W3C home > Mailing lists > Public > semantic-web@w3.org > December 2005

Re: Photos, Album and RDF

From: Russell Duhon <fugu13@mac.com>
Date: Tue, 20 Dec 2005 11:24:13 -0500
Message-Id: <00316990-FEDC-452D-B48D-056FDED0F9CA@mac.com>
Cc: semantic-web@w3.org
To: Karl Dubost <karl@w3.org>

I'd maintain the URIs as just the flickr URIs (actually, I might even  
go further, ditch the URIs, and use a flickr:flickrLocation (or  
whatever) inverse functional property), and add a property. Call it  
flickr:localLocation or somesuch, and point it at the relative path.

A subclass of dcterms:relation would likely be appropriate; perhaps  
one of the existing subclasses or a new subclass.

If your issue is with not having access to flickr to determine its  
URI for that pic, leave the pic anonymous. Someone can fill that  
detail in later if it feels necessary.

I'm discovering more and more that flexible RDF involves using  
anonymous instance nodes instead of choosing URIs. Doing so avoids  
messy situations, like those that crop up when Flickr changes its URI  
scheme ;-) . Inverse functional properties allows you to merely add  
another instance of flickrLocation pointing to the new location as  
you come across each instance's new flickr location, and then a basic  
reasoner will automatically know that all the instances with that  
flickrLocation are the same instance.

If you rely on ID URIs to point at something, you're setting up a  
fragile system, even if you control the URIs; Its sometimes  
extraordinarily difficult to not change URIs when you change an  
internet application. And if you don't control the URIs and they  
change, or if there's more than one possible URI (such as how I can  
delete the www. from many of your URIs, which would prevent an  
application from easily reasoning that something I reference is the  
same as what you reference; this would be solved by providing two  
flickrLocation values), things start going a bit screwier.

Russell

On Dec 20, 2005, at 1:10 AM, Karl Dubost wrote:

