[Crm-sig] Domain and range of P90

Martin Doerr martin at ics.forth.gr
Wed Feb 28 12:26:49 EET 2018


Dear Philip,

Let me clarify here a fundamental principle of the CRM, which is not 
negotiable:

Labels are mnemonics, and not semantics. There is no way by selecting a 
term to overcome the ambiguity of natural
language. A CRM property is therefore defined semantically by the scope 
note and the domain and range. The fact that in English you may 
interpret the word "value" in a similar way for other things has nothing 
to do with ontology, as a system of language-neutral senses. There may 
only be arguments to chose another label, but not to reapply the 
property to other things because of the label.

To raise domain or range to E1 is, in general, an error: In an open 
world, without any substance for a thing defined, there is no way to 
determine if a property is consistently applied and comparable to others.
It was an error to raise Dimension to E1, and that should be fixed in 
the next releases.

If we interpret "value" as content, and not as quantity, which would be 
a remarkable shift of meaning, the first question we have to answer is 
what is the smallest class for which we are sure that it comprises all 
things that have a content in a way we can objectify it. E1 has the only 
semantics that it is something which can be identified unambiguously. 
This is not enough to say in which way it could have a "value".

For all those that have the same questions, I'd like to point to our new 
guidelines of modelling principles, and ask if you find an answer in 
there or if this text confuses more;-).

All the best,

Martin

On 2/21/2018 6:04 PM, Carlisle, Philip wrote:
>
> Dear all,
> Naïve question.
>
> Is there any reason why P90 has value could not/should not change its 
> domain and range from:
>
> Domain: Range
>
> E54 Dimension              E60 Number
>
> to
>
> E1 CRM Entity              E59 Primitive Value
>
> I look forward to you answers
>
> Phil
>
> *Phil Carlisle*
>
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