- From: Timothy Lebo <lebot@rpi.edu>
- Date: Tue, 12 Feb 2013 09:59:38 -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 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 15:00:13 UTC