W3C home > Mailing lists > Public > public-rdf-wg@w3.org > August 2012

Re: JSON-LD terminology

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Fri, 31 Aug 2012 08:06:27 -0400
Message-ID: <5040A8C3.8040800@openlinksw.com>
To: public-rdf-wg@w3.org
On 8/31/12 7:51 AM, Andy Seaborne wrote:
> On 31/08/12 12:29, Kingsley Idehen wrote:
>> It claims any RDF document is a Linked Data document. That simply isn't
>> accurate. The RDF spec makes no claims about IRIs being:
>> 1. de-referencable
>> 2. http: scheme based.
> Let's talk about what the document actually says in section 3.1 and 
> not make comments about political opinion and what one "ideal world" 
> might look like.
> The document says:
> [[
> 7. IRIs used within a linked data graph SHOULD be dereferenceable to a 
> Linked Data document describing the resource denoted by that IRI.
> ]]
> In reality, not all IRIs are going to be dereferencable.
> The condition should be "potentially dereferencable" because the 
> burden is far too high otherwise.
> We all might think it is a good idea but I for one am not going to 
> condemn a data publisher if it uses another scheme or has not put up a 
> document at some URI at the time of publication.  The publisher might 
> have very good reasons for it.

Not disputing any of that. My issue is that none of the above justifies 
conflating RDF and Linked Data.

> From experience, this is impractical anyway because you can loose 
> control of a URI space.  URIs live on.

Yes, but the URI/URL address space isn't as important as the actual 
*denotation* an *indirection* functionality delivered by generic Linked 
Data URIs. This is why (of late) I've been publishing notes about sample 
Turtle document [1] that demonstrate how Linked Data can be deployed in 
a manner that showcases the power of entity names over entity 
description document addresses, without burdening document publishers 
with any of the following:

1. domain ownership
2. dns server access with admin privileges
3. web server ownership
4. web server access with admin privileges
5. URI style choices for entity name/ description document address 

> JSON-LD does not mention http: schemes and is not limited to them. 
> http: is highly desirable but not necessary.

But I am talking about the RDF side of things here; specifically about 
the *inaccurate claim* that any RDF document is a Linked Data document.


1. http://bit.ly/RJzd9S -- DIY-style Linked Data deployment via Turtle
2. http://bit.ly/O4LNKf -- DIY-style LInked Data deployment and 
Web-scale verifiable identity.

>     Andy



Kingsley Idehen	
Founder & CEO
OpenLink Software
Company Web: http://www.openlinksw.com
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Received on Friday, 31 August 2012 12:06:57 UTC

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