[topicmapmail] How to address Web resources with XTM?

[Murray Altheim]

Jan Algermissen wrote:
> Hi,
> 
> (as said before) I am doing some work on using XTM for interacting
> with Web technology (rather than using Web technology to merely
> transport XTM).
> 
> In a Web context, there are (IMO) three kinds of resources (in
> Web-sense):
> 
> 1) abstract concepts (car,dog,democracy)
> 2) addressable information resources ( a certain HTML page, a certain jpeg image)
> 3) resources where the focus on interaction (feeds, search engines, XHTML validators,..)
> 
> While Topic Maps make a clear distinction between 1) and 2) I am not sure how
> to address resources of kind 3).
> 
> Consider the resource: 
> 
>    http://validator.w3.org/check
> 
> There is stuff I know about that resource:
> 
> 1) in a human sense:
> 
>    - it is a validator that I can feed HTML and get a report of possible errors
> 
> 2) in pure technical sense (possibly 'understandable' by a piece of software)
> 
>    - if one invokes GET on the URL, it allows a parameter called 'uri'
> 
>    - if one invokes POST on the URL, it accepts a message body of mime type
>      "multipart/form-data" (a file upload)
> 
> 
> Suppose I want to use XTM to express that information, how would I address
> the validator? With <subjectIndicatorRef> or <reourceRef>?

Jan,

I *think* you're perhaps making this more complicated than it might
be. To characterize anything using XTM, you add a type to it. So in
the case of trying to state that X is a type of

 > 3) resources where the focus on interaction (feeds, search engines, XHTML validators,..)

you create a Topic for that and add it as a type to your topic. If you want to
share the concept with others, publish a PSI. I'm below using my Ceryle namespace:

   <topic id="interaction"><!-- PSI topic for interaction -->
     <subjectIdentity>
       <subjectIndicatorRef xlink:href="http://purl.org/ceryle/#interaction"/>
     </subjectIdentity>
   </topic>

   <topic id="google">
     <instanceOf>
       <topicRef xlink:href="#interaction"/>
     </instanceOf>
     <subjectIdentity>
       <resourceRef xlink:href="http://www.google.com/"/>
     </subjectIdentity>
   </topic>

Unless I'm missing something, that's it. (obviously, you could flesh out
the above topics with more information, names, etc.)

Murray

......................................................................
Murray Altheim                    http://kmi.open.ac.uk/people/murray/
Knowledge Media Institute
The Open University, Milton Keynes, Bucks, MK7 6AA, UK               .

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