W3C home > Mailing lists > Public > public-lod@w3.org > September 2009

Re: ANN: BestBuy.com starts publishing full catalog as RDF/XML using GoodRelations - 27 million triples

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Tue, 01 Sep 2009 17:51:43 -0400
Message-ID: <4A9D976F.2050303@openlinksw.com>
To: martin.hepp@ebusiness-unibw.org
CC: Peter Ansell <ansell.peter@gmail.com>, "public-lod@w3.org" <public-lod@w3.org>
Martin Hepp (UniBW) wrote:
> [SNIP]
>
> Now, as for human-readable content: Each RDF/XML representation links 
> to the proper human-readable representation via rdfs:seeAlso, e.g. to
>
> http://www.bestbuy.com/site/olspage.jsp?skuId=8182593&type=product&id=1164154035835&cmp=RMX&ky=1whYTIhnZ0ydleik4tkW4Z7Fn1kPFrBgb 
>
>
> I fail to see how and rdfs:seeAlso is worse than a 303 redirect - 
> which is hard to implement and maintain on a large-scale corporate Web 
> site (see recent .htaccess discussions on this list).
>
> Currently, the human-readable pages, e.g.
>
> http://www.bestbuy.com/site/olspage.jsp?skuId=8182593&type=product&id=1164154035835&cmp=RMX&ky=1whYTIhnZ0ydleik4tkW4Z7Fn1kPFrBgb 
>
>
> don't have a META element in their header that would link to the 
> RDF/XML representation. That would be an improvement. It should 
> actually be sufficient to insert
>
> <link rel="meta" title="RDF based Metadata in RDF/XML format" 
> type="application/rdf+xml" 
> href="http://linkeddata.uriburner.com/about/id/<this-page-URL>"
The pattern above has evolved, so its more accurate to say the following 
re. metadata bearing information resource URLs:


<link rel="meta" title="RDF based Metadata in RDF/XML format" 
type="application/rdf+xml" 
href="http://linkeddata.uriburner.com/about/id/<scheme>/<authority>/<resource-path-and-or-query-param>" 


Examples (based on the Slash based proxy based Generic HTTP URI scheme 
of URIBurner service):

HTML+RDFa based Metadata bearing Information Resource URL:

curl -I -H "Accept: application/rdf+json" 
"http://linkeddata.uriburner.com/about/id/http/www.bestbuycom/site/olspage.jsp?skuId=9491935&type=product&id=1218115079278"
HTTP/1.1 303 See Other
Server: Virtuoso/05.11.3040 (Solaris) x86_64-sun-solaris2.10-64  VDB
Connection: close
Content-Type: text/html; charset=ISO-8859-1
Date: Tue, 01 Sep 2009 21:41:52 GMT
Accept-Ranges: bytes
Location: 
http://linkeddata.uriburner.com/about/html/http/www.bestbuy.com/site/olspage.jsp?skuId=9491935&type=product&id=1218115079278
Content-Length: 13

N3 based Metadata bearing Information Resource URL:

curl -I -H "Accept: text/n3" 
"http://linkeddata.uriburner.com/about/id/http/www.bestbuy.com/site/olspage.jsp?skuId=9491935&type=product&id=1218115079278"
HTTP/1.1 303 See Other
Server: Virtuoso/05.11.3040 (Solaris) x86_64-sun-solaris2.10-64  VDB
Connection: close
Date: Tue, 01 Sep 2009 21:38:44 GMT
Accept-Ranges: bytes
TCN: choice
Vary: negotiate,accept
Content-Location: 
/about/data/nt/http/www.bestbuy.com/site/olspage.jsp?skuId=9491935%26type=product%26id=1218115079278
Content-Type: text/n3; qs=0.8
Location: 
http://linkeddata.uriburner.com/about/data/nt/http/www.bestbuy.com/site/olspage.jsp?skuId=9491935%26type=product%26id=1218115079278
Content-Length: 13

RDF/XML based Metadata bearing Information Resource URL:

curl -I -H "Accept: application/rdf+xml" 
"http://linkeddata.uriburner.com/about/id/http/www.bestbuy.com/site/olspage.jsp?skuId=9491935&type=product&id=1218115079278"
HTTP/1.1 303 See Other
Server: Virtuoso/05.11.3040 (Solaris) x86_64-sun-solaris2.10-64  VDB
Connection: close
Date: Tue, 01 Sep 2009 21:33:23 GMT
Accept-Ranges: bytes
TCN: choice
Vary: negotiate,accept
Content-Location: 
/about/data/xml/http/www.bestbuy.com/site/olspage.jsp?skuId=9491935%26type=product%26id=1218115079278
Content-Type: application/rdf+xml; qs=0.95
Location: 
http://linkeddata.uriburner.com/about/data/xml/http/www.bestbuy.com/site/olspage.jsp?skuId=9491935%26type=product%26id=1218115079278
Content-Length: 13

Note:  rdf+json and turtle content-type handling is being fixed 
(currently not honoring content negotiation properly). We'll be updating 
the notes at <http://uriburner.com> accordingly.


>
> Also, it should be easy for an intelligent agent or tools like 
> URIburner to search for graphs that are related to a given 
> human-readable resource.
Yes, URIBurner performs LOD cloud lookups amongst other things .
>
> Simply query e.g. the LOD/LOC dataspace at
>
> http://loc.openlinksw.com/sparql
>
> for all graphs that contain at least one triple of the form
>
> * rdfs:seeAlso <URI-of-current-page>
Basically, URIBurner is just an instance of the Virtuoso Sponger, so the 
patterns that apply to the URIBurner instance also apply to the LOD 
Cloud Cache at: http://lod.openlinksw.com (now that sponging is 
enabled), or any Virtuoso instance (public or private).

Kingsley
>
>
>
> Best
> Martin
>> Cheers,
>>
>> Peter
>>
>>   
>


-- 


Regards,

Kingsley Idehen	      Weblog: http://www.openlinksw.com/blog/~kidehen
President & CEO 
OpenLink Software     Web: http://www.openlinksw.com
Received on Tuesday, 1 September 2009 21:52:19 UTC

This archive was generated by hypermail 2.3.1 : Sunday, 31 March 2013 14:24:23 UTC