Jeremy, are you not using HTTP URIs with UUIDs as the local part, as in
BBC Sports, Music, etc.?
Barry
On 23/01/13 08:53, Gregg Kellogg wrote:
On Jan 23, 2013, at 9:27 AM, Jeremy Tarling <[email protected]> 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="<http://www.bbc.co.uk/news>"/>
…
</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="<http://www.bbc.co.uk/news>"/>
<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