>
> Hi,
>
> [Aaron Straup Cope][1] has released a while ago a program to make  
> an [RDF dump][2] for a photograph backep up on Flickr.
>
> Basically in the RDF Dump given here there is
>
> a photo
> 	- is on a webpage.
> 	- has comments
> 	- has tags
> 	- has notes
> 	- belongs to groups (album)
> 	- has technical details
>
> I was thinking that maybe a simplification would be to have  
> something like for FoafCorp.
>
> photo001.rdf -> group1.rdf, group2.rdf, …
> photo002.rdf -> group2.rdf, group10.rdf, …
>
> and
>
> group1.rdf -> photo001.rdf
> group2.rdf -> photo001.rdf, photo002.rdf
> …
> group10.rdf -> photo002.rdf
>
>
> But I was wondering how this would work at the same time on the web  
> and locally.
>
> 	rdf:about="../../groups/group1.rdf"
> versus
> 	rdf:about="http://example.org/groups/group1.rdf"
>
>
> If I fetch one photo file how can I deference the file  locally  
> when I'm not connected and I have a path more than a URI.
>
>
> [1] http://www.aaronland.info/weblog
> [2] http://search.cpan.org/~ascope/Net-Flickr-RDF-1.5/lib/Net/ 
> Flickr/RDF.pm#RDF
>
>
> This is an example of a dump.
>
> <?xml version='1.0'?>
> <rdf:RDF
>    xmlns:dc="http://purl.org/dc/elements/1.1/"
>    xmlns:a="http://www.w3.org/2000/10/annotation-ns"
>    xmlns:acl="http://www.w3.org/2001/02/acls#"
>    xmlns:exif="http://nwalsh.com/rdf/exif#"
>    xmlns:skos="http://www.w3.org/2004/02/skos/core#"
>    xmlns:foaf="http://xmlns.com/foaf/0.1/"
>    xmlns:exifi="http://nwalsh.com/rdf/exif-intrinsic#"
>    xmlns:cc="http://web.resource.org/cc/"
>    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
>    xmlns:flickr="x-urn:flickr:"
>    xmlns:dcterms="http://purl.org/dc/terms/"
>    xmlns:i="http://www.w3.org/2004/02/image-regions#">
>
>   <flickr:photo rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528">
>     <exif:isoSpeedRatings>1250</exif:isoSpeedRatings>
>     <exif:apertureValue>336/100</exif:apertureValue>
>     <exif:pixelYDimension>960</exif:pixelYDimension>
>     <exif:focalLength>4.5 mm</exif:focalLength>
>     <acl:access>visbility</acl:access>
>     <exif:colorSpace>sRGB</exif:colorSpace>
>     <exif:dateTimeOriginal>2005:08:02 18:12:19</exif:dateTimeOriginal>
>     <exif:shutterSpeedValue>4321/1000</exif:shutterSpeedValue>
>     <dc:description></dc:description>
>     <exif:exposureTime>0.05 sec (263/5260)</exif:exposureTime>
>     <dc:created>2005-08-02T18:12:19-0700</dc:created>
>     <dc:dateSubmitted>2005-08-02T18:16:20-0700</dc:dateSubmitted>
>     <exif:gainControl>High gain up</exif:gainControl>
>     <exif:flash>32</exif:flash>
>     <exif:digitalZoomRatio>100/100</exif:digitalZoomRatio>
>     <exif:pixelXDimension>1280</exif:pixelXDimension>
>     <exif:dateTimeDigitized>2005:08:02 18:12:19</ 
> exif:dateTimeDigitized>
>     <dc:title>20050802(007).jpg</dc:title>
>     <exif:fNumber>f/3.2</exif:fNumber>
>     <acl:accessor>public</acl:accessor>
>     <cc:license rdf:resource="http://creativecommons.org/licenses/ 
> by-nd/2.0/"/>
>     <dc:creator rdf:resource="http://www.flickr.com/people/ 
> 35034348999@N01"/>
>     <dc:subject rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/tags/usa"/>
>     <dc:subject rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/tags/california"/>
>     <dc:subject rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/tags/sanfrancisco"/>
>     <dc:subject rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/tags/cameraphone"/>
>     <dcterms:isPartOf rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/sets/1082058"/>
>     <dcterms:isPartOf rdf:resource="http://www.flickr.com/groups/ 
> 97155967@N00/pool"/>
>     <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1140939"/>
>     <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1140942"/>
>     <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1140945"/>
>     <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1140946"/>
>     <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1140952"/>
>     <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1142648"/>
>     <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1142656"/>
>     <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1143239"/>
>     <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1148950"/>
>   </flickr:photo>
>
>   <flickr:note rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1140942">
>     <i:boundingBox>468 141 22 26</i:boundingBox>
>     <a:body>*sigh*</a:body>
>     <i:regionDepicts rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285.jpg"/>
>     <a:author rdf:resource="http://www.flickr.com/people/ 
> 44124415257@N01"/>
>     <a:annotates rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </flickr:note>
>
>   <flickr:tag rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/tags/usa">
>     <skos:prefLabel>usa</skos:prefLabel>
>     <dc:creator rdf:resource="http://www.flickr.com/people/ 
