[Crm-sig] Issue 347 Dimension
martin at ics.forth.gr
Thu Nov 15 23:41:31 EET 2018
On 11/15/2018 8:11 PM, Robert Sanderson wrote:
> Some scoping questions, that might be obvious or might help clarify
> the discussion…
> The National Fire Protection Association is responsible for the safety
> diamond, that has Health (blue), Flammable (red) and Reactivity
> (yellow) ratings for the sample or area, each of which is measured
> from 0-4. This seems like a quantified numeric value with a
> particular unit. Is that then a Dimension, like:
> _:x a Dimension ;
> P2_has_type <health safety> ;
> P90_has_value 3 ;
> P91_has_unit <nfpa_unit> .
I'd argue this can not be measured by calibrated means. hence it is not
a Dimension, but a set of types, no matter that they are decorated with
> Color can be measured, but to be useful has three component parts.
> Pure red could be expressed as 256 red, 0 green, 0 blue. A type of
> redness, a value of 256, and a unit of hexademical color proportion
> (e.g. as per
> https://www.w3.org/TR/2018/REC-css-color-3-20180619/#rgb-color or the
> standard for sRGB)
> This would be most usefully expressed as a partitioning of an overall
> color dimension. This would be a second example of dimension
> partitioning to go along with non decimal unit systems (feet and
> inches, etc.) or currencies (florins, etc).
Yes, sure, valid. To be discussed in Berlin. Each custom datatype needs
a syntax, and string function to take it apart. This should come from
other communities that have solved the issue. Then we import this.
Dr. Martin Doerr
Honorary Head of the
Center for Cultural Informatics
Information Systems Laboratory
Institute of Computer Science
Foundation for Research and Technology - Hellas (FORTH)
N.Plastira 100, Vassilika Vouton,
Email: martin at ics.forth.gr
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