RE: rdfms-resource-semantics

Aaron Swartz [mailto:aswartz@swartzfam.com] wrote:
>
>Lee Jonas <lee.jonas@cakehouse.co.uk> wrote:
>
>> A third way, as I said in another mail, is to move away from saying RDF
>> describes RDF 'resources' to saying RDF describes (RFC2396) resources by
>> their Referents.  Then define 'Referent' to be "That part or view of a
>> resource which MAY be referred to by a URI reference", and delegate
>> definitions of resources, URIs, URI references, etc. to RFC2396.
>
>But that doesn't help much -- the only difference is we're stuck defining
>referent instead of redefining resource. 

RDF cannot *redefine* resource, merely overload it - a source of much
confusion.

>And we're _still_ redefining
>resources, because we now say that they have parts and views.
>

I take your point about 'parts and views'.

My intention was to get away from having to redefine anything from RFC2396,
hence the use of the vague term 'referent' - something pointed to.

Although RFC2396 does describe a fragment as a "partial view", their use in
RDF goes against the stated intent.  In section 4.1:

[[
   The semantics of a fragment identifier is a property of the data
   resulting from a retrieval action, regardless of the type of URI used
   in the reference.  Therefore, the format and interpretation of
   fragment identifiers is dependent on the media type [RFC2046] of the
   retrieval result.  The character restrictions described in Section 2
   for URI also apply to the fragment in a URI-reference.  Individual
   media types may define additional restrictions or structure within
   the fragment for specifying different types of "partial views" that
   can be identified within that media type.

   A fragment identifier is only meaningful when a URI reference is
   intended for retrieval and the result of that retrieval is a document
   for which the identified fragment is consistently defined.]]

This suggests to me that fragments operate over the bitstream fetched, not
on the abstract resource being accessed.  What are the arguments against
removing fragments from RDF?

regards
Lee

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Received on Friday, 8 June 2001 10:01:46 UTC