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Re: On Quantity - Measurement relationship

  • From: Werner Keil < >
  • To: " " < >
  • Subject: Re: On Quantity - Measurement relationship
  • Date: Sat, 1 Nov 2014 16:37:40 +0100

That's part of the Spec, while some terms there (OK, "Measurable" was
already purged[?]) may be influenced by JSR 275 or the prior Unit-API

Quantity currently refers to Wikipedia:
http://en.wikipedia.org/wiki/Quantity
Quantities can be compared in terms of "more", "less" or "equal", or, by
assigning a numerical value in terms of a unit of measurement

They are both called Quantity here, and thus having a base type Quantity
allowing those non-numerical terms like "more", "less", "heavy", "light",
"blue", "red" or "green", "Medium", "X-Large", etc. (often best represented
by enums) and then something like Measurement (assigning a numerical value
in terms of a unit of measurement)
we'd perfecly cover both magnitude and multitude (or a more general
non-numeric form)

Werner

On Sat, Nov 1, 2014 at 4:17 PM, Martin Desruisseaux <
>
 wrote:

> Le 01/11/14 22:53, Jean-Marie Dautelle a écrit :
> > Note: We see in that case that Quantity cannot implement Comparable.
> > HEAVY/LIGHT may depend on the context, the boundary may not be well
> > defined or be relative, e.g. we can compare HEAVY with LIGHT but not
> > HEAVY with another mass).
> Right. But HEAVY and LIGHT are not "quantitative measurement". This
> bring us back to my original question: what is our definition of Quantity?
>
> Guys, I feel that before to continue any further in this discussion, we
> need to write a "Definition of terms" page.
>
>     Martin
>
>

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Re: On Quantity - Measurement relationship

(continued)

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Jean-Marie Dautelle 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014
 
 
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