On 3/27/17 10:42 AM, Daniel Kinzler wrote: > Am 27.03.2017 um 15:13 schrieb Kingsley Idehen: >> I see Wikidata is a collection of reified RDF Statements. I don't see how >> this >> model differs from RDF's model. It just so happens (in my eyes) that Wikidata >> includes description of statements about things which provides rich >> metadata, in >> line with the goals of Wikidata. > It's a matter of perspective. > > I agree that Wikidata can be *represented* as a collection of reified RDF > Statements. That's what we do for the query service. But I do not agree that > this is what Wikidata *is*.
My point is that your model boils down to treating statements as "first class citizens" so to speak. If true, then it is as I described i.e., still an RDF model, but with emphasis of statement reification, which is actually a good thing. > > RDF and the Wikibase model are quite different conceptually. RDF doesn't exclude reification. Put differently, using reification doesn't amount to a new model different from that of RDF. > But they are of > equal power and thus formally equivalent: one can be represented using the > other. Just because a Turing Machine is computationally equivalent to lambda > calculus, that does not mean they are the same thing. I am not implying that. > Understanding one in terms > of the other may be helpful in some context, and irrelevant in another. > > There is nothing special about the relationship between Wikibase/Wikidata and > RDF; Wikibase has an RDF binding, but it is not defined in terms of RDF, its > specification does not rely on RDF concepts. RDF concepts boil down to the use of sentences to describe anything, just as we do everyday in the so-called real world. > The Wikibase model can just as well > (or perhaps more easily) be understood and represented in terms of the Topic > Maps model (ISO 13250). > > Academically, the Wikibase model could perhaps be described as an extended > model > logic with reasoning rules for provenance. I think W. Stelzner explored > related > ideas in the 80s. Maybe one day I'll find the time to dig into this some more. I think we can just agree to disagree for now, since nothing you've stated is fundamentally contrary to my view of RDF -- as a Language for describing anything (including statements) :) > > -- Regards, Kingsley Idehen Founder & CEO OpenLink Software (Home Page: http://www.openlinksw.com) Weblogs (Blogs): Legacy Blog: http://www.openlinksw.com/blog/~kidehen/ Blogspot Blog: http://kidehen.blogspot.com Medium Blog: https://medium.com/@kidehen Profile Pages: Pinterest: https://www.pinterest.com/kidehen/ Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen Twitter: https://twitter.com/kidehen Google+: https://plus.google.com/+KingsleyIdehen/about LinkedIn: http://www.linkedin.com/in/kidehen Web Identities (WebID): Personal: http://kingsley.idehen.net/dataspace/person/kidehen#this : http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
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