On 10/28/15 6:25 AM, Markus Krötzsch
wrote:
On 28.10.2015 10:11, Dimitris Kontokostas wrote:
...
Definitely. However, there is some infrastructural gap
between
loading a dump once in a while and providing a *live* query service.
Unfortunately, there are no standard technologies that would
routinely enable live updates of RDF stores, and Wikidata is
rather
low-tech when it comes to making its edits available to
external
tools. One could set up the code that is used to update
query.wikidata.org <http://query.wikidata.org>
(I am sure it's
available somewhere), but it's still some extra work.
DBpedia Live does that for some years now. The only thing that
is
non-standard in DBpedia Live are the changeset format but now
this is
covered by LDPAtch
http://www.w3.org/TR/ldpatch/
At the moment DBpedia Live only produces the changeset that
other
servers can consume.
The actual SPARQL Endpoint is located in an Openlink server and
we
already use the same model to feed & update an LDF
Endpoint (Still in
beta)
If there *were* an ldpatch service for
Wikidata, then you *could*
do this for Wikidata as well, using standard tools (on the W3C "WG
Note" level) from this point on. However, there is no such service
now, and I am not aware of any activity that is aimed at building
such a service. It's not rocket science to set this up, but it
requires non-standard techniques and custom tools (starting with
parsing edit histories of Wikidata).
Markus
Markus,
You can use existing standards to achieve these goals, as is already
demonstrated. Fundamentally, you can use RDF Language to describe
anything for machine processing, and of course that includes feeds,
and the nature of said feeds (formats, deltas, refresh schedules
etc..).
Standards and technology aren't the problem here, so let's not frame
matters that way, for broad clarity.
--
Regards,
Kingsley Idehen
Founder & CEO
OpenLink Software
Company Web: http://www.openlinksw.com
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