- From: Graham Klyne <GK@ninebynine.org>
- Date: Thu, 12 Jul 2001 17:10:43 +0100
- To: rdf@oleary.demon.nl
- Cc: www-rdf-interest@w3.org
At 09:16 AM 7/5/01 -0400, rdf@oleary.demon.nl wrote: >Excuse a beginners question: > >I want to use RDF on the web site (escies.org) which carries data on >electronic >components. We are currently redesigning the search engine to allow >parametric search, >e.g. transistor with power rating between 1 and 2 watts. > >Can RDF be used to describe a range of values such as this? It certainly can, but there's not yet any standard way to do this that I'm aware of. A simple approach would be to have properties like Power_low and Power_high, but that means two new properties for every range-valued attribute. Another way, which seems to be consistent with the intent of RDF design, is to have a range value represented by a resource, with separate properties for the low and high values; it might look something like this: <rdf:Description about="http://example.org/Component/Transistor/xyzzy"> <ex:power> <rdf:Description> <range:lo>1</range:lo> <range:hi>2</range:hi> </rdf:Description> </ex:power> </rdf:Description> Many variations are possible, but if your solution fits within the general RDF framework it should be reasonably easy to process with standard RDF tools. #g ------------ Graham Klyne GK@NineByNine.org
Received on Thursday, 12 July 2001 13:39:20 UTC