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

Re: JSON-LD terminology

From: Gregg Kellogg <gregg@greggkellogg.net>
Date: Thu, 30 Aug 2012 14:56:50 -0400
To: Kingsley Idehen <kidehen@openlinksw.com>
CC: "public-rdf-wg@w3.org" <public-rdf-wg@w3.org>
Message-ID: <7E604790-ADF4-478C-A1C2-2F919AFB37E0@kellogg-assoc.com>
On Aug 30, 2012, at 11:47 AM, Kingsley Idehen <kidehen@openlinksw.com> wrote:

> On 8/30/12 2:33 PM, Markus Lanthaler wrote:
>> http://dvcs.w3.org/hg/json-ld/raw-file/default/spec/ED/json-ld-syntax/201208
>> 30/index.html#linked-data
> A problematic excerpt from the document referenced above:
> "A Linked Data document does not necessarily need to be expressed in JSON-LD. The notion of Linked Data is a concept independent of any given serialization format. In particular, any document based on an RDF serialization format is a Linked Data document."
> It isn't accurate to assert that any RDF document is a Linked Data document, and here's why:
> An RDF document doesn't have to be comprised of triple based content where each URI is dereferencable. There's nothing in the RDF spec that mandates that.
> Linked Data, as per TimBL's meme, mandates de-referencable URIs.
> RDF doesn't lose anything by being loosely coupled to the Linked Data concept. In a nutshell, loose coupling will suffice while mutually benefiting both RDF and Linked Data re., comprehension, appreciation and adoption.

Short of creating a separate document on exactly what Linked Data _is_, and whether RDF is Linked Data or not, I fear that this section could get out of hand. In discussions, it seems clear to me that much Linked Data can also contain BNodes (for instance an address of an person who is identified by an IRI). Any example of this is Microdata, which _can_ be used to define Linked Data, but given the examples in schema.org, tends to prefer BNode identifiers (the absence of @itemid within many examples).

The truth is that any format can be used property or abused. If there's a simple paragraph we can add consistent with the context of this section which clarifies this, I'm fine with it, otherwise, we risk conflating the purpose of defining JSON-LD with the definition of Linked Data itself.


> -- 
> Regards,
> Kingsley Idehen	
> Founder & CEO
> OpenLink Software
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Received on Thursday, 30 August 2012 18:57:27 UTC

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