Martynas,
Denny is right. You could set up a Virtuoso endpoint based on our RDF
exports. This would be quite nice to have. That's one important reason
why we created the exports, and I really hope we will soon see this
happening. We are dealing here with a very large project, and the
decision for or against a technology is not just a matter of our
personal preference. If RDF can demonstrate added value, then there will
surely be resources to further extend the support for it. So far, we are
in the lead: we provide close to one billion (!) triples Wikidata
knowledge to the world. So far, there is no known use of this data. We
need to go step by step: some support from us, some practical usage from
the RDF community, some more support from us, ...
In reply to your initial email, Martynas, I have to say that you seem to
have very little knowledge about what is going on in Wikidata. If you
would follow the development reports more closely, you would know that
most of the work is going into components that RDF does not replace at
all. Querying with SPARQL is nice, but we are still more focussed on UI
issues, history management, infrastructure integration (such as pushing
changes to other sites), and many more things which are completely
unrelated to RDF in every way. Your suggestion that a single file format
would somehow magically make the construction of one of the
world-largest community-edited knowledge bases a piece of cake is just
naive.
Now don't get me wrong: naive thinking has it's place in Wikidata --
it's always naive to try what others consider impossible -- but it
should be combined with some positive, forward thinking attitude. I hope
that our challenge to show the power of RDF to us can unleash some
positive energies in you :-) I am looking forward to your results (and
happy to help if you need some more details about the RDF dumps etc.).
Best wishes,
Markus
On 29.10.2014 18:26, Denny Vrandečić wrote:
Martynas,
since we had this discussion on this list previously, and again I am
irked by your claim that we could just use standard RDF tools out of the
box for Wikidata.
I will shut up and concede that you are right if you manage to set up a
standard open source RDF tool on an open source stack that contains the
Wikidata knowledge base, is keeping up to date with the rate of changes
that we have, and is able to answer queries from the public without
choking and dying for 24 hours, before this year is over. Announce a few
days in advance on this list when you will make the experiment.
Technology has advanced by three years since we made the decision not to
use standard RDF tools, so I am sure it should be much easier today. But
last time I talked with people writing such tools, they were rather
cautious due to our requirements.
We still wouldn't have proven that it could deal with the expected QPS
Wikidata will have, but heck, I would be surprised and I would admit
that I was wrong with my decision if you can do that.
Seriously, we did not snub RDF and SPARQL because we don't like it or
don't know it. We decided against it *because* we know it so well and we
realized it does not fulfill our requirements.
Cheers,
Denny
On Mon Oct 27 2014 at 6:47:05 PM Martynas Jusevičius
<marty...@graphity.org <mailto:marty...@graphity.org>> wrote:
Hey all,
so I see there is some work being done on mapping Wikidata data model
to RDF [1].
Just a thought: what if you actually used RDF and Wikidata's concepts
modeled in it right from the start? And used standard RDF tools, APIs,
query language (SPARQL) instead of building the whole thing from
scratch?
Is it just me or was this decision really a colossal waste of resources?
[1] http://korrekt.org/papers/__Wikidata-RDF-export-2014.pdf
<http://korrekt.org/papers/Wikidata-RDF-export-2014.pdf>
Martynas
http://graphityhq.com
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