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RE: Proposal for an additional term: mediaType

From: Suliman, Suraiya H <suraiya.h.suliman@lmco.com>
Date: Fri, 21 Sep 2012 12:21:24 +0000
To: "Evain, Jean-Pierre" <evain@ebu.ch>, "'Dan Brickley'" <danbri@danbri.org>, Public Vocabs <public-vocabs@w3.org>, Greg Grossmeier <greg@creativecommons.org>
Cc: Thomas Baker <tom@tombaker.org>, Stuart Sutton <sasutton@dublincore.net>
Message-id: <BFFD7A930CB0954793403080DA18A10C2179870B@HVXDSP43.us.lmco.com>
Trying to revive this thread as those of us working on the LRMI tagger see a need to capture "mediaType" information and would like to work towards consensus on how to handle this in Schema.org.

Given that DC and EBUCore (among others) have tried to address this issue and have some proposed solutions, how can we accomodate format/medium in schema.org? I think attributes "encoding" and "genre" ad dress things covered by DC "type". There is still a need to for things like MIMEtype, the physical medium,  container format etc. Can we start with the DC "format" as the straw-man and see if this adequately covers "format" in schema.org?


From: Evain, Jean-Pierre [evain@ebu.ch]
Sent: Wednesday, August 29, 2012 1:10 PM
To: 'Dan Brickley'; Public Vocabs; Suliman, Suraiya H; Greg Grossmeier
Cc: Thomas Baker; Stuart Sutton
Subject: EXTERNAL: RE: Proposal for an additional term: mediaType

These are well known issues.

EBUCore precisely enriches DC to better address media.

Format is split into audio / video / data /image /document formats: generic types like MIMEtype, medium, container format and others are explicit.

The same for type refined into object type (is it a programme, a scene, a clip, etc.), the genre and the target audience.


-----Original Message-----
From: Dan Brickley [mailto:danbri@danbri.org]
Sent: mardi, 28. août 2012 11:38
To: Public Vocabs; Suliman, Suraiya H; Greg Grossmeier
Cc: Thomas Baker; Stuart Sutton
Subject: Re: Proposal for an additional term: mediaType

Thanks all. Yes, FRBR is quite another level of complexity, although it is driven by the same concerns Richard mentioned - the concern to distinguish works in the abstract from the particularities of their various practical forms. And to be able to describe useful properties of both without getting into a muddle.

These are not new distinctions and as Martin and Ivan point out, we should take care not to re-use existing phrases (like 'media type') in unfamiliar ways. Or for that matter to arbitrarily introduce new wording for existing concepts; or if we do, at least we should document the relationships.

Dublin Core makes some related distinctions. Compare ...

"The file format, physical medium, or dimensions of the resource."
"Examples of dimensions include size and duration. Recommended best practice is to use a controlled vocabulary such as the list of Internet Media Types [MIME]."

"The nature or genre of the resource."
"Recommended best practice is to use a controlled vocabulary such as the DCMI Type Vocabulary [DCMITYPE]. To describe the file format, physical medium, or dimensions of the resource, use the Format element."

A fairly short list of DCMI Types seems to be at
http://dublincore.org/documents/dcmi-type-vocabulary/#H6 (scroll down a bit...) or see also http://dublincore.org/documents/2000/07/11/dcmi-type-vocabulary/

I didn't find a list yet corresponding to the granularity of Greg's request, but maybe I missed it. Tom, Stuart ... any pointers?

>From Greg's mail...

 - Audio CD
 - Audiotape
 - Calculator
 - CD-I
 - Diskette
 - Duplication Master
 - DVD/ Blu-ray
 - etc

These seem closer to 'dc:format' to me, but also seem to emphasise supporting physical hardware - rather than types of media. I find it hard to think of 'Calculator' as a media type, for example.

Greg, Suraiya, ... can you say a bit more about your usage scenario?
What kind of record would 'Calculator' or 'Duplication Master' appear in, for example?




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Received on Friday, 21 September 2012 12:23:11 UTC

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