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Re: In or out of line?

From: Libby Miller <Libby.Miller@bristol.ac.uk>
Date: Tue, 3 Aug 2004 16:16:26 +0100 (BST)
To: Lisa Seeman <lisa@ubaccess.com>
Cc: Libby Miller <Libby.Miller@bristol.ac.uk>, www-rdf-interest@w3.org
Message-ID: <Pine.GSO.4.61.0408031554130.8175@mail.ilrt.bris.ac.uk>



On Tue, 3 Aug 2004, Lisa Seeman wrote:

>
> Sure,
> (it is actually what i have been doing, but someone was saying that I am
> doing it wrong so I thought I should check up on myself)
>
> I am defining what the role is of different stuff  found on a web page.
> (so that i can render it more accessibly to the user device and preference)
>
> So for example, I may want to say, "this link has content type of a site map
> link",
>
> where  " this link" is the subject and a xpointer to any links to
> contacts.html on the site, "has content type"  is the predicate and a "site
> map link" is the object.
>
> (I can  then  do fun stuff like assign an access key "s" or  "k" if the user
> is a Russian speaker, or render it as an icon of a site map -consistently
> across sites...)
>
> now for my check up....
>
> The object "site map link"  is not a literal, ore a URI to some definition
> in HTML but is actually a  URI to an instances of a class (or actually a
> derived subclass) done in RDF Schema.
> This way i can define what a sitemap link is a clear and useful and
> extendable way.
> e.g.
> site map link, is an instance of a standard web link which is a derived
> class of link which is a derived class of  content type.

ok I think I understand, bear with me...

>
> That way , if someone else is using my types, and has never heard of a
> sitemap link, they can know that it is a type of standard web link, so they
> can treat it like all other standard web links (maybe assign an access key
> in  sequence).  I can also use OWL and require of all content types at least
> one name and a description.
>
> So back to my triple
>
> "this link has content type of a site map link"

http://example.com/contactus.html lisa:contentType lisa:SiteMapLink

and

lisa:SiteMapLink  rdfs:subclass lisa:HTMLLink

I might be totally off the wall here....but I don't think you could do 
it like this, because it's the act of linking the the url you're 
interested in, not the page that the link refers to.

>
> 1,  " this link" is the subject and a xpointer to any links to
> contactus.html on the site,

right so this makes sense to me. You'd have

http://example.com/page1.html/*/h:a/[@href=contactus.html] lisa:contentType lisa:SiteMapLink

(sorry, that pathetic stab at an xpointer is probably completely wrong)

> 2, "has content type"  is the predicate and is defined as a Property an RDF
> schema
> 3  a "site map link" is the object and is itself an instance of a subclass
> all defined in an RDF schema.

I think this is how I would do it.

>
> On the other hand , my friend, (who is probably brighter then me, so I
> should at least entertain the possibility that he is right) is saying I
> should change the following:
>
> 2, "has content type"  is the predicate and is defined as a CLASS in an RDF
> schema
> 3  a "site map link" is the object and should be defined in an XML
> restricted language.

I'm not sure about this. I think I'd do it your way. But I could be 
wrong!

>
> I don't want do this because I think it is less extendable.
>
> Thanks Libby, and keep well

you too! hope that helps...

Libby

> ----- Original Message -----
> From: "Libby Miller" <Libby.Miller@bristol.ac.uk>
> To: "Lisa Seeman" <lisa@ubaccess.com>
> Cc: <www-rdf-interest@w3.org>
> Sent: Tuesday, August 03, 2004 9:36 AM
> Subject: Re: In or out of line?
>
>
>>
>>
>> hi Lisa
>>
>> On Mon, 2 Aug 2004, Lisa Seeman wrote:
>>
>>> I have a controversial question hear (ok, maybe it is not that
> controversial)
>>>
>>> I am thinking of using RDF instances from schema   as objects of a
>> triple as appose to being used as predicates.
>>> The reason I am doing that is because i want the objects themselves
>> to have clear relationships, be extendable etc .
>>
>> Could you give some specific examples of what you want to do?
>>
>> Libby
>>
>
>
>
Received on Tuesday, 3 August 2004 11:18:55 UTC

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