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Re: How RFC 5988 Link Relation fits Linked Data?

From: Stian Soiland-Reyes <soiland-reyes@cs.manchester.ac.uk>
Date: Wed, 5 Nov 2014 21:52:31 +0000
Message-ID: <CAPRnXtnZeXD8wK8Vxf5mSoM_Oxm-KU4moTmEezsCRZYA5dFFBQ@mail.gmail.com>
To: ☮ elf Pavlik ☮ <perpetual-tripper@wwelves.org>
Cc: "semantic-web@w3.org >> semantic-web@w3.org" <semantic-web@w3.org>
I can't speak for ActivityStreams (glad they sorted that namespace in
later drafts..:) , but in PROV we used Link relations as an
alternative to a triple, expressed in HTTP headers.


In particular we wanted to say prov:has_provenance with the retrieved
resource as a subject.

http://www.w3.org/TR/2013/NOTE-prov-aq-20130430/#resource-accessed-by-http

S: HTTP/1.1 200 OK
S: Content-type: text/html
S: Link: <http://example.com/resource123/provenance/>;
         rel="http://www.w3.org/ns/prov#has_provenance";
         anchor="http://example.com/resource123/"

as equivalent to:

<> dcterms:title        "Welcome to example.com" ;
   prov:has_anchor       <http://example.com/data/resource.rdf> ;
   prov:has_provenance   <http://example.com/provenance/resource.rdf> .

in http://www.w3.org/TR/2013/NOTE-prov-aq-20130430/#resource-represented-as-rdf




On 1 November 2014 18:19, ☮ elf Pavlik ☮ <perpetual-tripper@wwelves.org> wrote:
> Hello,
>
> I would like to ask for help with clarifying use of RFC 5988 Link
> Relation in context of Linked Data.
>
> In Activity Streams 2.0, which very recently became WPWD, we currently find:
>
> * as:Link - Describes a link to a separate resource.
>   http://www.w3.org/TR/2014/WD-activitystreams-vocabulary-20141023/#dfn-link
> * as:rel - The RFC 5988 Link Relation associated with a Link.
>   http://www.w3.org/TR/2014/WD-activitystreams-vocabulary-20141023/#dfn-rel
>
> With some examples of their use available in:
> http://www.w3.org/TR/2014/WD-activitystreams-core-20141023/#link
>
> I must admit that their usage don't feel intuitive to me, at least from
> my relatively short experience of working with Linked Data. I would
> appreciate any help with clarifying how RFC 5988 Link Relation fits
> world of Linked Data.
>
> I also just noticed seemingly relevant issue in Mark Nottingham's
> Internet-Drafts repository: https://github.com/mnot/I-D/issues/39
> As well as this article from 2011:
> https://www.mnot.net/blog/2011/11/25/linking_in_json
>
> Thank you in advance!
>



-- 
Stian Soiland-Reyes, myGrid team
School of Computer Science
The University of Manchester
http://soiland-reyes.com/stian/work/ http://orcid.org/0000-0001-9842-9718
Received on Wednesday, 5 November 2014 21:53:20 UTC

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