Kingsley, thank you for your tips. I think that Daniel has already answered your questions. :) As he said well, at the moment, I am trying to figure out how to create FTS for Virtuoso's RDF repositories. Of course, we want to understand better what is possible to do with Virtuoso, and I will be working on it next weeks. :) Regards, Samur On Tue, Jun 2, 2009 at 12:56 PM, Daniel Schwabe <dschwabe@inf.puc-rio.br>wrote: > Kingsley, > anticipating Samur's answer, > Kingsley Idehen wrote: > >> ...Samur, >> >> Are you exploiting the "Retry" feature of Virtuoso's Anytime Query >> function? >> > no > >> >> Look at: http://lod.openlinksw.com/sparql (note the options at the bottom >> of the page which are part of our sparql protocol extensions). >> > are you referring to the timeout feature? > >> >> You have to think in terms of location aware cost-optimization if you want >> to venture into the federated query realm (SPARQL or SQL). We've done this >> work long time ago re. SQL (the Virtual DBMS aspect of Virtuoso), and >> similar work will be delivered re. SPARQL in due course (the SPARQL-BI >> extentions and the Anytime Query functionality are critical infrastructure >> components for this endeavor). >> > We currently use ActiveRDF to manage federation, and it is not customized > to specific stores. As I've stated before, at the moment we are trying to > keep Explorator as general as possible, so we are avoiding building > server-specific versions (although we already did some for FTS...). > In general, if we think that Explorator can be used to explore the LoD > cloud (with many different enpoints and servers), we cannot assume > vendor-specific extensions. > > > Cheers > D > > >
Received on Tuesday, 2 June 2009 16:17:02 UTC