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Re: graphql over graphs [Was: W3C Graph Data Workshop trip report]

From: Juan Sequeda <juanfederico@gmail.com>
Date: Fri, 8 Mar 2019 22:13:31 -0500
Message-ID: <CAMVTWDzxkuk1kvqmd5RyvKePUtDayqPcWCU6==N9Vxe6aWJcNQ@mail.gmail.com>
To: "Eric Prud'hommeaux" <eric@w3.org>
Cc: Semantic Web <semantic-web@w3.org>, Ruben Taelman <Ruben.Taelman@ugent.be>
EricP,

Ruben Taelman is the person to answer your question. Check out his position
paper:
https://www.w3.org/Data/events/data-ws-2019/assets/position/Ruben%20Taelman.pdf

--
Juan Sequeda, Ph.D
www.juansequeda.com


On Fri, Mar 8, 2019 at 4:33 PM Eric Prud'hommeaux <eric@w3.org> wrote:

> On Fri, Mar 08, 2019 at 01:42:12PM -0500, Juan Sequeda wrote:
> > All,
> >
> > I wrote my trip report on the W3C Graph Data workshop:
> >
> http://www.juansequeda.com/blog/2019/03/08/w3c-graph-data-workshop-trip-report/
>
> tx for the report! i'd hoped to go but a contract is taking a little
> longer than hoped. (if there's another in the next 14 days, i can
> probably go.)
>
> I was interested in the graphql stuff. I know the graphql spec is
> actually about trees but graphql is frequently used for graphs. Do you
> know if it actually supports graphs? As a litmus for that, can I look
> for people that know same person or do I have to look for people who
> know a person with the same name? In SPARQL, the former:
>
> SELECT ?whom {
>   ?a foaf:knows ?whom .
>   ?b foaf:knows ?whom .
>   (FILTER ?a < ?b)
> }
>
> The latter relies on heuristics to because there's no graph identifier
> on nodes. In SPARQL it would look kind of like:
>
> SELECT ?whom {
>   ?a foaf:knows [ foaf:name ?nameA ] .
>   ?b foaf:knows [ foaf:name ?nameB ] .
>   (FILTER ?nameA = ?nameB)
> }
>
> The latter is of course subject to false positives if multiple people
> have the same name.
>
>
> >  It was a successful event! In a nutshell
> > – There is a unified and vibrant graph community.
> > – A W3C Business Group will be formed and serve as a liaison between
> > different interested parties.
> > – There is a push for RDF*/SPARQL* to be a W3C Member submission.
> > – There is interest to standardize a Property Graph data model with a
> > schema.
> > – There is interest to standardize mappings between Property Graphs and
> RDF.
> >
> > Best,
> >
> > Juan
> >
> >
> >
> > --
> > Juan Sequeda, Ph.D
> > www.juansequeda.com
>
> --
> -eric
>
> office: +1.617.258.5741 32-G528, MIT, Cambridge, MA 02144 USA
> mobile: +1.617.599.3509
>
> (eric@w3.org)
> Feel free to forward this message to any list for any purpose other than
> email address distribution.
>
Received on Saturday, 9 March 2019 03:14:06 UTC

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