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Re: Liaison to W3C Provenance Working Group

From: Kai Eckert <kai@informatik.uni-mannheim.de>
Date: Tue, 04 Oct 2011 22:12:25 +0200
Message-ID: <4E8B68A9.4060103@informatik.uni-mannheim.de>
To: Richard Cyganiak <richard@cyganiak.de>
CC: Guus Schreiber <guus.schreiber@vu.nl>, Eric Stephan <ericphb@gmail.com>, public-rdf-prov@w3.org, public-prov-wg@w3.org
Thanks Richard, that is great news. I added the text to the informal
report [1].

I suggest that followups regarding this connection should now be sent
only to public-rdf-prov.




Am 04.10.2011 16:02, schrieb Richard Cyganiak:
> Hi Kai,
> On 27 Sep 2011, at 10:41, Kai Eckert wrote:
>> As you already said you would function as such a bridge person, if
>> noone else volunteers, it would be great if you could do it and
>> write a short description of the RDF WG, its goals, especially if
>> they are in the context of provenance.
> I have discussed this with the RDF-WG chairs, and gladly agree to act
> as a bridge person between Prov-WG and RDF-WG.
> A description of RDF-WG and its provenance-related activities, goals
> and materials is attached below. Feel free to use this for the
> Prov-WG report as you see fit.
> All the best, Richard
> -----
> RDF Working Group
> One of the work items on the RDF WG's charter [1] is to “Standardize
> a model and semantics for multiple graphs and graphs stores”. This is
> expected to unify approaches such as “named graphs”, “quoted graphs”,
> “graph literals”, “quads” and so on.
> These features are widely used in RDF deployments to model the
> provenance of information recorded in RDF. Indeed, the working
> group's collection of use cases for this “multigraphs support”
> identifies several provenance-related use cases [2]. The ability to
> address provenance-related use cases will be an important benchmark
> in evaluating proposals for this work item.
> At the time of writing, a straw-man proposal, directly based on the
> notion of “RDF datasets” in SPARQL, is included in the Editor's Draft
> of the updated RDF Concepts document [3]. Being an Editor's Draft, it
> is a work in progress and does not have consensus within the WG. The
> section also contains links into the RDF-WG issue tracker where
> relevant mailing list discussion is archived.
> The interest of the working group is limited to provenance of RDF
> data. Given the positioning of RDF as a web technology, the main
> focus is on provenance of RDF data on the web, but this is not
> exclusive as RDF is also used “behind the firewall” in enterprise
> information integration, knowledge representation and other
> scenarios.
> Relevant output of the working group is likely to include an
> extension of the RDF data model to support multiple RDF graphs, with
> an account of the formal semantics of the extension. To actually
> address provenance use cases, most likely additional RDF vocabulary
> will be required. The RDF WG is unlikely to standardize such
> vocabularies, as no new vocabularies are listed in its chartered
> deliverables, although addition of new terms to RDF Schema [4] would
> not be impossible given the charter. The RDF WG is more likely to
> defer the creation of such vocabulary to other or future working
> groups, most of all the W3C Provenance Working Group [5], but also
> the Government Linked Data WG [6] which has work items on describing
> best practices for versioning, and on recommending/blessing (or
> standardizing) a metadata vocabulary suitable for provenance.
> It is likely that the working group will also standardize a related
> syntax for multiple graphs, which may end up being similar to
> existing proposals such as TriG [7], Notation 3 [8] or N-Quads [9].
> Other syntaxes may be retrofitted with multigraph support.
> [1] http://www.w3.org/2011/01/rdf-wg-charter [2]
> http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs-UC#Provenance_Use_Cases
> [3]
> http://dvcs.w3.org/hg/rdf/raw-file/default/rdf-concepts/index.html#section-multigraph
[3] http://www.w3.org/TR/rdf-schema/
> [4] http://www.w3.org/2011/prov/ [5]
> http://www.w3.org/2011/gld/charter#deliverables [6]
> http://www4.wiwiss.fu-berlin.de/bizer/trig/ [7]
> http://www.w3.org/TeamSubmission/n3/ [8]
> http://sw.deri.org/2008/07/n-quads/
>> You can just send that to me and I will include it in the report.
>> There is already a small description in the wiki that you can
>> simply extend, if you like.
>> Cheers,
>> Kai
>> [1]
>> http://www.w3.org/2011/prov/wiki/Connection_Task_Force_Informal_Report#RDF_Working_Group_.28.2A.2A.29
Am 13.09.2011 05:18, schrieb Richard Cyganiak:
>>> Hi Kai,
>>> I was in Mannheim last week, visiting GESIS – too bad we missed
>>> the opportunity for a chat!
>>> In principle I'd be willing to take up this role. I'm interested
>>> in provenance issues and have already read the Provenance WG use
>>> cases to inform my work in the RDF WG, although nothing tangible
>>> has come out of this yet on my side.
>>> However… I believe there's a joint telecon between the RDF and
>>> Provenance WGs this Thursday. I unfortunately can't join the call
>>> as I'm travelling, but I think it might make sense to wait for
>>> the outcome of this call. If someone else from RDF WG volunteers
>>> to serve as liaison then I'd happily defer to them.
>>> Best, Richard
>>> On 12 Sep 2011, at 15:20, Kai Eckert wrote:
>>>> Hi Richard,
>>>> as you are a member of the RDF WG and hopefully interested in
>>>> provenance due to your work on Named Graphs and TriG with
>>>> Chris, would you be willing to act as a bridge person between
>>>> the RDF WG and the Provenance WG? Or can you name someone else
>>>> who would be suitable?
>>>> The Prov-WG [1] is creating recommendations to facilitate the
>>>> exchange of provenance information between applications. I am a
>>>> member of the connection task force [2] that collects
>>>> information on communities that have some overlap with this
>>>> work and might contribute to the recommendations or that should
>>>> be taken into account in some other way.
>>>> Your main duty would be to give us a short description of the
>>>> RDF WG with focus on provenance (or to proofread a description
>>>> that we create) and function as a contact for further
>>>> questions. Of course, any further contributions are highly
>>>> appreciated, as well. :-)
>>>> Cheers,
>>>> Kai
>>>> [1] http://www.w3.org/2011/01/prov-wg-charter [2]
>>>> http://www.w3.org/2011/prov/wiki/ProvenanceTaskForces
>>>> -- Kai Eckert Universitätsbibliothek Mannheim Stellv. Leiter
>>>> Abteilung Digitale Bibliotheksdienste Schloss Schneckhof West /
>>>> 68131 Mannheim Tel. 0621/181-2946  Fax 0621/181-2918
>> -- Kai Eckert Universitätsbibliothek Mannheim Stellv. Leiter
>> Abteilung Digitale Bibliotheksdienste Schloss Schneckhof West /
>> 68131 Mannheim Tel. 0621/181-2946  Fax 0621/181-2918

Kai Eckert
Universitätsbibliothek Mannheim
Stellv. Leiter Abteilung Digitale Bibliotheksdienste
Schloss Schneckhof West / 68131 Mannheim
Tel. 0621/181-2946  Fax 0621/181-2918
Received on Tuesday, 4 October 2011 20:12:51 UTC

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