-
[16:41] <@michaelp2> Johanna: Slide 6: Shifting complexity from the data level to a metalevel.
[16:41] <@michaelp2> … The data itself remains untouched.
[16:43] <@michaelp2> … Slide 8: Use cases. Whenever the schema can't be touched and there is no built-in provenance support.
[16:44] <@michaelp2> … Also: Transformation of data. Specification of source and process.
[16:46] <@michaelp2> … Slide 9: Europeana example. All provenance information is on the basic metadata level.
[16:48] <@michaelp2> … A new node is introduced with a new identifier (ore:Proxy, ore:Aggregation) to keep assertions about resources apart.
[16:50] <@michaelp2> … Slide 10: Alternative view that pushes provenance info to a separate level.
[16:50] <@michaelp2> … Slide 11: This kind of metadata prov info has to comply to some principles.
[16:54] <TomB_> Slide 16 looks like quads
[16:56] <@michaelp2> Agreed. On a low level, this is the requirement. Identification of a metadata statement.
[16:56] <@michaelp2> … or set of statements.
[16:59] <@michaelp2> Michael: I would be very interested in feedback received.
[17:02] <TomB_> Finish work by 2013
[17:02] <@michaelp2> Johanna: Deborah McGuiness remarked that named graph support will be part of the next RDF specs. Reification will be deprecated.
[17:04] <@michaelp2> … A new syntax that is not XML is perhaps going to be recommended.
[17:04] <oemer> …First working draft May 2011; Final in August 2012
[17:07] <@michaelp2> … Deborah: Approach couldbe extended to arbitrary levels of metadata.
[17:07] <charper> Apologies, but I have to run to a meeting.
[17:07] <charper> Joanna, thank you for this - very interesting stuff.
[17:07] <charper> Bye all.
[17:07] <@michaelp2> … Other comments: We should think about algebra in the contexts of named graphs.
[17:07] == TomB_ [6c1c6e28@gateway/web/freenode/ip.108.28.110.40] has quit [Quit: Page closed]
[17:07] <DGarijo> goodbye
[17:07] <charper> quit
[17:08] == charper [~cah10@TSD2.BOBST.NYU.EDU] has quit [Quit: Leaving.]
[17:08] <@michaelp2> … How do semantics change when making assertions about triples in the context of named graphs.
[17:09] <@michaelp2> … Other comments: Some people were interested in reasoning. Some were intersting in making provenance a first-class citizen in OWL.
[17:10] <@michaelp2> … Comments from Google: model provenance in information extraction scenarios
[17:11] <@michaelp2> … to keep track of extraction source (?)
[17:12] <@michaelp2> … Comment from Jun: Implement on use case sooner rather than later, so we can find out if this scales, how it works, etc.
[17:14] <@michaelp2> … Jun she highly encouraged us to take part in other standardization efforts (e.g.,
W3C Provenance WG)
[17:14] <kai_> … Are there known deficiencies regarding dublin core for provenance?
[17:15] <@michaelp2> Tom: Is there another level the group might address the issue?
[17:15] <@michaelp2> … as application profile.
[17:16] <@michaelp2> … The level of description set has to be specified (as or beyond named graphs).
[17:17] <oemer> Johanna: Comments: High demand for standartiziation of vocabularies for talking about named graphs
[17:19] == TomB_ [6c1c6e28@gateway/web/freenode/ip.108.28.110.40] has joined #dcprov
[17:23] <oemer> Michael: Efforts on descriptions and annotation sets
[17:23] <@michaelp2> … Deborah McGuiness said that there is no standard solution for all different application scenarios.
[17:25] <@michaelp2> Michael: We have a clear focus on metadata provenance. So we do not try to create an AP for provenance in general.
[17:27] <@michaelp2> Kai: Even after RDF has named graph supoport, there is still going to be confusion how to deal with metadata provenance.
[17:27] <@michaelp2> s/supoport/support
[17:29] <@michaelp2> … We want to provide some guidance for people how to handle these problems in a simple way that is not necessarily coupled with RDF.
[17:30] <DGarijo> i got kicked out :O
[17:31] <@michaelp2> Daniel: Should our recommendation be for any vocabulary or for specific vocabularies?
[17:31] * michaelp2 Try to dial in again
[17:34] <oemer> Michael: Seperation of schema and metalevel data:
[17:35] <kai_> Daniel: Do we give examples for the Prox-XG use cases?
[17:38] <oemer> … Question of who asserted the metadata
[17:38] <@michaelp2> … In the news aggregator scenario, we might have a look about concurrent assertions about resources.
[17:38] <@michaelp2> … which is metadata provenance just like the Europeana UC.
[17:40] <TomB_> Thank you all! You will send a report to the list?
[17:40] <@michaelp2> Kai: Thanks again, Johanna! Meeting adjourned.
[17:40] <@michaelp2> Hi Tom, yes, good idea.
[17:41] <DGarijo> thanks johanna, nice presentation!
[17:41] <DGarijo> godbuye all
[17:41] == DGarijo [501cac6b@gateway/web/freenode/ip.80.28.172.107] has quit [Quit: Page closed]
[17:41] <TomB_> You can use a log of the
IRC as a rough draft….
[17:42] <@michaelp2> We usually post minutes, but I think we shoudl get better at summarizing the discussion …
[17:42] <@michaelp2> … post minutes to the wiki, I mean.
[17:43] <kai_> I will post the minutes as usual, but I also can write a summary based on Johannas Notes of the Feedback that we discussed today
[17:44] <kai_> And we really have to bring the discussions and results to the mailing list, I admit we are not yet good at that