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RE: Proposal for modifications to the Media Ontology Document

From: Bailer, Werner <werner.bailer@joanneum.at>
Date: Fri, 5 Jun 2009 10:12:41 +0200
To: Veronique Malaise <vmalaise@few.vu.nl>, Daniel Park <soohongp@gmail.com>
CC: "public-media-annotation@w3.org" <public-media-annotation@w3.org>
Message-ID: <CD9846F872C7874BB4E0FDF2A61EF09F155CD0D590@RZJC1EX.jr1.local>
Dear Véronique, all,

Thanks a lot for the proposed changes. I agree to most of them, find my comments to the others below:

> ------
> Further it defines semantics-preserving mappings between 
> elements from existing formats.
> -> what does "semantics-preserving" mean? 

I suggest to drop it, actually the mapping table tells how much semantics is preserved or lost.

> -> we do not define mappings between formats, it is mappings 
> between the formats and a common set, not between them (cf 
> the directed vs non-directed mapping discussion).
> -> Further, a mapping between a set of popular existing 
> formats for describing multimedia (on the Web?) and this 
> ontology has been defined.

I would not write "on the Web", actually some of the formats are not really Web-related.

> ------
> Nevertheless it is being published with the aspiration to 
> gather wide feedback on the general direction of the Working 
> Group. In particular we would like to encourage feedback on 
> section 4 Property definition.
> -> section 4 should be renamed, we do not define the 
> properties, we simply list the properties taken into account 
> in the core part of the ontology.

I'm not sure about renaming. First, we give a brief definition of the properties (that sentence is also called definition in the Dublin Core Spec). Second, if we are going to define data types in future version it is even more justified to call it definition.

> ------
> 2.2 Identifiers of formats
> Why not merge this section with the "formats in scope" which 
> is a long list without information and is redundant with this 
> table, much nicer than a flat list.

I agree to merging. Looking at the table, I'm not sure if the arbitrary examples for each of the formats provide any useful information here. 
 
> ------
> 3 Property value type definitions
> 3.1 Basic property value types
> ->3 Property value type definitions
> Property value types are the types of values that properties 
> can have. These can be: 
> [remove: 3.1 Basic property value types, as there are no 
> complex values defined so far]
> -> this section can also go under the format in scope section 
> gathering the previous table.

I think once we start defining the types of our properties, the basic property value types could become a subsection of 4.

> ------
> Last comment:
> -> by the way, we never define ontology, and never state that 
> we consider a light weight description of properties and 
> their informal mappings as an ontology. We can also add that 
> some more canonical forms of ontologies, with restrictions 
> and a formal semantics might be derived from this informal 
> list at a further stage.

We had this discussion about different layers of conformance (more formal and more informal ones) some time ago. I think it could be mentioned on the introduction of this document that we have now the set of properties, for which a more formal definition might be provided in future version. (Simply adding data types is a step into this direction.)

Best regards,
Werner



> On Jun 1, 2009, at 9:10 AM, Daniel Park wrote:
> 
> 
> 	This is a draft agenda for this week call tomorrow. 
> Feel free to let chairs know if any items are omitted...
> 
> 	 
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> *===================================================================*
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> 	*AGENDA*
> 
> 	*[1] Administratives*
> 
> 	Chair: Daniel 
> 
> 	Scribe: Werner
> 
> 	Regrets: 
> 
> 	[a] Agenda review and approval of previous minutes 26 May 2009
> 
> 	http://www.w3.org/2009/05/26-mediaann-minutes.html
> 
> 	[b] Schedule for the next call on 9 June 2009
> 
> 	 
> 	
> 
> 	*[2] Items*
> 
> 	[a] Action items
> 
> 	Please give us the status of your Action Item. We will 
> go through the list 
> http://www.w3.org/2008/WebVideo/Annotations/track/actions/open
>  <http://www.w3.org/2008/WebVideo/Annotations/track/actions/open> 
> 
> 	[b] Initial draft of "Ontology for Media Entity 1.0"
> 
> 	    i) Status (Wonsuk, Veronique)
> 
> 	    ii) Attribute descriptors (David)
> 
> 	    
> http://lists.w3.org/Archives/Public/public-media-annotation/20
09May/0099.html <http://lists.w3.org/Archives/Public/public-> media-annotation/2009May/0099.html>     
> 
> 	    iii) Syntactic descriptions comment from Felix
> 
> 	
> http://lists.w3.org/Archives/Public/public-media-annotation/20
09May/0096.html <http://lists.w3.org/Archives/Public/public-> media-annotation/2009May/0096.html> 
> 
> 	      
> 	
> 
> 	[c] Browsable version (Ruben), can it be done automatically?
> 
> 	        
> http://www.w3.org/2008/WebVideo/Annotations/wiki/MediaOntology
>  <http://www.w3.org/2008/WebVideo/Annotations/wiki/MediaOntology> 
> 
> 	[d] Schedule for API and Ontology for Media Resource 
> 1.0 First Draft.
> 
> 	Set up a time plan in order to move it to a draft
> 
> 	[e] AOB
> 
> 	---------------------------------------------
> 
> 	  
> 	
> 
> 	-- 
> 	Soohong Daniel Park
> 	Standard Architect, http://blog.naver.com/natpt 
> 	DMC Business, Samsung Electronics, KOREA
> 	
> 
> 
> 
> 
> 
Received on Friday, 5 June 2009 08:13:41 GMT

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