- From: Timothy Lebo <lebot@rpi.edu>
- Date: Tue, 12 Feb 2013 10:26:14 -0500
- To: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
- Cc: "public-prov-wg@w3.org" <public-prov-wg@w3.org>
On Feb 12, 2013, at 10:09 AM, Luc Moreau <L.Moreau@ecs.soton.ac.uk> wrote: > If we do, and convert back to rdf, we don't have an equivalent rdf representation. Yes, you would :-) -Tim > > Professor Luc Moreau > Electronics and Computer Science > University of Southampton > Southampton SO17 1BJ > United Kingdom > > On 12 Feb 2013, at 15:00, "Timothy Lebo" <lebot@rpi.edu> wrote: > >> >> On Feb 12, 2013, at 9:57 AM, Luc Moreau <L.Moreau@ecs.soton.ac.uk> wrote: >> >>> Dm/XML/prov-n require an explicit identifier which we don't have in this example. >> >> Why not make one up? >> >> -TIm >> >>> >>> Professor Luc Moreau >>> Electronics and Computer Science >>> University of Southampton >>> Southampton SO17 1BJ >>> United Kingdom >>> >>> On 12 Feb 2013, at 14:54, "Timothy Lebo" <lebot@rpi.edu> wrote: >>> >>>> Luc, >>>> >>>> On Feb 12, 2013, at 9:25 AM, Luc Moreau <L.Moreau@ecs.soton.ac.uk> wrote: >>>>>>> >>>>>>> >>>>>>> The prov-o document has several examples with blank nodes. >>>>>>> Some of them are difficult >>>>>>> to express in prov-n/prov-xml. >>>>>>> >>>>>>> Consider: >>>>>>> https://dvcs.w3.org/hg/prov/file/5495d990f17b/testcases/provo/prov-o-property-hadUsage-PASS.ttl >>>>>>> >>>>>>> The usage has no identifier we can use in the derivation. >>>>>> >>>>>> Any identifier will do; you may choose a new one for each bnode you find. >>>>>> >>>>>> >>>>>>> Should we keep examples of this kind in the specification or should we introduce an explicit >>>>>>> identifier for usage here? >>>>>> We are using blank nodes to help the reader focus on the structure of the PROV-O pattern. >>>>>> I think this is appropriate for the audience of PROV-O. >>>>>> >>>>>> Perhaps it's just a matter of knowing how to handle bnodes when mapping to other serializations? >>>>> >>>>> We don't specify that. So, we don't how express that example in prov-xml/prov-n. >>>> >>>> In XML, it'd be an element with no @id attribute (since, that's exactly what a blank node is). >>>> I haven't written any translators to XML or N, so I guess I don't understand the problem clearly enough. >>>> What is difficult about "filling something in" if it's not there? >>>> This is exactly the correct interpretation of a bnode. >>>> >>>> Regards, >>>> Tim >>>> >>>> >>>> >>> >> >> >
Received on Tuesday, 12 February 2013 15:26:45 UTC