W3C home > Mailing lists > Public > www-rdf-interest@w3.org > July 2003

Re: blank nodes question

From: Graham Klyne <GK@ninebynine.org>
Date: Sun, 27 Jul 2003 10:03:13 +0100
Message-Id: <5.1.0.14.2.20030727094840.00b86248@127.0.0.1>
To: "Peter P. Jones" <ppj@concept67.fsnet.co.uk>, www-rdf-interest@w3.org

At 20:01 26/07/03 +0100, Peter P. Jones wrote:

>Hi,
>
>I have a question about blank nodes in RDF that's probably not as
>naive as it sounds.
>
>Q: Why are blank nodes necessary?

There is, I think, a sustainable argument that blank nodes are not 
*necessary*.  But in discussion, it seemed clear that some developers found 
them sufficiently *useful* to justify their inclusion.  I think so.

There was also some thought of using RDF expressions in contexts other than 
as assertions, where the usual approach of Skolemization doesn't 
work.  There is some discussion in the RDF semantics draft [1], discussion 
of the Skolemization lemma.

#g
--

[1] http://www.w3.org/TR/rdf-mt/#prf


-------------------
Graham Klyne
<GK@NineByNine.org>
PGP: 0FAA 69FF C083 000B A2E9  A131 01B9 1C7A DBCA CB5E
Received on Sunday, 27 July 2003 05:50:07 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 7 December 2009 10:52:00 GMT