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Re: Content negotiation on bbc.co.uk/programmes

From: Yves Raimond <yves.raimond@gmail.com>
Date: Sun, 30 Jan 2000 09:08:42 +0000
Message-Id: <709220EC-EB89-46B4-B16C-CD2043BF1C50@gmail.com>
To: Nicholas Humfrey <nicholas.humfrey@bbc.co.uk>
Cc: Mischa Tuffield <mmt04r@ecs.soton.ac.uk>, "public-lod@w3.org" <public-lod@w3.org>
Hello!

I think the current behavior makes sense. The rdf document uri is  
the .rdf one. The persistent html document uri us the .html one. The  
slash uri is the uri of a document about the thing, and we content  
negotiate at that uri. We are investigating ading a content location  
http header to refer back to the persistent document uri for a given  
representation.

Cheers,
y


On 1 Jun 2009, at 15:25, Nicholas Humfrey <nicholas.humfrey@bbc.co.uk>  
wrote:

> Yes, I agree.
>
> I think we will probably change the document URI to ''.
>
>
> nick.
>
>
> On 01/06/2009 12:56, "Mischa Tuffield" <mmt04r@ecs.soton.ac.uk> wrote:
>
>> Hi Nick,
>>
>> I have just had a chance to have a look at the /programmes RDF, and  
>> yay, great
>> stuff !
>>
>> I have noticed some oddness w.r.t. the URIs you use, and I thought  
>> I would
>> point them out.
>>
>> So,
>>
>> when performing "rapper http://www.bbc.co.uk/programmes/b00kmgqy"
>>
>> All of your subject URIs for the triples describing the RDF  
>> document end with
>> .rdf (e.g. <http://www.bbc.co.uk/programmes/b00kmgqy.rdf> dc:created
>> "2009-05...." .)
>>
>> But given that you are conneg'ing on this URI
>> <http://www.bbc.co.uk/programmes/b00kmgqy>, I wonder whether the  
>> Subject URI
>> for your document should be <http://www.bbc.co.uk/programmes/ 
>> b00kmgqy> (sans
>> .rdf).
>>
>> When I curl the URI, I get back a 200, which makes me think that if  
>> get an RDF
>> document back that the triples to do with the Document itself have  
>> the same
>> URI as URI being conneg'ing.
>>
>> curl -I -H "Accept: application/rdf+xml"
>> http://www.bbc.co.uk/programmes/b00kmgqy
>>
>> For example :
>>
>> "If I was some sort of bot, I would ask BBC for the rdf+xml for the  
>> URI
>> http://www.bbc.co.uk/programmes/b00kmgqy.
>>
>> If I got some RDF back, I would do a query to find the primaryTopic  
>> of the RDF
>> document, by doing something like :
>>
>> select ?primaryTopic where { graph <http://www.bbc.co.uk/programmes/b00kmgqy 
>> >
>> { <http://www.bbc.co.uk/programmes/b00kmgqy> foaf:primaryTopic ? 
>> primaryTopic }
>> }
>>
>> And, as it stands I wouldn't get anything back for the graph URI  
>> and the
>> Subject URI of the foaf:primaryTopic dont match. "
>>
>>
>> I guess you could do a number of things here (not exhaustive in any  
>> sense of
>> the word):
>>
>> 1. Use "" for your Document URI in your RDF/XML
>>
>> 2. When connneg'ing use the appropriate 30X (30 something, can't  
>> recall of the
>> top of my head), which would redirect the client to the  
>> appropriate .rdf URI,
>> so that the baseURI of the RDF document, matches the Subject URIs  
>> in the
>> RDF/XML. If this were to be your favoured approach, it would be  
>> nice to see
>> some sort of "foaf:IsPrimaryTopicOf" type triple which pointed back  
>> to the
>> HTML page, something like :
>>
>> <http://www.bbc.co.uk/programmes/b006z6tc.rdf#programme>
>> foaf:IsPrimaryTopicOf <http://www.bbc.co.uk/programmes/b006z6tc> .
>>
>> where the object URI above is the URI for the HTML document on / 
>> programmes.
>>
>> Hope all is well and I hope this helps/makes sense,
>>
>> Mischa
>>
>> On 28 May 2009, at 17:16, Nicholas Humfrey wrote:
>>
>>> Hello,
>>>
>>> I am pleased to report that Content negotiation for RDF/XML has  
>>> now been
>>> enabled on bbc.co.uk/programmes.
>>>
>>> Example below.
>>>
>>> nick.
>>>
>>>
>>> rapper http://www.bbc.co.uk/programmes/b00kmgqy
