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Comments on LCWDs ref. POWDER

From: Phil Archer <phil@philarcher.org>
Date: Fri, 18 Jun 2010 15:07:40 +0100
Message-ID: <4C1B7DAC.3030201@philarcher.org>
To: public-media-annotation@w3.org
CC: Public POWDER <public-powderwg@w3.org>
Hi Thierry, everyone,

You asked for review of your LCWDs from a POWDER perspective. IU've 
taken a look at both documents and don't have any substantive comments 
on either since they are some distance removed from what POWDER was 
designed to do (which is good because it means there's been no pointless 
duplication of effort!).

The document that perhaps has most relevance is your Ontology for Media 
Resources. You might consider adding a short section in the manner that 
was done for mobileOK [1], or elsewhere in your group output, to show 
how a publisher can easily apply terms from the ontology to multiple 
resources. Recall that a key feature of POWDER is its ability to derive 
semantic meaning from URIs that are otherwise completely "dumb" from a 
machine's perspective.

For example, a human would have no difficulty interpreting this URI

http://example.com/movies/sci-fi/

as being the base for perhaps a whole catalogue of science fiction 
films. Specific URIs might then be:

http://example.com/movies/sci-fi/alien.mpg
http://example.com/movies/sci-fi/aliens.mpg
http://example.com/movies/sci-fi/alient3.mpg
http://example.com/movies/sci-fi/alienresurrection.wmv
http://example.com/movies/sci-fi/bladerunner.mov

A POWDER document could be constructed to make various assertions about 
these films available to Semantic Web clients>

<?xml version="1.0"?>
<powder xmlns="http://www.w3.org/2007/05/powder#"
         xmlns:ma="http://www.w3.org/ns/ma-ont#">

   <attribution>
     <issuedby src="http://example.com/company.rdf#me" />
     <issued>2007-12-14T00:00:00</issued>
   </attribution>

   <dr>
     <iriset>
       <includehosts>example.com</includehosts>
       <includepathstartswith>/movies/sci-fi/</includepathstartswith>
     </iriset>

     <descriptorset>
       <ma:genre src="http://example.com/ontology.rdf#sf />
       <ma:publisher src="http://example.com/company.rdf#me" />
       <displaytext>Movies in this section of the website are all
       in the science fiction genre</displaytext>
        <displayicon src="http://example.com/sf-icon.png" />
      </descriptorset>
    </dr>
</powder>

You can add in further description resources to say things about all the 
  Alien films, or all those that end in .mpg. Given this information a 
POWDER processor can return triples that describe specific URIs.

HTH

Phil


[1] http://www.w3.org/TR/mobileOK/#sec_mobileOK_Labels


-- 

Phil Archer
http://philarcher.org/
@philarcher1

i-sieve Technologies                   |      W3C
Sentiment Analysis Beyond Impressions  |      Mobile Web Initiative
http://i-sieve.com                     |      http://www.w3.org/Mobile
Received on Friday, 18 June 2010 14:08:18 GMT

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