- From: Pierre-Antoine Champin <pierre-antoine.champin@liris.cnrs.fr>
- Date: Thu, 21 May 2009 11:13:27 +0100
- To: David Singer <singer@apple.com>
- CC: public-media-annotation@w3.org
- Message-ID: <4A152947.3010907@liris.cnrs.fr>
A few comments: - I think we should not distinguish URN from dereferenceable URIs; this debate is out of scope for us. Any URI should be considered as an identifier, possibly dereferenceable. - I think we should allow textual descriptions or URIs, but also be able to disinguish between the two - I think we should allow explicit multiple values The last two points have been my concerns when developing the toy application at [1] (which should be updated now with the top tags). pa [1] http://liris.cnrs.fr/~pchampin/wsgi/mawg/ David Singer a écrit : > 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? > >
Received on Thursday, 21 May 2009 10:18:23 UTC