[seek-kr-sms] OBOE discussion: current version

Serguei Krivov Serguei.Krivov at uvm.edu
Wed Jun 21 07:42:28 PDT 2006


I am sending around a   portion of my list of questions related to the
current version of OBOE. I will send separately my questions related to
Ferdinando's version

 

Sergey

 

1.      Observable is either Entity or Characteristic (at the moment).
Characteristic has only one subclass Dimension, which defines the set of
base quantities such as length, weight, etc. , Dimension includes only
things measured in quantities. Thus at the moment we are missing
specification for observations of such characteristics as color, smell,
taste or anything which is measured in qualitative scale.

2.      Continuing the same subject. If we observe say color of a lion , is
that a measurement or just an observation? If we qualify such recording of
color as measurement, then given the specific association of  measurement
with units, we must have units for all qualitative scales. Having one unit
"qualitative" will be of no use, because this would lump  together unrelated
thing such as colors {read, orange..} , health level {exellent, good,.},
etc. Therefore, I would vote not to call such things as recording of color
measurement, but consider them as special kind of observation

3.      Each specific dimension has a set of related units. Say, length may
be measured in meters, centimeters , microns . I believe that this
association of a specific dimension with a set of respective units is an
important intuition that helps to make sense of calculations. Why do not we
draw an additional property hasUnit with domain Dimension  and range  Unit

4.      O&M scheme for Observation and Measurement has additional notion of
observation/measurement procedure. It looks as if this concept could be
easily added to OBOE by attaching property hasProcedure either to
observation or to Measurement or to both. If we have property has procedure
with domain that include both Observation and Measurement, then we might
need to think how measurement procedure is related to observation procedure.
Does it have sense to have both observation procedure and measurement
procedure?

5.      There is property hasMeasuredCharacteristic with domain Observation
and range Measurement. Is Measurement an event, procedure or characteristics
of something? I think that Measurement as such is not a characteristic but
an event. But measurement is a measurement  *of* a characteristic. Therefore
property hasMeasuredCharacteristi should have domain Measurement and the
range Characteristic. (but in this case it will duplicate property
hasSubject) . In fact the choice of range Characteristic is determined by
the name of the property hasMeasuredCharacteristic. The domain may be either
Measurement or Observation.

 

 

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