W3C home > Mailing lists > Public > public-lod@w3.org > October 2010

Re: Deltas of RDF files from Sindice or other site?

From: Giovanni Tummarello <giovanni.tummarello@deri.org>
Date: Sun, 3 Oct 2010 18:37:55 +0200
Message-ID: <AANLkTikqgJAzSMdiFBYqkShokaLP_iWUWVxavmO-fZ_9@mail.gmail.com>
To: Matthias Quasthoff <matthias--web@quasthoffs.de>
Cc: public-lod <public-lod@w3.org>, Sindice developers list <sindice-dev@lists.deri.org>
Hi Mattihas,

sorry for the delay. it is indeed a possible API which we call
"longstanding query" or "notification api" . Not yet available , but
we have many requests for it so it wil come.

my advice at the moment would be to do it yourself client side using
say a DB state and fetching the data from our cache
there is a timestamp which reflect the last updated date.
you might want to send sindice specific messages to the

Cheers Gio

On Fri, Oct 1, 2010 at 7:21 PM, Matthias Quasthoff
<matthias--web@quasthoffs.de> wrote:
> Dear all,
> is there a way of obtain the changes to RDF graphs over time, e.g., from
> Sindice? I.e., that I not only see
>> _:p1 foaf:knows _:p2, _:p3
> but rather
>> [ rdf:subject _:p1; rdf:predicate foaf:knows; rdf:object _:p2; dc:date
>> "sometime long ago" ]
>> [ rdf:subject _:p1; rdf:predicate foaf:knows; rdf:object _:p3; dc:date
>> "more recently" ]
> It'd be so useful to have such information (maybe using more appropriate
> vocabulary) to somehow build something social like the Facebook Wall or
> something based on FOAF. I'm currently collecting such data myself with the
> input of PSTW, but maybe it has already been done?
> Thanks + cheers
> Matthias
Received on Sunday, 3 October 2010 16:38:24 UTC

This archive was generated by hypermail 2.3.1 : Wednesday, 7 January 2015 15:16:09 UTC