> 35034348999@N01"/>
>     <dcterms:isPartOf rdf:resource="http://www.flickr.com/tags/usa"/>
>   </flickr:tag>
>
>   <dcterms:StillImage rdf:about="http://static.flickr.com/ 
> 23/30763528_a981fab285_s.jpg">
>     <dcterms:relation>Square</dcterms:relation>
>     <exifi:height>75</exifi:height>
>     <exifi:width>75</exifi:width>
>     <dcterms:isVersionOf rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285_o.jpg"/>
>     <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </dcterms:StillImage>
>
>   <flickr:tag rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/tags/california">
>     <skos:prefLabel>california</skos:prefLabel>
>     <dc:creator rdf:resource="http://www.flickr.com/people/ 
> 35034348999@N01"/>
>     <dcterms:isPartOf rdf:resource="http://www.flickr.com/tags/ 
> california"/>
>   </flickr:tag>
>
>   <flickr:note rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1142656">
>     <i:boundingBox>357 193 81 28</i:boundingBox>
>     <a:body>eww!</a:body>
>     <i:regionDepicts rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285.jpg"/>
>     <a:author rdf:resource="http://www.flickr.com/people/ 
> 32373682187@N01"/>
>     <a:annotates rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </flickr:note>
>
>   <flickr:user rdf:about="http://www.flickr.com/people/ 
> 44124415257@N01">
>     <foaf:mbox_sha1sum>4f6f211958d5217ef0d10f7f5cd9a69cd66f217e</ 
> foaf:mbox_sha1sum>
>     <foaf:name>Karl Dubost</foaf:name>
>     <foaf:nick>karlcow</foaf:nick>
>   </flickr:user>
>
>   <flickr:note rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1140939">
>     <i:boundingBox>326 181 97 25</i:boundingBox>
>     <a:body>Did you see that this shirt makes me a beautiful breast? 
> </a:body>
>     <i:regionDepicts rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285.jpg"/>
>     <a:author rdf:resource="http://www.flickr.com/people/ 
> 44124415257@N01"/>
>     <a:annotates rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </flickr:note>
>
>   <flickr:note rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1140952">
>     <i:boundingBox>9 205 145 55</i:boundingBox>
>     <a:body>Do you want my opinion? There's a love affair going on  
> here… Anyway. Talking non sense. We all know Heather is committed  
> to Flickr. She even only dresses at FlickrApparel. Did they say  
> &amp;quot;No Logo&amp;quot;. Doh Dude.</a:body>
>     <i:regionDepicts rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285.jpg"/>
>     <a:author rdf:resource="http://www.flickr.com/people/ 
> 44124415257@N01"/>
>     <a:annotates rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </flickr:note>
>
>   <dcterms:StillImage rdf:about="http://static.flickr.com/ 
> 23/30763528_a981fab285_m.jpg">
>     <dcterms:relation>Small</dcterms:relation>
>     <exifi:height>180</exifi:height>
>     <exifi:width>240</exifi:width>
>     <dcterms:isVersionOf rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285_o.jpg"/>
>     <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </dcterms:StillImage>
>
>   <flickr:photoset rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/sets/1082058">
>     <dc:description></dc:description>
>     <dc:title>Flickr</dc:title>
>     <dc:creator rdf:resource="http://www.flickr.com/people/ 
> 35034348999@N01"/>
>   </flickr:photoset>
>
>   <flickr:user rdf:about="http://www.flickr.com/people/ 
> 34427469121@N01">
>     <foaf:mbox_sha1sum>216d56f03517c68e527c5b970552a181980c4389</ 
> foaf:mbox_sha1sum>
>     <foaf:name>George Oates</foaf:name>
>     <foaf:nick>George</foaf:nick>
>   </flickr:user>
>
>   <flickr:note rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1140946">
>     <i:boundingBox>355 31 103 95</i:boundingBox>
>     <a:body>(Yes… I love you heather, you are my dream star)</ 
> a:body>
>     <i:regionDepicts rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285.jpg"/>
>     <a:author rdf:resource="http://www.flickr.com/people/ 
> 44124415257@N01"/>
>     <a:annotates rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </flickr:note>
>
>   <rdf:Description rdf:about="x-urn:flickr:tag">
>     <rdfs:subClassOf rdf:resource="http://www.w3.org/2004/02/skos/ 
> core#Concept"/>
>   </rdf:Description>
>
>   <flickr:note rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1143239">
>     <i:boundingBox>184 164 50 50</i:boundingBox>
>     <a:body>Baaaaarp!</a:body>
>     <i:regionDepicts rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285.jpg"/>
>     <a:author rdf:resource="http://www.flickr.com/people/ 
> 34427469121@N01"/>
>     <a:annotates rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </flickr:note>
>
>   <dcterms:StillImage rdf:about="http://static.flickr.com/ 
> 23/30763528_a981fab285_t.jpg">
>     <dcterms:relation>Thumbnail</dcterms:relation>
>     <exifi:height>75</exifi:height>
>     <exifi:width>100</exifi:width>
