JiscMail Logo
Email discussion lists for the UK Education and Research communities

Help for DC-ARCHITECTURE Archives


DC-ARCHITECTURE Archives

DC-ARCHITECTURE Archives


DC-ARCHITECTURE@JISCMAIL.AC.UK


View:

Message:

[

First

|

Previous

|

Next

|

Last

]

By Topic:

[

First

|

Previous

|

Next

|

Last

]

By Author:

[

First

|

Previous

|

Next

|

Last

]

Font:

Monospaced Font

LISTSERV Archives

LISTSERV Archives

DC-ARCHITECTURE Home

DC-ARCHITECTURE Home

DC-ARCHITECTURE  September 2003

DC-ARCHITECTURE September 2003

Options

Subscribe or Unsubscribe

Subscribe or Unsubscribe

Log In

Log In

Get Password

Get Password

Subject:

Re: Abstract Model: related metadata

From:

Andy Powell <[log in to unmask]>

Reply-To:

DCMI Architecture Group <[log in to unmask]>

Date:

Mon, 22 Sep 2003 17:02:34 +0100

Content-Type:

TEXT/PLAIN

Parts/Attachments:

Parts/Attachments

TEXT/PLAIN (108 lines)

On Mon, 22 Sep 2003, Ann Apps wrote:

> I wonder if the definition of 'related metadata' in the proposed
> abstract model needs to be extended. There seems to me to be
> some inconsistency in the document. At present it says:
>
> 'Related metadata: A metadata record that describes a resource
> that is related to the resource described by a DC metadata record'.
>
> Igmoring that definition for a moment, the words 'related metadata'
> imply to me several different things and I suspect people are using
> it to means all of these:

I'm not sure what 'people' you are referring to here? As far as I know,
the term 'related metadata' is *only* used in my draft document? Within
that document, it is used as defined (I think).

> (a) More metadata about a resource that there is no appropriate DC
> property for. Where metadata is encoded as XML the DC in XML
> guidelines give examples of this as 'mixed' metadata.
>
> (b) The same metadata as in the DC property fields, but encoded
> using metadata properties from a different namespace.

I'm not aware of 'related metadata' being used to mean either of these -
not in the abstract model draft at least.

> (c) A combination of (a) and (b).
>
> (d) Metadata about a related resource.
>
> (a, b, c) are in fact encodings of application profiles.
>
> I'm a bit unsure about (d). It implies I could include in a DC record
> for a journal article metadata about other articles that the article
> references, using dcterms:references. Doesn't this break the
> principle (1-1?) that a DC record for a resource should not include
> metadata for another resource?

No, it does not do this. Quite the opposite. One of the purposes of the
model is to make it clear that 'related metadata' is *not* part of the
abstract 'record' and that all the properties in the record *must* be
attributes of the resource being described. Hence the abstract model
completely endorses the 1:1 principle.

Now, it may be the case that a particular encoding of instance metadata
(e.g. the RDF/XML encoding) may embed descriptions of multiple resources
within a single instance document - but that is a syntax issue. But by
looking at the way a particular syntax implements the abstract model, it
is possible to see that the 1:1 principle is preserved in the abstract
model.

> Or is this document an attempt ot
> relax that rule, reflecting that in reality people are creating records
> that include related metadata?

Again, no. The abstract model tries to clearly separate out the
descriptions of different resources when more than one resource is being
described. That is the whole purpose of introducing the notion of
'related metadata'.

> Later in the Abstract Model, DCSV is defined as a labelled string,
> and that it should be treated as related metadata. This seems to
> be using 'related metadata' as in (a,b,c) in some cases. Period,
> Box and Point are giving more, or more precise, metadata about
> the resource itself not about a related resource.

Not really... period, box and point give 'related metadata' about three
related resources - a 'period in time', a 'box in space' and a
'point in space'. These three things might be fairly abstract concepts,
but they are nonetheless resources.

> The now defunct
> DCMICite was providing more metadata about the resource, for
> which there was no appropriate DC property, not metadata for a
> related resource.

