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CODE4LIB  January 2009

CODE4LIB January 2009

Subject:

Re: multimedia carrier vocabulary?

From:

Jonathan Rochkind <[log in to unmask]>

Reply-To:

Code for Libraries <[log in to unmask]>

Date:

Mon, 26 Jan 2009 17:52:33 -0500

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (173 lines)

Phew, that's very confusing, I'm going to have to read it over a couple
times, but I think it does help, thanks for the info Diane.

Diane Hillmann wrote:
> Jonathan:
>
> I asked Gordon your question, and here's his reply:
>
> /The RDA/ONIX framework itself
> (http://www.collectionscanada.gc.ca/jsc/docs/5chair10.pdf) provides
> information about how the RDA carrier terms have been derived (see
> Appendix D in particular). The RDA carrier type vocabulary (as in the
> metadata registry) is an example of what the RDA/ONIX framework refers
> to as a <base carrier category> vocabulary, which uses only three of
> the underlying attributes identified in the ontology
> (StorageMediumFormat, HousingFormat, IntermediationTool). The
> vocabulary does not incorporate any of the other framework ontology
> attributes such as EncodingFormat. As the framework says, these other
> attributes do not have a closed, controlled set of instances which is
> generally applicable across a wide range of communities. In order to
> gain the best interoperability potential from the framework, RDA has
> chosen to create separate vocabularies incorporating some or all of
> the non-base carrier categories, rather than, say, augmenting the base
> carrier !
> categories (the RDA carrier type vocabulary) - because these are
> guaranteed to interoperate with base categories from non-RDA
> communities. For example, RDA has a vocabulary for EncodingFormat (see
> section 3.19.3.3 in Chapter 3 of the RDA final draft
> (http://www.rdaonline.org/constituencyreview/Phase1Chp3_11_2_08.pdf);
> examples of the terms are <DVD audio>, <DVD-R>, <DVD video>, <HD-DVD>,
> etc.
>
> In RDA, a full description/label for the carrier of a specific
> resource is created from a combination of terms from several of these
> vocabularies, by following the guidance given in Chapter 3. See the
> examples given in Appendix M of the RDA draft
> (http://www.rdaonline.org/constituencyreview/Phase1AppM_11_10_08.pdf).
>
> Unfortunately, it looks as if the example for a DVD on page 26
> might be a source of confusion. The Carrier type (videodisc) does not
> appear in the vocabulary of Carrier types in Chapter 3 of RDA, but
> this is probably an oversight because it is given as an example base
> category in the RDA/ONIX framework. The Extent (2 DVD-videos)
> presumably invokes RDA 3.4.1.5b (because videodisc is missing from the
> carrier type vocabulary) or 3.4.15c (<DVD-video> is the term preferred
> by the agency creating the example record - and not to be confused
> with the Encoding format <DVD video>). The Extent in this example
> should probably be <2 videodiscs>.
>
> Although some of the terms in this (flawed) example may appear to
> be redundant, in fact only Media type (video) and Carrier type
> (videodisc) have genuine redundancy for general metadata purposes
> (Media type is derived from Carrier type). For example, a
> videocassette (carrier type) can also be encoded as DVD audio
> (encoding format), while a videodisc can be encoded as HD-DVD, etc.
>
> <Stuff> is complicated in the real world. A further source of
> difficulty is the general conflation of carrier and content types in
> single vocabulary terms, which is prevalent in most of the cataloguing
> guidelines in use around the world by libraries. Many of these
> guidelines have faced severe difficulty in recent years in clarifying
> the difference between content and carrier, especially with
> developments in digital technologies. The RDA/ONIX framework was
> developed to assist metadata creators to make that clarification (to
> improve interoperability between different metadata communities) and
> avoid the problems in previous cataloguing rules.
>
