On Tue, October 30, 2012 09:15, Andries van Renssen wrote:
> doug foxvog on 6 september 2012 at 22:22 wrote:
>> On Thu, September 6, 2012 11:38, Andries van Renssen wrote:
>> ...
>> > A property measurement example has two angles: (01)
>> It appears that you are referring to a measurement series. "A" (single)
>> "measurement" sounds like an individual data point, to me. (02)
> [AvR] I refer a to continuous measurement over a period in time. This is
> an illustration of a property, such as a temperature T or
> speed, that is a phenomenon that lasts continuously over a period of time. (03)
This is a useful concept. IMHO, it would be useful to distinguish it from
a single
measurement. Would the tern "measurement series" seem reasonable? (04)
> Such a property (05)
If referring to a property value over a period of time, instead of a
series of
measurements over time, a generic term such as "temporally varying property"
might be useful. (06)
> can be quantified on a scale by relating
> it e.g. to a mathematical function, such as T = f(a.t+b), for t1 < t < t2
> (with t=time) for a linear increasing temperature, or it
> can be quantified at various moments in time by multiple relations with
> discrete values on a scale. However, e.g. temperature is not
> discrete in itself. The various relations between T and the discrete
> values do not mean that there are several temperatures. It is
> one temperature (over time) that has several quantification relations with
> discrete numbers. (07)
I suggest that distinguishing a "temperature" (single value) from a
"temperature
series over time", and both from a "temporally varying temperature" would be
useful. Relations could inter-relate the concepts. (08)
>> > The measurement process, in which various things are involved over
>> > time in different roles (09)
>> > And the results of the measurements as follows: (010)
>> > Object A <has property> T (011)
>> > T <is classified as a> temperature (012)
>> >From the below, it appears that T is an instance of a
>> time-vs-temperature-of-object graph.
>> A more semantic name than "T" would be
>> "TimeTemperatureGraphOfObjectA". (013)
> [AvR] No, T is the temperature itself. A graph might be a graphical
> representation of that temperature, but my expressions do not
> describe a graph. (014)
I wrote carelessly. You are referring to a time versus temperature function,
which can be depicted in a graph, not to the graph itself. (015)
The word "temperature" usually refers to a quantity (or quantity range)
or to the relation between a physical object and such a quantity. You
are using the word to refer to neither the quantity, nor the relation, but
to state of affairs of an object having a temperature over time. (016)
Using the same word for this additional meaning can be confusing. I'd
suggest a different term, such as "temperature over time" or
"time-temperature function". Then (017)
... the results of the measurements would be: (018)
Object A <has property> TimeTemperatureFunctionOfObjectA (019)
TimeTemperatureFunctionOfObjectA <is classified as a> temperatureOverTime (020)
>> > When the value of T varies over time we can create a sequence of
>> > relations between T and numeric values on a scale, such as:
>>
>> > T <has a value lower than> 50 C on t1
>>
>> > T <has a value equal to> 50 C on t2
>>
>> > T <has a value equal to> 51 C on t3
>>
>> > Etc.
>>
>> > Without the need to respecify the object A and the classification of
>> > T. (021)
>> Since ObjectAsTimeTemperatureGraph is an object that has
>> one functional property that relates it to Object A and another
>> functional property that relates it to a specific temperature at
>> some defined times (and to no temperature at other times). (022)
> [AvR] No. It is since a temperature (023)
A "temperatureOverTime" (024)
> is not a discrete property that allows for one value only,
> but it is a property that is
> continuous over time and can be related with many numeric values at
> different moments in time.
> A temperature is in fact a property that is also continuous in the space
> of the object that has the temperature and can be related
> to various numeric values that are valid at various positions in space and
> time! (025)
This is true for a "temperatureOverTime". Redefining the word "temperature"
to have this new meaning is confusing. (026)
I am simply urging that the two distinct concepts be maintained and that
their
definitions be made clear. I have no complaint with the model, just the
reuse
of term with re-defined meanings. (027)
-- doug foxvog (028)
>> > With kind regards,
>> >
>> > Andries
>> > ...
>>
>>
>> _________________________________________________________________
>> Message Archives: http://ontolog.cim3.net/forum/ontolog-forum/
>> Config Subscr: http://ontolog.cim3.net/mailman/listinfo/ontolog-forum/
>> Unsubscribe: mailto:ontolog-forum-leave@xxxxxxxxxxxxxxxx
>> Shared Files: http://ontolog.cim3.net/file/
>> Community Wiki: http://ontolog.cim3.net/wiki/
>> To join: http://ontolog.cim3.net/cgi-bin/wiki.pl?WikiHomePage#nid1J
>>
>
> (029)
_________________________________________________________________
Message Archives: http://ontolog.cim3.net/forum/ontolog-forum/
Config Subscr: http://ontolog.cim3.net/mailman/listinfo/ontolog-forum/
Unsubscribe: mailto:ontolog-forum-leave@xxxxxxxxxxxxxxxx
Shared Files: http://ontolog.cim3.net/file/
Community Wiki: http://ontolog.cim3.net/wiki/
To join: http://ontolog.cim3.net/cgi-bin/wiki.pl?WikiHomePage#nid1J (030)
|