[OAI-implementers] dublin core clarification?

deridder deridder@cs.utk.edu
Mon, 13 May 2002 19:57:38 -0400 (EDT)


Thank-you for the clarification, Kevin.  I like your approach.  It
removes the ambiguity from constructing records, and allows for
meaningful search results --- once consensus and compliance are reached.

I understand it means a lot of work in reconstructing existing records,
but better now than a few million records down the road...

  --jody

On Mon, 13 May 2002, Gladwell,
Kevin wrote:

> Jody
>
> The <about> is for information about the harvested metadata, particularly
> the intellectual rights and the origin, NOT for the resource.
>
> Tim Cole, in another email reply, has provided a useful review of the issues
> over whether the metadata describes the original resource or the digitized
> object.  There are ways that DC, particularly the source and relation
> elements, can be used to 'solve' this problem. However, unless there is a
> common approach, there will be interoperability problems for resource
> discovery when searching against metadata harvested from different OAI
> providers.
>
> My thinking is that having metadata describe the original item is the
> simplest and most acceptable approach; the original item might, of course,
> be in digital format.  The only difference between the metadata of a
> physical item and a digital manifestation would be the format, which could
> be SGML or JPEG for the digital object.  If the intellectual content of the
> digital object differs from the original then the metadata should describe
> the digital object, the date element being the creation date of the digital
> object.
>
> The 2 examples in section 5 of the OAI-PMH 2.0 beta
> (http://www.openarchives.org/OAI/2.0/openarchivesprotocol.htm) follow this
> approach, although an available date is included in the second example.
>
> Some of the draft DC-Library Application Profile
> (http://www.loc.gov/marc/dc/library-application-profile_200204.html) also
> supports this view. For example the mandatory Date Created says "Use for the
> creation of the intellectual content".  Perhaps this forum is an appropriate
> place for these issues to be resolved whilst the profile is still a draft?
> I agree with Tim that when it comes to the museum world, creation date is
> probably inappropriate for a rock sample!  Coverage tends to be used more in
> this domain.
>
> What do others think?
>
> Kevin
>
>
> -----Original Message-----
> From: deridder [mailto:deridder@cs.utk.edu]
> Sent: 10 May 2002 20:03
> To: Gladwell, Kevin
> Cc: OAI Implementors
> Subject: RE: [OAI-implementers] dublin core clarification?
>
>
> Hi, Kevin--
>
> What you have said supports my understanding of the <about> tag
> "as a means to provide information regarding the origins of the metadata
> part of the record".
> (http://www.openarchives.org/OAI_protocol/2.x/openarchivesprotocol.htm)
>
> Let me see if I understand your position correctly:
>
> If the item under discussion is an issue of a slavery-era local
> newspaper, (such as our Emancipator set) the "publisher" and "rights"
> fields are those that apply to the original newspaper;  "creator" would
> perhaps be the company or editor; format would be (perhaps)
> newsprint; "date" would be the date of original printing.
>
>    Then, perhaps in the <about> tag section, information would be entered
> such as current rights access to the digitized material;  publisher of the
> digitzation;  creator of the digitized object;  date of digitization,
> and here, format might be SGML and/or JPEG.
>
> Thus, if the item under discussion were a book, the "identifier" in the
> regular dc section would likely be the ISBN, whereas the "identifier" in
> the "about" section would likely be the unique OAI identifier, the URL at
> which the digitized object(s) could be viewed, a CORC ID, and so on.
>
> Am I understanding you correctly?
>
> And then if the oai_dc file were to be translated into a QUALIFIED Dublin
> Core record, the information in the "about" tag section would somehow be
> incorporated with the information in the rest of the file???
>
>
> Thank you for your time and clarification.
>
> --jody
>
>  On
> Fri, 10 May 2002, Gladwell, Kevin wrote:
>
> > In unqualified DC it's the original item.  You need richer metadata
> > to also include information about the digitized object.
> >
> > Kevin
> >
> > Kevin Gladwell
> > Strategy Analyst
> > The British Library, e-Strategy & Programmes
> > Boston Spa, Wetherby
> > West Yorkshire, LS23 7BQ, UK
> > Tel: (+44) 01937 546237  Fax: (+44) 01937 546872
> > E-Mail: kevin.gladwell@bl.uk
> >
> >
> > -----Original Message-----
> > From: deridder [mailto:deridder@cs.utk.edu]
> > Sent: 10 May 2002 16:46
> > To: OAI Implementors
> > Subject: [OAI-implementers] dublin core clarification?
> >
> >
> >
> >  I know this is a simple and perhaps stupid question, but I'd rather
> > *look* stupid than *be* stupid.  We have some confusion over here:
> >
> >  Do the Dublin Core elements describe the original item, or the
> >     digitized objects made from that item?
> >
> > The DC webpages simply say all the elements refer to the "resource",
> > but I'm not clear as to whether that "resource" is the digital one,
> > or the  original item.
> >
> >  Example:
> >    A multi-page letter, written in 1869, is the original document;
> >    An SGML transcription with accompanying JPEGs for each page,
> >       comprise the digitized object.
> >
> >  Does the "date" element refer to the creation of the digitized object,
> >    or the date the letter was written?
> >  Does the "creator" refer to the person who scanned the document and
> >    transcribed its contents, or does it refer to the original author
> >    of the letter?
> >  Does the "format" list text/sgml and JPEGS, or simply text?  And
> >    if this original document was an old JPEG about which metadata
> >    was created, is the correct format JPEG and that metadata format?
> >    Or just "photgraph"?
> >
> >
> >  I have found we have a mix of both in our files at present, and I need
> >  some clarity so I can clean up this mess and prevent future madness!!
> >   (I would like my scripts and repository to be correct!!!)
> >
> >
> > Thank you in advance!!!!
> >
> >    --jody
> >
> >
> >
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> Coming soon to the British Library Galleries :
>
> Trading Places : the East India Company and Asia (from 24 May)
> Magic Pencil : Children's Book Illustration Today (from 1 November)
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