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Re: RDF triple assertions live forever?

From: Renato Golin <renato@ebi.ac.uk>
Date: Fri, 28 Mar 2008 09:45:41 +0000
Message-ID: <47ECBE45.3000108@ebi.ac.uk>
To: Phillip Rhodes <mindcrime@cpphacker.co.uk>
CC: semantic-web@w3.org, foaf-dev@lists.foaf-project.org

Phillip Rhodes wrote:
> In a discussion that has arisen recently on the foaf-dev list, somebody
> pointed out that they've been told that RDF triples live forever.  That 
> is, once something is asserted it is considered asserted until, as it
> was put, "the entropic heat death of the universe."

Hi Phillip,

This assertion is, to me, the same as to say all web pages are static, 
meaning that you can cache them locally without any further attempt to 
get it back from the server again.

All web browsers have a fair cache policy which we're all used to 
(Shift-F5 and stuff) so no big deal to do the same with triples and RDF 

Also, with RDF is easier to say that site A has "the same triple as" 
another site B but with different content, who will you trust? Let's say 
you have a timestamp annotating the triples, would you still believe the 
"newest" one?

Site A:
   renato is bad (today)

Site B:
   renato is good (10 years ago)

It's the same with RDFAuth, you have to trust someone sometime, you need 
a list of trusted sites, people, documents, beliefs. If your site says 
"renato is bad" it may "like" better Site A and even automatically add 
it to the "trusted sites" or even keep a score of things you agree with 
the site as the "automatic trust level" as opposed to your "hardcoded 
trust level" when you trust someone even if you don't agree with him/her.

The possibilities are endless...

Received on Friday, 28 March 2008 09:47:01 UTC

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