Re: Why URIs in RDF?


I am not sure if it is appropriate to post to this list, apologies if it
isn't. I have only a short question to help me understand these important

Sandro Hawke wrote:

> My points:
>   1.  Producers and consumers of RDF information need to know what
>       many of the URIs in a document denote, if useful communication
>       is to occur.  They can learn that nicely by doing a web lookup
>       on the URIs.

But isn't the whole point that one cannot rely on getting a particular document
(representation) when "doing a web lookup on the URI"? 

So, what if the representation I GET back for a URI at time T1 denotes another
meaning than the representation I GET back for the same URI at time T2? Doesn't that
mean I can't rely on the meaning of the URI to be constistent over time?

Does the RDF-approach of using URIs for KR consider this? Can you explain how,
or send me a pointer to a description?



Jan Algermissen                 
Consultant & Programmer	        

Received on Wednesday, 15 January 2003 05:30:28 UTC