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RE: Weights and Measures

From: dehora <bill@dehora.fsnet.co.uk>
Date: Tue, 13 Mar 2001 16:51:15 -0000
To: "Jeremy Carroll" <jjc@hplb.hpl.hp.com>, <www-rdf-interest@w3.org>
Message-ID: <DCEBKOHMHCKKIAAPKLLMCEABCDAA.bill@dehora.fsnet.co.uk>
Jeremy,

I don't see that as an error of the M&S. To do what are you suggesting
is to list all possible equivalent quantities (or as a many as you see fit).
Normally, since here is only one or two that's fine. But why bother? Would we
do the same for .../metres/centis/millis/...? Sure they have a family
resemblance, but you still need an algorithm to convert between them. There
isn't really any difference between 2 machines moving between pounds and kilos
versus moving between kilos and tonnes. You just replace one algorithm for
another.

It doesn't seem incorrect to give only one measurement of John Smith's weight.
If your machine doesn't know a particular unit of measurement, it can try
to bind it to another and convert the amount. Or it can ask the source for
any measurement mappings it might have. Or it can fail gracefully. Or some
clever spark can try and siumlate the "Strategy" OO pattern in RDF whereby
an RDF machine can give an input to another machine, telling it to convert to
a given measure and return something it can manipulate.

Bill de hOra
Received on Tuesday, 13 March 2001 11:54:45 GMT

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