Re: [RSP] Call Minutes

Hello All,

As we committed to start working on this model, I gave it a first try,
taking into account the discussion we had on the calls and on the mailing
list.
It's just a first attempt, so please feel free to criticize and/or entirely
rewrite it and/or discuss it in the list as well.

As it is on the wiki, everyone can provide her input or modify it ;)

http://www.w3.org/community/rsp/wiki/RDF_Stream_Model

See you next week, I would also like to ask DERI for hosting the call, as
they have gently done so until now.

Good weekend!

Jean-Paul





2013/12/12 Axel Polleres <axel@polleres.net>

> Darko,
>
> you are bringing validity time into the picture, it seems… whereas I
> understood that the use for time stamps at the moment was mainly meant for
> transaction time… [1]
> is that right? If we have use cases that need validity time, I also think
> intervals make sense (FWIW, we have designed an extension for SPARQL to
> query validity time intervals [2]).
>
> best,
> Axel
>
> 1. http://en.wikipedia.org/wiki/Temporal_database
> 2. http://www.sciencedirect.com/science/article/pii/S1570826811000771
>
> --
> Prof. Dr. Axel Polleres
> Institute for Information Business, WU Vienna
> url: http://www.polleres.net/  twitter: @AxelPolleres
>
> On Dec 12, 2013, at 5:05 PM, "Anicic, Darko" <darko.anicic@siemens.com>
> wrote:
>
> > Hi Jean-Paul, Emanuele and all,
> >
> > I like the proposal too, but I would not limit the proposal only to one
> time stamp. As we discussed before, I find the interval-based definition
> better, e.g., with startTime and endTime. The startTime may be optional in
> cases where the point-based timestamp is preferred, e.g., similarly as in
> [1] - a related approach to the Streaming Linked Data Framework, sent by
> Emanuele (see #6 in Section Vocabulary from [1]).
> >
> > Cheers,
> > Darko
> >
> > [1]   http://km.aifb.kit.edu/sites/lodstream/
> >
> > Von: Emanuele Della Valle [mailto:emanuele.dellavalle@polimi.it]
> > Gesendet: Dienstag, 10. Dezember 2013 11:15
> > An: Jean-Paul; Anicic, Darko; public-rsp@w3.org
> > Betreff: Re: [RSP] Call Minutes
> >
> > Hi Jean-Paul, Darko and all,
> >
> > I like the proposal. You may want to check out [1] where a similar
> approach was proposed. We named the graphs o *instantaneous graphs*
> (shortly iGraphs) and the graph containing the meta data Stream Graph
> (shortly sGraph). This solution is currently implemented in our Streaming
> Linked Data Framework [2].
> >
> > GRAPH :sGraphA {
> >   :iGraph-1 :timeStamp "t_1"^^xsd:dateTimestamp .
> >   :iGraph-2 :timeStamp "t_2"^^xsd:dateTimestamp .
> >   …
> >   :iGraph-n :timeStamp "t_n"^^xsd:dateTimestamp .
> > }
> >
> > GRAPH :iGraph-1 {…}
> > GRAPH :iGraph-2 {…}
> >
> > GRAPH :iGraph-n {…}
> >
> > Cheers,
> >
> > Emanuele
> >
> > [1] http://ceur-ws.org/Vol-628/ldow2010_paper11.pdf
> > [2] http://disi.unitn.it/~themis/publications/iswc13.pdf
> >
> >
> >
> > On Dec 9, 2013, at 5:07 PM, Jean-Paul <
> jpcalbimonte@delicias.dia.fi.upm.es>
> >  wrote:
> >
> >
> > Hi,
> >
> > The one in [1] is a very generic model proposed by Axel. We agreed to
> start from it to define the RDF Stream model.
> > If you see the minutes, you will see we are pointing to something that
> *might* look like this:
> >
> > o :timeStamp "foo"^^xsd:dateTimestamp . GRAPH o { t1, tn}
> >
> > We have set an ACTION, that consists in formalizing these ideas in the
> wiki. It is our homework for next call. But we can surely discuss here as
> well.
> >
> > best regards,
> > jp
> >
> >
> >
> >
> >
> > 2013/12/9 Anicic, Darko <darko.anicic@siemens.com>
> > Hi all,
> >
> > since I was not present at the last telco, could you please let me know
> whether the RDF stream model that was discussed actually is the one
> described as “graph oriented” in [1], or there are some differences in the
> two?
> > Cheers,
> > Darko
> >
> > [1] http://www.w3.org/community/rsp/wiki/RDF_Stream_Models
> >
> > Von: jean.paul.ik@gmail.com [mailto:jean.paul.ik@gmail.com] Im Auftrag
> vonJean-Paul
> > Gesendet: Samstag, 7. Dezember 2013 00:19
> > An: public-rsp@w3.org
> > Betreff: [RSP] Call Minutes
> >
> > Hi all,
> >
> > Please find in the wiki the minutes of today's call. Next one is on Dec
> 20th, and is the last for 2013. We will restart in January, the 17th.
> >
> > http://www.w3.org/community/rsp/wiki/Telecon_06.12.2013
> >
> > Thanks again for your support.
> >
> > Good weekend!
> > Jean-Paul
> >
> > --
> > jpcik!
> >
> >
> >
> > ---------------------------------
> > I have moved to EPFL, please email me to:
> > jean-paul.calbimonte@epfl.ch
> >
> >
> >
> > --
> > jpcik!
>
>
>


-- 
jpcik!