RE: Initial draft of Use Cases and Requirements for Media Ontology 1.0

Dear all,

My comments concern the following issues:

- tagging / tagging vs. CH:
I agree to Raphaels view that the actual alignment of tags is out of scope for the media ontology, just as the alignment of different vocabularies in the CH use case. This would prevent the goal of creating a general lightweight ontology. However, as pointed out by Raphael, interoperability ontologies designed for tagging should be supported.

- requirements from CH use cases:
Yes, the requirements should be stated more clearly, I can work on that later this week. While the interop issue is crucial in this use case it probably cannot be directly translated into an interop requirement for the ontology and/or API.

- requirements summary (section 4):
1. standards: it should be stated what we understand here by bridging, i.e. not full compatibility but supporting a wide common subset and defining appropriate mappings
3. same comment about bridging; I suggest to drop the reference to the CH use case here, as IMO the requirement of deploying/displaying metadata aligned with content is broader and comes from other use cases as well  
5. I am not sure about the role of the API w.r.t interoperability. I see the role of the API rather as access point to the ontology we are developing, but not something that implements mapping. In the media ontology properties have well defined meaning, and well defined mappings are described in the specification, but not built into the API (at least not in a core part). I also suggest to replace the term "tag" with "property" in this sentence.

Best regards,
Werner 

> -----Original Message-----
> From: public-media-annotation-request@w3.org 
> [mailto:public-media-annotation-request@w3.org] On Behalf Of 
> vmalaise@few.vu.nl
> Sent: Montag, 10. November 2008 10:47
> To: Troncy, Raphael
> Cc: 이ì>ì"; public-media-annotation@w3.org; Felix Sasaki
> Subject: Re: Initial draft of Use Cases and Requirements for 
> Media Ontology 1.0
> 
> 
> Dear all,
> 
> Thank you very much Raphael for these extensive comments! 
> Indeed the questions 
> were not intended to be left in the later version of the Note 
> (and I did not 
> change the preambule part as Felix said that we should focus 
> only on the content 
> as for now), but were directed to our group's members, to get 
> people's opinion 
> and clarification about the different mentioned points. 
> And you are perfectly right that we should put the document 
> online and refer to 
> its URL, but so far I could not get the CVS environment 
> running, my bad! Wonsuk, 
> if you were more successful, could you take care of putting 
> the draft at the 
> right place and send around the URL? Thanks a lot and sorry 
> about the delay 
> (just got a Mac and I'm trying to figure out what is missing 
> in the environment 
> that I have!)!
> 
> Best regards,
> Vero 
> 
> Quoting Raphaël Troncy <Raphael.Troncy@cwi.nl>:
> 
> > 
> > Dear Wonsuk, Felix, all,
> > 
> > > Please find and review the closed file that is initial 
> draft of Use 
> > > Cases and Requirements for Media Ontology 1.0.
> > > If you have any comments or opinion, please let me know.
> > 
> > Please, find below my review for this document. This is a 
> mix of typos I 
> > have noticed and questions and comments I have ...
> > 
> > For the future versions, could we put them on the web with a proper 
> > revision number to reference and just distribute URIs 
> instead of (html) 
> > attachments?
> > 
> > * Abstract: 'ontolgoy' -> ontology
> > 
> > * Status of this document: it is outdated for this 
> document. I think it 
> > is aimed to be a Working Group Note rather than a Rec.
> > 
> > * Section 1: 'concret' -> concrete
> > 
> > * Section 2.1: Overview
> >    - The 3 dimensions fall a bit from the sky, making the 
> reading a bit 
> > dry. Is it possible to add some references showing where these 3 
> > dimensions come from?
> >    - The current text contains a lot of questions ... "for 
> us", so I 
> > guess not meant for the working draft reader. Are they? For 
> example: 
> > should we keep the sentence: "Taking in consideration what 
> the cognitive 
> > power of a medium is might help us to distill the basics to 
> be described 
> > to achieve the widest coverage"? Or should be turn it into 
> something 
> > like: "Taking in consideration what the cognitive power of 
> a medium is 
> > enables to distill the basics to be described to achieve the widest 
> > coverage"?
> >    - Similarly, the text that describes the 3rd dimension 
> (the task) 
> > contains numerous questions. Would we like to keep them as 
> it is? It 
> > seems to me that the text should answer to these questions and not 
> > exposed to the reader of the document.
