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Re: AW: AW: Visual exploration of linked data with the Information Workbench and Microsoft Pivot

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Fri, 26 Mar 2010 17:32:24 -0400
Message-ID: <4BAD27E8.6040006@openlinksw.com>
To: Peter Haase <peter.haase@fluidops.com>
CC: public-lod@w3.org, semantic-web@w3.org
Peter Haase wrote:
>> Peter,
>> Are you able to implement a pattern similar to RelFinder where the
>> SPARQL endpoints are configurable? We also do something similar re. our
>> iSPARQL tool (i.e., have a list of known endpoints but leave the user
>> with option to add others).
>> I've played around extensively with Pivot (your stuff and ours), so I
>> am
>> very interested in a loosely coupled solution.
> Yes, in our system one can define ad hoc federations across multiple SPARQL
> endpoints. 
> However, the performance in such a loosely coupled scenario is - not
> surprisingly - orders of magnitude worse than in a centralized scenario,
> especially when the queries involve joins across multiple SPARQL endpoints.
> We are working on improving this situations as well ;-)
> Regards,
> Peter

As you know, we are working of SPARQL-FED also, and this rat is going to 
be skinned in a variety of ways courtesy of HTTP and inner DBMS engine 

For now, is it possible to enable users point to SPARQL endpoints of 
their choice? Of course, you keep the one that works best for your demo 
as the default etc..



Kingsley Idehen	      
President & CEO 
OpenLink Software     
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen 
Received on Friday, 26 March 2010 21:32:58 UTC

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