RE: [xml-dev] 'is-a' Relationships in XML?

["Michael Kay" <mike@saxonica.com>]

I have absolutely no idea what you mean by terms such as "semantic queries"
or "semantic query languages". I do wish we could stop using these terms.
You put some bits in at one end and you get some different bits out at the
other; the transformation of one set of bits to the other is purely
mechanical, and they don't mean anything unless human beings choose to
attach meaning to them. That's the way computers work.

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay 

 

> -----Original Message-----
> From: Stephen Green [mailto:stephengreenubl@gmail.com] 
> Sent: 06 May 2010 13:28
> To: xml-dev
> Subject: Re: [xml-dev] 'is-a' Relationships in XML?
> 
> I'd propose some best practice principles then
> 
> 1. semantic queries regarding XML should ideally be written 
> in a semantic query language
> 
> 2. semantic queries using XPath should be considered second best
> 
> 3. semantic conformance rules / criteria should be tested 
> using semantic assertions (just as we can test structural 
> criteria using XPath assertions such as Schematron, XSD 1.1, 
> test assertion markup with XPathsm and other associations 
> between rules and XPaths, etc)
> 
> 4. semantics can be defined for a markup using semantic / 
> ontology languages
> 
> 5. semantic expressions can be evaluated over the markup 
> using semantic queries but for this, maybe further work is 
> needed to establish how to associate XPaths with the semantic 
> definitions
> 
> Best regards
> 
> Stephen D Green
> 
> 
> > Apologies for harping back on the
> >  former thread.
> >
> > Given then that I need to define the
> > semantics of a markup outside of that
> > markup and outside of a schema,
> > perhaps using RDF or the like, I'd probably want to associate many 
> > classes and properties or expressions with XPaths in my markup.
> > If I used RDF, it seems to like URIs or URLs or the like 
> (there seem 
> > to be many such identifier standards of late). Would there be a 
> > standard way to add something like an XPath to perhaps the 
> end of such 
> > a URL, so I can point a semantic expression like class or 
> property to 
> > a node in the markup?
> > XQuery? It would be nice to have a semantic query like 
> SPARQL be able 
> > to resolve
> >  it.
> >
> > Thanks
> >
> > Stephen D Green
> >
> >
> 
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