- From: David Allsopp <dallsopp@signal.dera.gov.uk>
- Date: Mon, 04 Jun 2001 13:48:59 +0100
- CC: www-rdf-logic@w3.org
Sandro Hawke wrote: > > What I do wish to assert is the <if> expression. The problem with RDF as it > > is currently defined (statement == triple == fact) is that I cannot assert > > an expression created of multiple statements (i.e. a subgraph) apparently > > without asserting each of the subgraphs within the subgraph. > > (repeating Dan Connolly yesterday...) > > This seems to be a common myth. Where in the current definition of > RDF does it say that you cannot describe (mention) a triple without > asserting (using) it? > > (I wont be shocked if it does say it somewhere -- I'm not fond of the > current REC -- but I would love a pointer if you happen to know where > it says this.) RDF Model & Syntax, 4.1: "For example, let us consider the sentence Ora Lassila is the creator of the resource http://www.w3.org/Home/Lassila RDF would regard this sentence as fact..." RDF Model & Syntax, 5: "...facts (that is, statements) are triples that are Members of [the set] Statements..." I would interpret this as saying that a triple is always asserted. Regards, David Allsopp. -- /d{def}def/u{dup}d[0 -185 u 0 300 u]concat/q 5e-3 d/m{mul}d/z{A u m B u m}d/r{rlineto}d/X -2 q 1{d/Y -2 q 2{d/A 0 d/B 0 d 64 -1 1{/f exch d/B A/A z sub X add d B 2 m m Y add d z add 4 gt{exit}if/f 64 d}for f 64 div setgray X Y moveto 0 q neg u 0 0 q u 0 r r r r fill/Y}for/X}for showpage
Received on Monday, 4 June 2001 08:50:12 UTC