- From: Miles, AJ (Alistair) <A.J.Miles@rl.ac.uk>
- Date: Thu, 30 Sep 2004 13:50:05 +0100
- To: "'public-esw-thes@w3.org'" <public-esw-thes@w3.org>
Some extracts from 'RDF Semantics' [1] ... --- A 'name' is a URI reference or a literal. A set of names is referred to as a 'vocabulary'. The vocabulary of a graph is the set of names which occur as the subject, predicate or object of any triple in the graph. The semantics treats all RDF names as expressions which *denote*. The things denoted are called 'resources', following [RFC 2396], but no assumptions are made here about the nature of resources; 'resource' is treated here as synonymous with 'entity', i.e. as a generic term for anything in the universe of discourse. ... a 'sentence' makes a claim about the world: it is another way of saying that the world is, in fact, so arranged as to be an 'interpretation' which makes the sentence true. ... an interpretation provides just enough information about a possible way the world might be ... in order to fix the truth-value (true or false) of any ground RDF triple. *It does this by specifying for each URI reference, what it is supposed to be a name of;* All interpretations will be relative to a set of names, called the 'vocabulary' of the interpretation; so that one should speak, strictly, of an 'interpretation of an RDF vocabulary', rather than of RDF itself. *Some interpretations may assign special meanings to the symbols in a particular vocabulary.* --- ... my mind is bending ... [1] http://www.w3.org/TR/rdf-mt/ --- Alistair Miles Research Associate CCLRC - Rutherford Appleton Laboratory Building R1 Room 1.60 Fermi Avenue Chilton Didcot Oxfordshire OX11 0QX United Kingdom Email: a.j.miles@rl.ac.uk Tel: +44 (0)1235 445440
Received on Thursday, 30 September 2004 12:50:38 UTC