W3C home > Mailing lists > Public > public-lod@w3.org > January 2013

Re: rNews RDFa in BBC News

From: Gregg Kellogg <gregg@greggkellogg.net>
Date: Wed, 23 Jan 2013 03:53:11 -0500
To: Jeremy Tarling <jeremy.tarling@bbc.co.uk>
CC: "public-lod@w3.org" <public-lod@w3.org>
Message-ID: <7D42EAD1-5D7C-43E8-8A4D-ECC122111E24@greggkellogg.net>
On Jan 23, 2013, at 9:27 AM, Jeremy Tarling <jeremy.tarling@bbc.co.uk> wrote:

> Hello all
> 
> I am working with BBC News on implementing some RDFa in article pages on 
> http://www.bbc.co.uk/news. rNews seems like the best candidate for us in 
> terms of expressiveness and wider adoption, so I am thinking, as a first 
> iteration, we will add something like this to article pages:
> 
> <head prefix="rnews: http://iptc.org/std/rNews/2011-10-07#"
> resource="{published URL}"
> typeof="rnews:NewsItem">
> <meta property="rnews:headline" content="{headline}"/>
> <meta property="rnews:description" content="{description}"/>
> <meta property="rnews:thumbnailUrl" content="{thumbnail URL}"/>
> <meta property="rnews:datePublished" content="{date published}"/>
> <meta property="rnews:creator" content=">"/>
> 
> </head>
> 
> We are currently working on an internal project to identify the 
> real-world concepts mentioned in our stories and associate them back 
> with the published article; when this is available we will add the 
> following:
> 
> <meta property="rnews:about" content="{GUID for 
> person/place/organisation}"/>
> <meta property="rnews:mentions" content="{GUID for 
> person/place/organisation} "/>
> 
> Separately we will publish the BBC GUIDs we have created for 
> person/place/organisations with sameAs links towikidata/freebase/dbpedia.
> 
> Does anyone see any problems with this approach?

If the GUID and and thumbnailURL objects are intend to be IRIs, you should use <link> instead of <meta>. The <content> element is only used for literal values. Try the following:

<head prefix="rnews: http://iptc.org/std/rNews/2011-10-07#"
resource="{published URL}"
typeof="rnews:NewsItem">
<meta property="rnews:headline" content="{headline}"/>
<meta property="rnews:description" content="{description}"/>
<link property="rnews:thumbnailUrl" resource="{thumbnail URL}"/>
<meta property="rnews:datePublished" content="{date published}"/>
<link property="rnews:creator" resource=">"/>
<link property="rnews:about" resource="{GUID for person/place/organisation}"/>
< link property="rnews:mentions" resource="{GUID for person/place/organisation} "/>
</head>

(Note, you could use @href instead of @resource, but technically the value range of @href is URL, not IRI, so a GUID (expressed as a URN) wouldn't be valid).

Of course, if the about and mentions properties DatatypeProperties rather than ObjectProperties, the use of <meta> and @content is fine, but you might want to consider providing an appropriate datatype with @datatype.

Gregg

> Thanks
> 
> JT
> 
> -------
> Jeremy Tarling
> Data Architect, BBC News
> 4th Floor New Broadcasting House
> London W1A 1AA
> 
> 
> 
Received on Wednesday, 23 January 2013 08:53:56 UTC

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