W3C home > Mailing lists > Public > public-media-annotation@w3.org > October 2008

Re: Next call

From: Raphaël Troncy <Raphael.Troncy@cwi.nl>
Date: Tue, 14 Oct 2008 13:30:46 +0200
Message-ID: <48F482E6.30908@cwi.nl>
To: nack@uva.nl
CC: Felix Sasaki <fsasaki@w3.org>, public-media-annotation@w3.org

Dear All,

> The variety of use cases in combination with their internal overlap
> (e.g. larger parts of the 'mobile' use case can also be covered by the
> 'adaptation' and 'presentation' use cases) suggests that a different
> approach might be more useful, namely the analysis versus different
> trajectories:

I second Frank's analysis. I think I have used a slightly different 
terminology during our last phone call, but I meant roughly the same 
thing, i.e. I called that different dimensions (or views) through which 
we need to look at the problems. These dimensions are orthogonal so to 
speak and should not be exclusive or opposed to each other.

> * the media trajectory: which media particularities do we have to
> describe so that humans can be supported in their working processes. The
> media are different in their expression strength (e.g. visuals are
> strong on their denotative power, where audio or haptics are better in
> stimulating feelings, text is stong on paradigmatic processes). Taking
> in consideration what the cognitive power of a medium is might help us
> to destil the basics to be described to achieve the widest coverage.

As Frank said, one of these dimension is the media (image, audio, video) 
and by extension the modality covered.

> * the context trajectory: which information elements are necessary to
> achieve the correct context? In the 'mobile' scenario this means: we
> think about what is essential about location and once that is clear we
> determine how that can be minimally described so that a larger variety
> of processes/actions can be performed (I assume we do not model the
> processes but rather design metadata that allow them (the applications)
> to access the appropriate material).

Exactly, defining the boundaries of the various contexts we consider and 
determining which metadata properties should be modeled is one of our 
outstanding issues. I had the feeling that brainstorming on possible 
scenarios / use cases was a way to achieve this.

> * the task trajectory: how should, whatever we design, support the
> processes users perform on and with media? Here the questions are:
> - which processes (e.g. search, manipulation, generation, .....) would
> we like to support?
> - do we make a distinction between general and specific tasks (general
> are those that can be found in a number of task processes, such as search)?

What would be a specific task? Could you give an example?

> - do we have to model the process or is it enough to provide structures
> so that this process can be performed?

The later.

> Based on the above we might be able to establish a 'content trajectory'
> with the aim to establish a basic semantic core set of 'tags'.

I would avoid the term 'tag' in this context and would recommend to use 
the term 'description property' or simply 'property'.

> Finally, during our discussions about the various use cases we already
> saw that there are more general concepts / processes to be described
> (search is one of them) and then quite specific ones. The question we
> would have to answer is - do we actually wish to go into the details or
> rather leave that to the domains - so that we define a basic semantic
> layer that can be used by everybody, enabling the definition of detailed
> substructures underneath (aiming for particular applications).
> Not sure what you think about that but look forward to hearing your opinion.
> I can try to work these ideas out in a bit more detail for the face to
> face in Cannes if the group thinks that is worthwhile..

I think this is the way to go ...
Best regards.


Raphaël Troncy
CWI (Centre for Mathematics and Computer Science),
Kruislaan 413, 1098 SJ Amsterdam, The Netherlands
e-mail: raphael.troncy@cwi.nl & raphael.troncy@gmail.com
Tel: +31 (0)20 - 592 4093
Fax: +31 (0)20 - 592 4312
Web: http://www.cwi.nl/~troncy/
Received on Tuesday, 14 October 2008 11:36:50 UTC

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