- From: Didier PH Martin <martind@netfolder.com>
- Date: Sat, 11 Dec 1999 14:51:24 -0500
- To: <www-rdf-interest@w3.org>
Hi Danny Good point, The actual premisses behind the RDF specs is that property ownership is governed by the set theory. What you are suggesting here is that it would be governed by the fuzzy set theory. Is that what you had in mind? Cheers Didier PH Martin ---------------------------------------------- Email: martind@netfolder.com Conferences: Web Boston (http://www.mfweb.com) Markup 99 (http://www.gca.com) Book to come soon: XML Pro published by Wrox Press Products: http://www.netfolder.com -----Original Message----- From: www-rdf-interest-request@w3.org [mailto:www-rdf-interest-request@w3.org]On Behalf Of Danny Ayers Sent: Friday, December 10, 1999 5:07 AM To: www-rdf-interest@w3.org Subject: Certainty Factors Hi, I'm just wondering what angle the proposed RDF spec takes for dealing with uncertainty, and the 'truth' of a statement. As an extreme case let's have the assertion in one place (abstracting it a bit) Object : Freddy's cat Attribute : Colour Value : Red and elsewhere we have the assertion Object : Freddy's cat Attribute : Colour Value : Green As I see it, there are essentially two approaches available - 1. there is no need for implicit definition of certainty within RDF; 2. certainty can be expressed in a RDF triple. With 1, it could be left to a reasoning engine to determine which of these statements is more likely to be true - following a chain of authority perhaps, if the chain leads back to a document with Freddy as the author, then we take his word on it. With 2, we could have additional assertions along the lines of : Object : The first statement about the colour of Freddy's cat Attribute : Certainty Value : 0.9 or even Object : This document Attribute : Certainty Value : 0.01 Any thoughts on this? I must confess that my knowledge of RDF is pre-pubescent, and apologies if I've missed a relevant thread or document. Cheers, Danny. Having looked at other knowledge representation methods in the past ------------- Click on a button on this site to make a *free* food donation to hungry people (paid for by sponsors) : http://www.thehungersite.com/index.html
Received on Saturday, 11 December 1999 15:15:15 UTC