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Subject: RE: [xdi] Groups - XDI RDF v8 Comments-Barnhill (pdf) (XDI RDF v8 Comments-Barnhill.pdf) uploaded
Just to be clear, the “n-segment”
syntax was deprecated in the V9 XDI RDF Model document (http://wiki.oasis-open.org/xdi/XdiRdfModel)
due to the problems identified in this thread. To be precise, it was unclear
whether s1 p1 o1 p2 o2 meant that s1/p1/o1 was the subject of p2/o2
or not. It was also unclear how cross-reference syntax would be applied. We solved both problems by eliminating “n-segment”
syntax in the V9 document. Now it should be unambiguous that if you want to
express that s1/p1/o1 is the subject of p2/o2, you say: (s1/p1/o1)/p2/o2 What did remain is the // syntax for
subcontexts, which allows you to solve the RDF “blank node problem”
by providing an address for a blank node. That address is simply // (which fits
very nicely from a conceptual standpoint since the identifier for that segment
is “blank”). So if I want to say that the object of s1/p1
is a blank node, I can write it as s1/p1// . This creates a new XDI context in
which I can express another set of XDI statements whose XRIs are unique in this
context. We’ll go over the practical uses for
this on the call tomorrow – agenda coming out shortly. =Drummond From:
markus.sabadello@gmail.com [mailto:markus.sabadello@gmail.com] On Behalf Of Markus Sabadello
On Tue, Mar 11, 2008 at 4:29 PM, Giovanni Bartolomeo <giovanni.bartolomeo@uniroma2.it>
wrote: Dear Bill, All, The document named XDI RDF v8 Comments-Barnhill (pdf) (XDI RDF v8
Comments-Barnhill.pdf) has been submitted by Mr. William Barnhill to the OASIS
XRI Data Interchange (XDI) TC document repository. Document Description: View
Document Details: http://www.oasis-open.org/apps/org/workgroup/xdi/document.php?document_id=27112
Download Document: http://www.oasis-open.org/apps/org/workgroup/xdi/download.php/27112/XDI%20RDF%20v8%20Comments-Barnhill.pdf
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