> For example, Jonathan asks for controlled vocabularies for
> <multimedia> materials, but does he mean mixed content types (still
> images, audio and text on a single carrier such as a <DVD>) or mixed
> carrier types (DVD, CD and workbook in a <multimedia kit>), or both?
> Whatever, RDA provides a way of creating unambiguous metadata in the
> fairly ambiguous environment of human metadata creators and consumers.
>
> Cheers
>
> Gordon
>
> Gordon Dunsire
> Depute Director, Centre for Digital Library Research, University of
> Strathclyde, Glasgow, Scotland/
>
> I hope this helps.
>
> Diane
>
> Jonathan Rochkind wrote:
>> Thanks Diane. That article on RDA/ONIX doesn't seem to include actual
>> terms, the actual vocabularly. I realize there are plans to
>> 'register' it officially, but prior to that, can the actual term list
>> be found anywhere in human-readable format? Or does it not exist yet?
>>
>> Jonathan
>>
>> Diane I. Hillmann wrote:
>>> Hi, Jonathan,
>>>
>>> Two points as you search out a solution:
>>>
>>> 1. I agree with your assessment of the current RDA carrier
>>> vocabulary. You might want to look at the RDA/ONIX vocabularies
>>> (still not registered, but there are plans to do so:
>>> http://www.dlib.org/dlib/january07/dunsire/01dunsire.html).
>>>
>>> 2. These vocabularies are a start, not a finish: once RDA and the
>>> vocabularies are "published" there's an intention to begin improving
>>> them. The first step was to get the out of the text, the second to
>>> build on the NSDL Registry's vocabulary development tools (some
>>> there, some not yet) to build them up in ways that will be much more
>>> useful.
>>>
>>> Diane
>>>
>>> Jonathan Rochkind wrote:
>>>> Anyone know of any good existing controlled vocabulary for 'format'
>>>> or 'carrier' for multimedia materials? I'm thinking of things like
>>>> "CD", "DVD", "digital", etc.
>>>>
>>>> The closest I can get is from RDA at
>>>> http://metadataregistry.org/concept/list/vocabulary_id/46.html
>>>> (thanks Karen and Diane), but it seems _really_ insufficient. As
>>>> far as I can tell "audio disc" is used for both a CD and a vinyl
>>>> disc, and there's nothing available there for "DVD" at all. Or
>>>> for "digital". Although I'm not sure what I mean by "digital", I
>>>> guess CD and DVD are both digital, but I was thinking of something
>>>> to identify a digital file on a computer network free of particular
>>>> carrier. I guess that wouldn't be in a carrier vocabulary at all,
>>>> after all, that would be sort of a null carrier. Phew, this stuff
>>>> does get complicated quick. Which I guess is why nobody's worked
>>>> out a good one yet.
>>>>
>>>> Too bad RDA's is so _far_ from good though. Any others anyone knows
>>>> about?
>>>>
>>>> Jonathan
>>>>
>>>
>>>
>>>
>>> Jonathan Rochkind wrote:
>>>> Anyone know of any good existing controlled vocabulary for 'format'
>>>> or 'carrier' for multimedia materials? I'm thinking of things like
>>>> "CD", "DVD", "digital", etc.
>>>>
>>>> The closest I can get is from RDA at
>>>> http://metadataregistry.org/concept/list/vocabulary_id/46.html
>>>> (thanks Karen and Diane), but it seems _really_ insufficient. As
>>>> far as I can tell "audio disc" is used for both a CD and a vinyl
>>>> disc, and there's nothing available there for "DVD" at all. Or
>>>> for "digital". Although I'm not sure what I mean by "digital", I
>>>> guess CD and DVD are both digital, but I was thinking of something
>>>> to identify a digital file on a computer network free of particular
>>>> carrier. I guess that wouldn't be in a carrier vocabulary at all,
>>>> after all, that would be sort of a null carrier. Phew, this stuff
>>>> does get complicated quick. Which I guess is why nobody's worked
>>>> out a good one yet.
>>>>
>>>> Too bad RDA's is so _far_ from good though. Any others anyone knows
>>>> about?
>>>>
>>>> Jonathan
>>>>
>>>
>>
>

--
Jonathan Rochkind
Digital Services Software Engineer
The Sheridan Libraries
Johns Hopkins University
410.516.8886
rochkind (at) jhu.edu

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