At 23:14 01/06/04 -0400, John Black wrote: >Let's use a little stage setting here. Suppose I have a search engine >agent that populates my web site with results of a semantic web enabled >search. I am in particular looking for FOAF documents with a particular >content. Now everything is working fine until one day, documents that >used to be retrieved correctly stop showing up and others that I've never >seen before - and don't want - do start showing up. Now I have to >debug this. Two equally plausible hypotheses occur to me. Either Dan >has gone bad, and decided to mess with the FOAF schema, or my search >agent has failed and its mistakes are equivalent to what Dan might >have done. I can't tell which. My documents, using the output >of the search engine, are defective in the same way in either case. >This is the symmetry argument. In a society of communicators, >correct interpretation is just as important as correct publishing. When this is truly a concern, maybe this proposal from Larry Masinter may be of some help: http://www.ietf.org/internet-drafts/draft-masinter-dated-uri-04.txt (i.e. you have a means to indicate a reference to a resource as it was presented at a specified time.) #g ------------ Graham Klyne For email: http://www.ninebynine.org/#ContactReceived on Wednesday, 2 June 2004 06:41:52 GMT
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