> >    - The last sentence of the 5th paragraph is ambiguous: 
> "The scope of 
> > the Media ontology 1.0 is limited to content description". 
> Do you mean 
> > the physical content? the semantic content? both?
> >    - What means DC at the end of the 6th paragraph? Is there some 
> > missing text? Is it a reference to the new working drafts 
> of Dublin Core 
> > that envisages to have wh* relationships? Furthermore, it would be 
> > interesting to detail which explicit relationships the standards 
> > mentioned (CIDOC, MPEG-7, WHOS, MF) allow. Is it possible 
> to precise them?
> >    - In the 6th paragraph: 'witout' -> without; 'connceted' 
-> connected
> > Furthermore, I suggest to rephrase the following sentence:
> > "making links or graphs to connect the different pieces of the 
> > annotation that belong together is very important for the 
> > precision/enhancing the search".
> >    - Is it a requirement of the Media Ontology to enable relation 
> > relationships?
> >    - The 7th paragraph contains numerous questions that I 
> guess should 
> > not be there but answered.
> > 
> > * Section 2.2: Media
> >    - Do we really consider all the media mentioned?
> >    - Providing examples would help to understand what do 
> you mean by 
> > 'static', 'interactive', 'fixed', 'mobile', 'realistic', 
> 'abstract', etc.
> >    - The authors say that "Queries need to be enabled to 
> search on the 
> > following dimensions:" but then I'm confused. The first two 
> dimensions 
> > are about the subject matter, the semantic content, which I 
> thought was 
> > address by the 2nd dimension (context). The 3rd one introduces the 
> > notion of form of the media. Why not then adding the genre, another 
> > component that is indispensable in EPG?
> > 
> > * Section 2.3: Context
> > The text ends abruptly, I guess there is some text missing.
> > 
> > * Section 2.4: Task
> >    - 'maintaining' -> maintain
> >    - Add a reference to the canonical processes
> > 
> > * Section 3.1: Video
> >    - Which video services sites are you considering? Video search 
> > engines? Video sharing web sites? I think they have different 
> > requirements ...
> >    - I do not understand the problem explained in the 2nd and 3rd 
> > paragraph. What is the task? I guess the task is not to 
> specify what an 
> > API should return for a particular command ... Getting the songs 
> > 'composed by' Dvorak? Then a full text search will work in 
> both cases.
> >    - I disagree with the NOTE, as I believe the aim of the Media 
> > Ontology is to solve the semantic mismatch between the 
> existing formats 
> > as much as possible.
> >    - The last paragraph also introduces bad practices. Do not split 
> > properties (first name, family name, etc.) but just use URIs for 
> > identifying resources, and you get them for free.
> >    - The requirements talked about "commonly used properties for 
> > describing video content, from these different standards". Is it 
> > possible to detail these properties that should be covered 
> by the Media 
> > Ontology?
> > 
> > * Section 3.2: Cultural Heritage
> >    - I like the description of the use case but I do not 
> understand what 
> > are the requirements. The requirements paragraph does not seem to 
> > exhibit any particular requirement, or at least, it is not 
> clear to me.
> > 
> > * Section 3.3: Mobile
> >    - 'foramts' -> formats
> >    - Interoperability with formats for identification on 
> the Web seems a 
> > requirement in this use case. Is it possible to list these formats?
> > 
> > * Section 3.4:
> >    - I don't understand what this use case is about. Is it about 
> > "Interoperability for IPTV"? I would then suggest this new title.
> >    - The authors said: "In MPEG-7, there are parts related to this 
> > problem". Which parts the authors refer to?
> > 
> > * Section 3.5: Tagging
> >    - I think this use case is partially out of scope. I 
> explained: the 
> > XG use case covers two sides of the coin. People tag on different 
> > platforms, and one concern would be to identify uniquely 
> these tags so 
> > that they can be reused cross platforms. I think this part 
> is out of 
> > scope for the Media Ontology, and some initiatives such as 
> TagCare deals 
> > with that problem! The other side of the coin is the 
> properties that 
> > allow the tagging such as the TAG ontology or MOAT. I think 
> the Media 
> > Ontology should be interoperable with MOAT.
> > 
> > * Section 3.6: Life Log
> >    - What is this use case about? Is it possible to 
> describe it in terms 
> > of the 3 dimensions (media, context, task) like the other use cases?
> > 
> > Hope that helps!
> > Best regards.
> > 
> >    Raphaël
> > 
> > -- 
> > 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 Monday, 10 November 2008 15:04:10 UTC