W3C home > Mailing lists > Public > public-media-annotation@w3.org > May 2009

Re: top tag descriptions, clarifications

From: Felix Sasaki <felix.sasaki@fh-potsdam.de>
Date: Thu, 21 May 2009 11:46:02 +0200
Message-ID: <ba4134970905210246n154621e7h43ff6909d2431b33@mail.gmail.com>
To: David Singer <singer@apple.com>
Cc: public-media-annotation@w3.org
Just a remark that many of what you describe is syntactic (language
identification, URIs vs URNs string values, ISO 6709 values, ...), which
makes me even more convinced that we need a "syntactic" column in all
mapping tables.


2009/5/21 David Singer <singer@apple.com>

> I have an action to improve the descriptions on<
> http://www.w3.org/2008/WebVideo/Annotations/wiki/Top_Supported_Tags>
> I'm not quite sure what sort of improvement I should be allowed to do,
> however.
> Let's see where I think an improvement might be indicated.
> For many tags:
>  -- in what language is this expressed?  Are multiple e.g. titles in
> different languages allowed?
> Enumerations:
>  -- for tags like contributor (contribution role), genre etc.: are we
> planning to have a defined set of names, some extension capability, or a
> free-for-all?
> For names
>  -- do we allow a de-referencable pointer as well as a textual name? E.g.
> are <http://www.sony.com> and "Sony Corporation" permitted?  How do we
> distinguish the two, if so?
> For couplets (contributor, relation):
>  -- we need to say how the pairing is done.  Is this textual, e.g. {a, b}?
> ma:creator -- is this the 'human names' of the creator(s), or their unique
> IDs (e.g. URN) or  de-referencable pointer (e.g. URI to their FaceBook page
> :-))?
> ma:keyword -- if there is more than one word, is it a phrase, or are they
> separate keywords?  Do we need to say phrases are in quotes? Are keywords an
> 'enumerated space' (as above)?
> ma:duration -- someone at the meeting was arguing that this might be
> different from the actual media duration, but I can't remember why. If it's
> the actual media duration, it's a property rather than annotation.
> ma:spatialDimension -- we need units, and we need to know if they are
> uniform.  I would say that the dimensions must be uniform (square grid) and
> that some unit must be specified (cm, inch, square-pixel, point, ...)
> ma:genre -- enumeration?  (note typo in the 4th column, 'resrouce')
> ma:createDate -- can we say that this is a date as defined in ISO 8601
> string format?  That allows for presentation, comparison, conversion to
> other date systems etc.  We probably don't need to care about the b.c.e
> issue.
> ma:compression -- what namespace is used to name compressors?  Or is this a
> URI to the spec.?
> ma:location -- probably an ISO 6709 (Annex H) string, right?  Do we want
> other possible additional values here (e.g. a human name, "Barcelona") etc.?
> ma:collection -- rather than a name, wouldn't an identifier (URN or URI) be
> better?
> ma:rating -- how is the person or organization identified?
> ma:targetAudience -- isn't this a triplet?  e.g. "Venezuelan Board of TV
> Censors", "Permissible broadcast hours", "03h - 04h"?  Why is rating not one
> of these triples?
> --
> David Singer
> Multimedia Standards, Apple Inc.
Received on Thursday, 21 May 2009 09:46:42 UTC

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