>>> rapper: Parsing URI http://www.bbc.co.uk/programmes/b00kmgqy with  
>>> parser
>>> rdfxml
>>> rapper: Serializing with serializer ntriples
>>> <http://www.bbc.co.uk/programmes/b00kmgqy.rdf>
>>> <http://www.w3.org/2000/01/rdf-schema#label> "Description of the  
>>> episode
>>> 28/05/2009" .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy.rdf>
>>> <http://purl.org/dc/terms/created>
>>> "2009-05-21T02:04:26+01:00"^^<http://www.w3.org/2001/XMLSchema#dateTime 
>>> > .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy.rdf>
>>> <http://purl.org/dc/terms/modified>
>>> "2009-05-21T02:04:26+01:00"^^<http://www.w3.org/2001/XMLSchema#dateTime 
>>> > .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy.rdf>
>>> <http://xmlns.com/foaf/0.1/primaryTopic>
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme> .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
>>> <http://purl.org/ontology/po/Episode> .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://purl.org/dc/elements/1.1/title> "28/05/2009" .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://purl.org/ontology/po/short_synopsis> "Terry Wogan's award- 
>>> winning
>>> breakfast show. Includes Pause for Thought." .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://purl.org/ontology/po/medium_synopsis> "Includes A Pause  
>>> for Thought."
>>> .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://purl.org/ontology/po/microsite>
>>> <http://www.bbc.co.uk/radio2/shows/wogan/
>>> <http://www.bbc.co.uk/radio2/shows/wogan/> > .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://purl.org/ontology/po/masterbrand>
>>> <http://www.bbc.co.uk/radio2#service> .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://purl.org/ontology/po/genre>
>>> <http://www.bbc.co.uk/programmes/genres/music/classicpopandrock#genre 
>>> > .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://purl.org/ontology/po/genre>
>>> <http://www.bbc.co.uk/programmes/genres/music/easylisteningsoundtracksandmusi
>>> cals#genre> .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://purl.org/ontology/po/genre>
>>> <http://www.bbc.co.uk/programmes/genres/music/popandchart#genre> .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://purl.org/ontology/po/format>
>>> <http://www.bbc.co.uk/programmes/formats/discussionandtalk#format> .
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme>
>>> <http://purl.org/ontology/po/version>
>>> <http://www.bbc.co.uk/programmes/b00kmghg#programme> .
>>> <http://www.bbc.co.uk/programmes/b006z6tc#programme>
>>> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
>>> <http://purl.org/ontology/po/Brand> .
>>> <http://www.bbc.co.uk/programmes/b006z6tc#programme>
>>> <http://purl.org/ontology/po/episode>
>>> <http://www.bbc.co.uk/programmes/b00kmgqy#programme> .
>>> rapper: Parsing returned 17 triples
>>>
>>>
>>> http://www.bbc.co.uk
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>>
>>
>> _________________________________
>> Mischa Tuffield
>> ECS - http://www.ecs.soton.ac.uk <http://www.ecs.soton.ac.uk/>
>> Homepage - http://users.ecs.soton.ac.uk/mmt04r/
>> Identity - http://id.ecs.soton.ac.uk/person/6914
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
> http://www.bbc.co.uk/
> This e-mail (and any attachments) is confidential and may contain  
> personal views which are not the views of the BBC unless  
> specifically stated.
> If you have received it in error, please delete it from your system.
> Do not use, copy or disclose the information in any way nor act in  
> reliance on it and notify the sender immediately.
> Please note that the BBC monitors e-mails sent or received.
> Further communication will signify your consent to this.
>
>
Received on Monday, 1 June 2009 19:16:50 UTC

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