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Re: (Round 2) Proposed Extensions to OWL

From: Roger L. Costello <costello@mitre.org>
Date: Sun, 06 Jul 2003 11:12:03 -0400
Message-ID: <3F083C43.AEF831DA@mitre.org>
To: www-rdf-interest@w3.org
CC: "Thomas B. Passin" <tpassin@comcast.net>, "Costello,Roger L." <costello@mitre.org>, b.fallenstein@gmx.de, jon@spin.ie

Hi Folks,

I have incorporated Benja's and Tom's comments, and added a few of my
own. Comments?  /Roger

-----------------------------------------------------------------
Conceptual Model:

TangibleObject
   physicalProperty
      PhysicalProperty
         measurement
            Measurement
               measurementValue
                  MeasurementValue
                     numericalValue
                     unitSpecification
               precision
               source
               ... (any other measurement metadata)

-----------------------------------------------------------------
Conceptual Model Applied to a TangibleObject which has a length:

TangibleObject
   length
      Length
         measurement
            LengthMeasurement
               value
                  LengthValue
                     number
                     units
               precision
               source
               ... (any other measurement metadata)

-----------------------------------------------------------------
Conceptual Model Property Hierarchies:

                        physicalProperty
                               |
              ---------------------------------
              |                               |
         lengthProperty                  areaProperty
              |                               |
   -------------------------            -------------
   |       |      |        |            |           |
 length  width  height  thickness     area         size
 
and:
        numericalValue     unitSpecification
            |                     |
         number                 units

-----------------------------------------------------------------
Conceptual Model Class Hierarchies:

       PhysicalProperty            Measurement           Value
             |                         |                   |
      ----------------          LengthMeasurement    MeasurementValue  
      |              |                                     |
   Length           Area                               LengthValue

-----------------------------------------------------------------
Concrete Example that Conforms to the Conceptual Model:

<River rdf:ID="Yangtze">
   <length>
      <Length>
         <measurement>
            <Measurement>
                <value>
                   <Value>
                      <number>6300</number>
                      <units rdf:resource="#LengthInKilometers"/>
                   </Value>
               </value>
               <precision>(+/-)10km</precision>
               <source>OGC</source>
            </Measurement>
         </measurement>
      </Length>
   </length>
</River>
     
-----------------------------------------------------------------
Conceptual Model Statements:

M1) A TangibleObject may have zero or more physicalProperties.

M2) A physicalProperty is a kind of Property.

M3) The type of the value of a physicalProperty is a PhysicalProperty.

M4)  A lengthProperty is a kind of physicalProperty.
M4a) A areaProperty   is a kind of physicalProperty.

M5)  A length    is a kind of lengthProperty.
M5a) A width     is a kind of lengthProperty.
M5b) A height    is a kind of lengthProperty.
M5c) A thickness is a kind of lengthProperty.
M5d) A area is a kind of areaProperty.
M5e) A size is a kind of areaProperty.

M6) A PhysicalProperty may be characterized by zero or more measurement
properties.

M7)  A Length is a kind of PhysicalProperty.
M7a) A Area   is a kind of PhysicalProperty.

M8)  The type of the value of a length    is a Length.
M8a) The type of the value of a width     is a Length.
M8b) The type of the value of a height    is a Length.
M8c) The type of the value of a thickness is a Length.
M8d) The type of the value of a area is a Area.
M8e) The type of the value of a size is a Area.

M9) The type of the value of a measurement is a Measurement.

M10) A LengthMeasurement is a kind of Measurement.
M10a) The type of the value of a measurement property of a Length is a
LengthMeasurement.

M11)  A LengthMeasurement is characterized by one or more equivalent
(numerical value, units specification) pairs.
Note - This refers to the values in different units, not to the
results of different measurements taken at different times or by
different methods.

M12) A (numerical value, units specification) pair is a kind of
MeasurementValue.

M13) A MeasurementValue may be associated with metadata that include -
    a) Accuracy
    b) Precision
    c) Data set
    d) Calculations
    e) Algorithms used for the calculation.
    f) Relevant publications
    g) Source
    h) Reported precision (i.e., number of decimal places in the 
       stated value, which may be different from the precision of 
       the measurement)

M14) There is at least one method for establishing the equivalence
between each (numerical value, unit specification) pair of interest.
Received on Sunday, 6 July 2003 11:14:11 GMT

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