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   Re: [xml-dev] Meta-somethingorother (was the semantic web mega-permathre

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Michael Rys wrote:

> Once somebody shows me a description logic inference engine that 
> actually scales, I will become more interested in this aspect.

I suspect some people are gambling on the idea that you parallelize 
the engines and aggregate the results, instead of building very big 
ones. You start thinking in terms of a distributed search problem 
insted of a trying to scale a query/inference engine to deal with 
very large datasets. But it depends on what you mean by scale.

Theoretically I guess you get some "webby" leverage by being able 
ask questions of the all the DL capable nodes in a uniform way the 
way you can ask any webserver GET.

> The one advantage RDF as any extended entity relationship model has over 
> tree models like XML, is the ability to represent relationship graphs. 
> However, for that, there is a very well suited tuple based model: the 
> relational model. 

Indeed. I don't see that the RDF model has significant advantages 
over the relational one (that RDF uses globally unique keys is 
something of a detail). But, for my uses I find being able to gather 
up triples from various points in a distributed system to do things 
like track messages very useful and very lightweight and less 
working than having all the points emit or agree to XML formats or 
to have a standard stack in place. I guess what I do with RDF here 
is like data warehousing for systems administrators or an 
application level syslog. If I formalized things I might/could just 
use an XML grammar - we talk about this in work from time to time 
and seem to verring towards RSS/Atom as packaging format for such 
triples, but the point is that triples seem to be very handy to 
throw together.

By the way, I don't use  RDF/OWL for doing like ontology work or 
defining document formats.



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