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DC-SOCIAL-TAGGING  November 2006

DC-SOCIAL-TAGGING November 2006

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Subject:

Re: The "social" in social tagging (Was RE: Welcome!)

From:

"Houghton,Andrew" <[log in to unmask]>

Reply-To:

Dublin Core Social Tagging <[log in to unmask]>

Date:

Fri, 3 Nov 2006 13:55:52 -0500

Content-Type:

text/plain

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text/plain (59 lines)

> From: Dublin Core Social Tagging 
> [mailto:[log in to unmask]] On Behalf Of Pete Johnston
> Sent: 03 November, 2006 12:57
> To: [log in to unmask]
> Subject: Re: [DC-SOCIAL-TAGGING] The "social" in social 
> tagging (Was RE: Welcome!)

> The semantics of dc:subject 
> (and the other DCMI properties) is/are defined/managed by the 
> DCMI Usage Board.

Yes, but proposals can be put forth for community review.

> But I don't think I'd go as far as saying that dc:identifier, 
> dc:subject and dc:type are subproperties of other:tag. Yes, I 
> was suggesting that some "has-tag" relations are "has-genre" 
> relations (and so on), but _not_ that all 
> "has-genre"/"has-identifier"/"has-topic" relations (and so 
> on) are "has-tag" relations.

But, if a tag can take on the form: has-genre, has-identifier,
has-topic, then this would seem to imply that a tag is super-
property of the others or possible intersects with them when
there is a not-all association.

The question on my mind is: how are you going to rectify or make
an association when a tag takes on the form: has-genre, has-
identifier, has-topic?  For example, if a tag takes on the form,
has-identifier, then I probably want to include it as part of
my identifier searching and indexing.  If there isn't a sub-
property relationship, then how can I identify associations
between other:tag and dc:identifier, dc:type and dc:subject
to do something semantically intelligent?

A possible solution might be to use a similar model for has-tag
as the VES (Vocabulary Encoding Scheme) model.  Thus:

  <dc:identifier> <*:tag/> </dc:identifier>
  <dc:relation>   <*:tag/> </dc:relation>
  <dc:subject>    <*:tag/> </dc:subject>
  <dc:type>       <*:tag/> </dc:type>

  or

  <dc:identifier|relation|subject|type>
    <rdf:Description>
      <rdf:type rdf:resource='http://www.flickr.com/photos/tags/'/>
      <rdf:value />
    </rdf:Description>
  </dc:identifier|relation|subject|type>

although this inverts the relationship to say *:tag is-a-kind-of
dc:identifier, dc:relation, dc:subject, or dc:type.  Maybe that
does make more sense and would allow you to do something
semantically intelligent...


Andy.

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