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<trackbot> Date: 29 April 2010
<cygri> nice. thanks mhausenblas!
<cygri> Scribe: edsu
that's dc area
ww: are you on the call?
<PaulZH> I'm also calling IP
<vassilios> vassilios also on IP phone
... we'll have a presentation from martin of ctic, and hopefully one from li ding of rpi
... time permitting i'd like to talk about the scope and deliverables of the group
... and hopefully write those down on the wiki
<cygri> wiki page: http://www.w3.org/egov/wiki/Data_Catalog_Vocabulary/Datos_de_Asturias
martin: here at ctic we develop
an open data solution in spain, a good proof of concept of the
linked data solution
... here you can see some metadata based on the VoID and Dublin Core vocabularies
... you can see license and provenance information, and the available data formats
... the generation of the catalog is using sparql and xslt
martin: we have a list of
catalogs (a meta catalog)
... similar to the deri dcat approach, title, description, license
martin: also have a rss feed of the catalogs, which is used to geenrate a map of the catalogs
cygri: you have used void for the
data catalog, are the datasets in the catalog all available as
rdf? this is not the case for most catalogs (e.g.
... do you think it makes sense to use void when the dataset is not rdf?
martin: i think void is by definition only for rdf data sets ... so i think no?
cygri: that's what void was made for originally, but it possibly could be applied in a broader scope ... but i take your answer as saying you'd only use it for rdf data sets?
martin: i think void could be useful
cygri: do we have a new attendee
... ok, it's brandt from epa in washington
bobbin: i'm on the call too
<DavidJames> LuigiMontanez and I are sharing a conference phone
<bobbin> Bobbin Teegarden, semantic consultant in Seattle
cygri: seems like Li isn't going to make the call
cygri: there wasn't a clear
consensus at the end of the last call, about defining an
abstract vocabulary about the data you find in catalogs, and
then we could have several different documents that explain how
you could use these terms in a concrete syntax: rdf/xml, rdfa,
... a couple of points were raised on the mailing list
... erik suggested we should be clear about the types of serices we want to enable
... so that's where i would like to pick up
<DavidJames> we're getting a lot of echo and delay on the line
cygri: i sent an email
... one deliverable might be use cases and requirements
... a second thing could be an rdf vocabulary and reference that lists the terms, which required/optional, examples
... it would make sense to use some sort of formalism, uml, or perhaps rdf schema, since it will give us one possible way of deploying dcat data
... in the email the choice of concrete format maybe we should not decide on this yet ... if we have some clear requirements for using syndication formats for example ; or if we can do everything with rdfa -- it's hard to say before we know what requirements we have
... do you think we could delay the decision about the concrete format until we do use cases requuirements?
<PaulZH> I do agree to postpone the decision
edsu: i agree in principle, but it will take more time
<LI_DING> li is joining
LI_DING: we're reviewing cygri's proposal at http://lists.w3.org/Archives/Public/public-egov-ig/2010Apr/0083.html
cygri: i think by writing down use cases and requirements we'll get a better understanding about technical choices
LI_DING: what is the current status, discussion the requirements?
cygri: yes, basically we're
discussing whether we should abstract out of the concrete
syntax, and write use cases and requirements
... there doesn't seem to be a lot of disagreement or agreement with this
LI_DING: i want to hear more voices first i think
<DavidJames> Regarding http://lists.w3.org/Archives/Public/public-egov-ig/2010Apr/0083.html ... I like the list of requirements.
<DavidJames> The deliverables also look good to me.
LI_DING: i'd need more time to
review the proposal, but i think we want to keep things as
minimal as possible to get something out there quick, also i
think we should keep use cases simple, how much do we want to
... we should try to produce something actionable
cygri: i don't hear any strong objection to moving forwards with the deliverables i outlined in the email ; for now we should continue working with this assumption
<LI_DING> one thing could be a challenge
<DavidJames> Can we ask everyone to vote (or something similar)?
LI_DING: maybe we can have a
challenge a deliverable: how many gov't data sets can you
... lets grow the number of government data sets, more people using the vocabulary
cygri: but what does this mean for the format we want to design?
<vassilios> i think it is not a matter of number of datasets but number of catalogues
LI_DING: it's a parallel effort: one side we grow the datasets, and on the other we develop the terminology, vocabulary that can be used
cygri: DavidJames you asked
whether we should do a vote, i'm not sure what point this would
... since there doesn't seem to be any strong disagreement
DavidJames: i think it would be nice to hear the agreement
cygri: i think this is something
i'd like to do on the next call, rather than rushing it
... to make sure there is enough time
cygri: we want to have use case
or stories for what people want to be able to do: for example i
want to be able to get a list of datasets from data.gov that
are not supported by the current data.gov user interface
... i'd be interested to hear about what use cases people on the call have
... for standard formats for data catalogs
vassilios: i'd like to be able to query multiple catalogs, to be able to query other geographic regions
<vassilios> cross-catalogue querying
cygri: so you want to be able to federate national catalogs into say a european union catalog?
<george> (fed/state/local) gov agency independently published catalog using (some set of standard) vocab for dynamic aggregation of catalogs
<george> would like to see bottom up (as per Li - in use) drive basic (extensible) rdfs vocab convergence for w3c blessing
DavidJames: for the
nationaldatacatalog we'd like to consume data from other data
catalogs, we'd like to have one uniform way of getting at
... for municipalities and state governments we'd like to do a similar thing, enabling federation across many levels
george: i think i share the interest that david and luigi have ; would be great to have some sort of vocabulary at the w3c that reflects what's in use as much as possible
martin: i think federation is soemthing i would like to do ; i agree with vassilios with his approach
<LI_DING> I was dropped from the call
cygri: it might be a good next step to draft this use case as a little document, to sketch how it could look in practice as a story
<vassilios> i could help on this
cygri: there are a couple of other use cases on the mailing list, maybe we can get those into written form too
<vassilios> and i thin kit is more or less the same whether we speak about EU or USA
cygri: would be great if you could start it, and we could see if other use cases are covered
<scribe> ACTION: vassilios to document a federation use case for dcat [recorded in http://www.w3.org/2010/04/29-egov-minutes.html#action01]
<trackbot> Could not create new action (unparseable data in server response: No child element named 'id') - please contact sysreq with the details of what happened.
<LuigiMontanez> yes, I have access
cygri: wiki is ok?
cygri: great, there is a page
where i've copy pasted stuff from the email, i propose we add
subsections there, use this as a live document
... so that's it for this week, thank you all for joining in
<george> thank you cygri
<cygri> thanks all!
<LuigiMontanez> thank you cygri, edsu for transcribing
<vassilios> thank you!
<george> thanks edsu
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