jona Christopher Sahnwaldt<j...@sahnwaldt.de> napisał(a) ----
On Mar 25, 2014 12:31 AM, "apoh...@o2.pl" <apoh...@o2.pl> wrote: > > > > ---- Wł. Pn, 24 mar 2014 23:31:33 +0100 Jona Christopher Sahnwaldt<j...@sahnwaldt.de> napisał(a) ---- > >> On 24 March 2014 22:57, apoh...@o2.pl <apoh...@o2.pl> wrote: >> > Hi Jona, >> > >> > I just want to make one thing clear - if either domain or range has a >> > owl:Thing "constraint" you don't export that information to the dbpedia.owl? >> >> That's right. We could fix that with a bit of effort. >> >> When we build the (in-memory) ontology properties from the mappings >> wiki, we use the default value owl:Thing if there's no domain [1] or >> range [2]. That's necessary because domain and range must not be >> empty. But it also means we don't distinguish between missing values >> and explicit owl:Thing values. That's the root of the problem. >> > Well, but for data type property the returned value is None if the definition is absent. What do you mean by that? I ment this check [1], where None is returned. But I haven't checked what happens on higher level and this might actually lead to an omission of the property in the final OWL. Aleksander [1] https://github.com/dbpedia/extraction-framework/blob/master/core/src/main/scala/org/dbpedia/extraction/ontology/io/OntologyReader.scala#L175
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