Dear All,
I just saw that I have implicitly proposed a solution to Issue 583 in my
homework for Issue 388, as posted today:
*ISSUE 583:*
What needs now to be spelled out is the direct measurement of distances,
angles and differences of dimensions of things, such as weights on a
balance.
*I propose* a “Sxx2 Relative Dimension”, IsA E54 Dimension,
With property:
/Oxx6 is relative to/: S15 Observable Entity, subproperty of /O12i has
dimension (is dimension of)/,
Quantification (2:2,0:n).
That will not cover angles, because we need 3 reference points.
Actually, one is the position of the instrument.
If we allow Oxx6 to be more general in quantification, a further
specialization would allow for defining
Sxx3 Angle, IsA Sxx2 Relative Dimension
and /Oxx7 has vertex/: S15 Observable Entity, subproperty of /Oxx6 is
relative to/
Then, we can define how the auxiliary measurements are combined into a
position measurement.
Such a "relative dimension" may correspond to an Observable Situation,
if measured in the presence of the related entities.
A "Sxx2 Relative Dimension" with /P2 has type /"spatial distance"
corresponds to a spatial relation between the respective related
entities. To be analyzed what that means if events are involved that
happened at different times. It would require a memory of the places
where they happened. Otherwise, it would be computational via coordinates.
I assume that whatever is indeed measured, requires a sort of
simultaneity, except for carrying a clock from one event to another,
which again may be a form of simultaneity.
All the best,
Martin
--
------------------------------------
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,
GR70013 Heraklion,Crete,Greece
Vox:+30(2810)391625
Email:mar...@ics.forth.gr
Web-site:http://www.ics.forth.gr/isl
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