I agree that the DCMICite proposal does raise a slight problem with my
definition of 'related metadata'. dc:identifier is something of a special
case. Because the value URI for dc:identifier is the URI of the resource
being described, if there is 'related metadata' associated with that
property, then is is metadata about the resource, and not metadata about a
related resource. This is also true for any element refinements of
dc:identifier. I need to think a bit more about this. I'm not sure how
best to handle it.

> Though the Vcard example is metadata about a
> related resource.

Correct.

> So does the Abstrat Model document also need to include
> something about mixed metadata / application profile?

I think it probably does - but not for the reasons you outline above :-).

My current plan is to re-draft the document with an initial section that
covers an abstract model for DCMI metadata (though I might label this an
abstract model for DC[MI] application profiles). This model will then be
refined into abstract models for qualified and simple DC. I think that
will make the model cover what you are suggesting here.

Andy
--
Distributed Systems, UKOLN, University of Bath, Bath, BA2 7AY, UK
http://www.ukoln.ac.uk/ukoln/staff/a.powell +44 1225 383933
Resource Discovery Network http://www.rdn.ac.uk/

Top of Message | Previous Page | Permalink

JiscMail Tools


RSS Feeds and Sharing


Advanced Options


Archives

February 2024
January 2024
October 2023
September 2023
August 2023
July 2023
June 2023
May 2023
April 2023
March 2023
February 2023
January 2023
December 2022
November 2022
September 2022
August 2022
June 2022
May 2022
April 2022
March 2022
February 2022
January 2022
November 2021
October 2021
September 2021
August 2021
July 2021
May 2021
April 2021
March 2021
February 2021
January 2021
December 2020
November 2020
September 2020
August 2020
July 2020
June 2020
April 2020
March 2020
February 2020
January 2020
December 2019
November 2019
September 2019
August 2019
July 2019
June 2019
May 2019
April 2019
March 2019
February 2019
January 2019
December 2018
November 2018
October 2018
September 2018
August 2018
July 2018
June 2018
May 2018
April 2018
March 2018
February 2018
January 2018
December 2017
November 2017
September 2017
August 2017
July 2017
June 2017
May 2017
April 2017
March 2017
February 2017
January 2017
December 2016
November 2016
October 2016
September 2016
August 2016
July 2016
June 2016
May 2016
April 2016
March 2016
February 2016
January 2016
December 2015
November 2015
October 2015
September 2015
August 2015
July 2015
June 2015
May 2015
April 2015
March 2015
February 2015
January 2015
December 2014
November 2014
October 2014
September 2014
August 2014
July 2014
June 2014
May 2014
April 2014
March 2014
February 2014
January 2014
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007
August 2007
July 2007
May 2007
April 2007
March 2007
February 2007
January 2007
December 2006
November 2006
October 2006
September 2006
August 2006
July 2006
June 2006
May 2006
April 2006
March 2006
February 2006
January 2006
December 2005
November 2005
September 2005
August 2005
July 2005
June 2005
April 2005
March 2005
February 2005
January 2005
December 2004
November 2004
October 2004
September 2004
August 2004
July 2004
June 2004
May 2004
March 2004
February 2004
January 2004
November 2003
October 2003
September 2003
August 2003
June 2003
May 2003
April 2003
March 2003
January 2003
December 2002
November 2002
October 2002
September 2002
August 2002
July 2002
June 2002
May 2002
April 2002
March 2002
February 2002
January 2002
December 2001
November 2001
October 2001
September 2001
August 2001
July 2001
June 2001
May 2001
April 2001
March 2001
February 2001
December 2000
November 2000
October 2000


JiscMail is a Jisc service.

View our service policies at https://www.jiscmail.ac.uk/policyandsecurity/ and Jisc's privacy policy at https://www.jisc.ac.uk/website/privacy-notice

For help and support help@jisc.ac.uk

Secured by F-Secure Anti-Virus CataList Email List Search Powered by the LISTSERV Email List Manager