>     <dcterms:isVersionOf rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285_o.jpg"/>
>     <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </dcterms:StillImage>
>
>   <flickr:note rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1140945">
>     <i:boundingBox>433 103 50 50</i:boundingBox>
>     <a:body>(fuck… fuck…)</a:body>
>     <i:regionDepicts rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285.jpg"/>
>     <a:author rdf:resource="http://www.flickr.com/people/ 
> 44124415257@N01"/>
>     <a:annotates rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </flickr:note>
>
>   <flickr:tag rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/tags/sanfrancisco">
>     <skos:prefLabel>san francisco</skos:prefLabel>
>     <skos:altLabel>sanfrancisco</skos:altLabel>
>     <dc:creator rdf:resource="http://www.flickr.com/people/ 
> 35034348999@N01"/>
>     <dcterms:isPartOf rdf:resource="http://www.flickr.com/tags/ 
> sanfrancisco"/>
>   </flickr:tag>
>
>   <flickr:user rdf:about="http://www.flickr.com/people/ 
> 32373682187@N01">
>     <foaf:mbox_sha1sum>62bf10c8d5b56623226689b7be924c64dee5e94a</ 
> foaf:mbox_sha1sum>
>     <foaf:name>heather powazek champ</foaf:name>
>     <foaf:nick>heather</foaf:nick>
>   </flickr:user>
>
>   <rdf:Description rdf:about="x-urn:flickr:user">
>     <rdfs:subClassOf rdf:resource="http://xmlns.com/foaf/0.1/Person"/>
>   </rdf:Description>
>
>   <flickr:grouppool rdf:about="http://www.flickr.com/groups/ 
> 97155967@N00/pool">
>     <dcterms:isPartOf rdf:resource="http://www.flickr.com/groups/ 
> 97155967@N00"/>
>   </flickr:grouppool>
>
>   <dcterms:StillImage rdf:about="http://static.flickr.com/ 
> 23/30763528_a981fab285.jpg">
>     <dcterms:relation>Medium</dcterms:relation>
>     <exifi:height>375</exifi:height>
>     <exifi:width>500</exifi:width>
>     <dcterms:isVersionOf rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285_o.jpg"/>
>     <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </dcterms:StillImage>
>
>   <flickr:note rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1142648">
>     <i:boundingBox>202 224 50 50</i:boundingBox>
>     <a:body>dude! who did this?</a:body>
>     <i:regionDepicts rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285.jpg"/>
>     <a:author rdf:resource="http://www.flickr.com/people/ 
> 32373682187@N01"/>
>     <a:annotates rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </flickr:note>
>
>   <flickr:group rdf:about="http://www.flickr.com/groups/97155967@N00">
>     <dc:description></dc:description>
>     <dc:title>aaronland</dc:title>
>   </flickr:group>
>
>   <cc:License rdf:about="http://creativecommons.org/licenses/by-nd/ 
> 2.0/">
>     <cc:requires rdf:resource="http://web.resource.org/cc/Notice"/>
>     <cc:requires rdf:resource="http://web.resource.org/cc/ 
> Attribution"/>
>     <cc:requires rdf:resource="http://web.resource.org/cc/ 
> ShareAlike"/>
>     <cc:permits rdf:resource="http://web.resource.org/cc/ 
> Reproduction"/>
>     <cc:permits rdf:resource="http://web.resource.org/cc/ 
> Distribution"/>
>   </cc:License>
>
>   <dcterms:StillImage rdf:about="http://static.flickr.com/ 
> 23/30763528_a981fab285_o.jpg">
>     <dcterms:relation>Original</dcterms:relation>
>     <exifi:height>960</exifi:height>
>     <exifi:width>1280</exifi:width>
>     <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </dcterms:StillImage>
>
>   <flickr:tag rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/tags/cameraphone">
>     <skos:prefLabel>cameraphone</skos:prefLabel>
>     <dc:creator rdf:resource="http://www.flickr.com/people/ 
> 35034348999@N01"/>
>     <dcterms:isPartOf rdf:resource="http://www.flickr.com/tags/ 
> cameraphone"/>
>   </flickr:tag>
>
>   <flickr:user rdf:about="http://www.flickr.com/people/ 
> 35034348999@N01">
>     <foaf:mbox_sha1sum>a4d1b5e38db5e2ed4f847f9f09fd51cf59bc0d3f</ 
> foaf:mbox_sha1sum>
>     <foaf:name>Aaron</foaf:name>
>     <foaf:nick>straup</foaf:nick>
>   </flickr:user>
>
>   <flickr:note rdf:about="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528#note-1148950">
>     <i:boundingBox>342 197 28 33</i:boundingBox>
>     <a:body>Is that just one big boob, or...?</a:body>
>     <i:regionDepicts rdf:resource="http://static.flickr.com/ 
> 23/30763528_a981fab285.jpg"/>
>     <a:author rdf:resource="http://www.flickr.com/people/ 
> 34427469121@N01"/>
>     <a:annotates rdf:resource="http://www.flickr.com/photos/ 
> 35034348999@N01/30763528"/>
>   </flickr:note>
>
>   <rdf:Description rdf:about="x-urn:flickr:note">
>     <rdfs:subClassOf rdf:resource="http://www.w3.org/2000/10/ 
> annotation-nsAnnotation"/>
>   </rdf:Description>
>
> </rdf:RDF>
>
> -- 
> Karl Dubost - http://www.w3.org/People/karl/
> W3C Conformance Manager, QA Activity Lead
> *** Be Strict To Be Cool ***
>
>
>
>
>
Received on Tuesday, 20 December 2005 19:59:54 GMT

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