Hi Markus
Does this mean it will be possible to consider declaring triples outside of
a subject page ?
- Laurent
On Sun, Mar 27, 2011 at 2:22 PM, Markus Krötzsch <
mar...@semantic-mediawiki.org> wrote:
> Hi Yuri,
>
> thank you for your interest. Contributions are very welcome! We plan to
> use an RDF store as a backend for storing and querying data. This will
> not completely abolish the use of MySQL tables, but at least all queries
> should be answered by the triple store (no more SQL-based #ask). We will
> use SPARQL and SPARQL Update for all communication. SPARQL queries to
> external endpoints are not planned for the initial phase but adding them
> will be much easier after all the SPARQL communication methods are in SMW.
>
> I am currently changing the SMW code in various places to make it
> compatible with such a setup. The first RDF store I will consider is
> 4Store.
>
>
> How could you contribute to speed this up/make the features more complete?
>
> Right now, I could mainly use support with figuring out the best way of
> formulating queries for achieving certain effects, both with 4Store and
> with Virtuoso (and any other store people want to use). Example
> questions of this type (to be answered for each store that we care about):
>
> * "Could we use FILTER on URI strings to find URIs that begin with a
> certain prefix, or is this too slow?"
> * "Which parts of SPARQL UPDATE are currently (not) supported reliably?"
> * "Is it generally best to do SPARQL DELETE INSERT for updates, or does
> the store require us to decompose this into multiple queries? Are there
> performance differences?"
> * "What is the best way to implement counting queries on a given store?"
> (SPARQL 1.1 aggregates are still very preliminary and some stores have
> custom solutions)
>
> I have more of these questions, and they generally need some testing on
> the real store, so this would be a place where contributors could help
> (also since there are many different stores people might care about).
>
> There will be some more tasks that can be done as soon as I completed
> some more work on the SMW base architecture:
>
> * We would like to support Virtuoso and maybe other stores as well.
> After 4store works, this should be a rather independent task to try and
> get it to run with other stores (each store will need some amount of
> special handling or optimisation, this can be prepared by answering the
> above SPARQL support questions).
>
> * Testing. The more early testers we get, the better for the stability
> of the code.
>
>
> Regards,
>
> Markus
>
>
> On 26/03/11 13:06, Yury Katkov wrote:
> > Hello everyone!
> >
> > We have compared the current solutions for the triple store
> > integration [1] and found that all those solutions are either
> > incomplete or use very hard patches of the SMW core.
> > Recently Markus mentioned that the next version of SMW will be better
> > integrated with RDF store. Is it possible to get some details about
> > these planned integration features? We want to contribute to this
> > work by solving as many related tasks as possible. Such features would
> > be very useful for our installation of SMW and I believe for the whole
> > SMW project.
> >
> > Sincerely yours,
> > Yury Katkov
> >
> > [1] http://www.semantic-mediawiki.org/wiki/SPARQL_and_RDF_stores_for_SMW
> >
> >
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--
- Laurent Alquier
http://www.linfa.net
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