W3C home > Mailing lists > Public > public-lod@w3.org > February 2010

Re: Linking HTML pages and data

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Tue, 16 Feb 2010 10:12:50 -0500
Message-ID: <4B7AB5F2.7030409@openlinksw.com>
To: Sean Bechhofer <sean.bechhofer@manchester.ac.uk>
CC: public-lod@w3.org
Sean Bechhofer wrote:
> LODders
> A simple (possibly dumb) question. Is there a standard mechanism for 
> linking an HTML page to the non-information resource that it describes?
> For example, in the page
> <http://dbpedia.org/page/Mogwai_(band)>
> I see a number of <link> elements in the header that point me to 
> alternate representations (rdf, json etc).  There's nothing in the 
> header that points me to *<http://dbpedia.org/resource/Mogwai_(band)>* 
> (as far as I can tell) though. There is an "about" attribute on the 
> body that does so:
> <body onload="init();" about="http://dbpedia.org/resource/Mogwai_(band)">
> ...
> In contrast, if I look at the page for the band on the BBC, i.e.
> <http://www.bbc.co.uk/music/artists/d700b3f5-45af-4d02-95ed-57d301bda93e>
> there seems to be no reference at all to the non-information resource
> <http://www.bbc.co.uk/music/artists/d700b3f5-45af-4d02-95ed-57d301bda93e#artist> 
> which is the "subject" of the page.
> Any conventions in operation here?
Well the practice (ideally) is to use <link/> to expose relationships 
between Web resources. If you sorta drop the Resource and Non 
Information Resource dichotomy and think about two things (Docs are 
things too) then <link/> is your very best friend :-)

Re. the BBC, and many other publishers of HTML or RDF docs, there is 
still a tendency to overlook this vital auto-discovery pattern for HTTP 
user agents. This problem stems from aRDF legacy issues e.g. having 
triples in RDF docs that don't include any relations with their host 
container (the doc) or vice versa.


1. http://tools.ietf.org/html/draft-nottingham-http-link-header-06  --- 
RFC covering LINK without any notion of Information Resource that 
doesn't break anything.

> Thanks,
>     Sean
> -- 
> Sean Bechhofer
> School of Computer Science
> University of Manchester
> sean.bechhofer@manchester.ac.uk
> http://www.cs.manchester.ac.uk/people/bechhofer



Kingsley Idehen	      
President & CEO 
OpenLink Software     
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen 
Received on Tuesday, 16 February 2010 15:13:19 UTC

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