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Re: SPARQL and Web 2

From: Giovanni Tummarello <g.tummarello@gmail.com>
Date: Mon, 10 Oct 2005 10:37:43 +0200
Message-ID: <434A2857.6050903@gmail.com>
To: Henry Story <henry.story@bblfish.net>
CC: semantic-web@w3.org

Hi Henry,
I dont see how sparql exactly saves them bandwidth.. 
I havent been much into sparql lately but last i checked it was 
supporting the named graph paradigm which means you'd ask amazon for 
their entire graph and then execute the query locally.  If you meant 
that amazon would instead execute an sparql query for you an return you 
just the very hits then

a) if just some sparql queries are allowed, isnt this what a web service 
would do today anyway with just rdf results?

b) otherwise, would they really allow you to execute arbitrary graph 
queries? complexities usually explodes exponentially (possibly) with the 
number of unbounded variables, and is very sensitive to the data 
structure as well

c) even if they really did execute our arbitrary query, would they 
provide the answer we look for?
if you want to know all amazon books written by a stanford professor 
there is no way out. There must be a computational space where the list 
of professors and the list of books is known at the same time. What to 
do then, cause amazon to request the list of professors from stanford 
and execute the query there?

Giovanni
Received on Monday, 10 October 2005 08:38:59 UTC

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