On Fri, February 4, 2011 12:25, Wacek Kusnierczyk said:
> On 2/4/11 11:10 AM, Yu Lin wrote:
>>> What I said was that I don't know what the timestamp you mention would
>> An instance in BFO has a timestamp.
>> For example:
>> In BFO, a Patient has a Quality of Elevated Temperature. (Capital
>> letter in the first letter means the Class) [in this statement, all in
>> class level, so there is no timestamp]
>> for instantiate :
>> 1. Mary (instance of Patient) had a temperature measured as 100F at
>> 16:43:00 2001/01/11
>> 2. Mary (same instance in 1) had a temperature measured as 90F at
>> 12:00:00 2001/01/12 (01)
>> I hope I make it clear for you. (02)
> Not really. If *every* instance has a timestamp, (03)
The example suggests that what was meant was every statement instance --
or possibly every temporal statement instance. Yu Lin did not claim
that *every* instance has a time stamp. If *every* instance of *every*
class had a time stamp, your statement below would be included. However,
that does not appear what Yu Lin meant. (04)
> I'd expect something like (05)
> (Mary at t) has (a temperature 100f at t) (06)
This would be a 4D statement. The provided statement was a 3D statement. (07)
> because that temperature seems to be, in this framework, an *instance*
> of the class Quality of Elevated Temperature. (08)
That class is not a temporal class and so should not have a timestamp. (09)
>> PS: I just know a little bit about logic. I have searched "IKL logic".
>> There is a slide of Pat on internet.
>> http://www.slideshare.net/PatHayes/ikl-presentation-for-ontolog (3
>> years ago)
>> I hope our communication can talk more on ontology as someone
>> mentioned in another mail.
> We can probably quite successfully *talk* about ontology without any
> knowledge of logic, but as you set off to *formalize* your ontology --
> and this seems to be your goal -- not knowing logic is rather an
> obstacle. (That's why I'm not doing ontology, for that matter.)
doug foxvog doug@xxxxxxxxxx http://ProgressiveAustin.org (011)
"I speak as an American to the leaders of my own nation. The great
initiative in this war is ours. The initiative to stop it must be ours."
- Dr. Martin Luther King Jr.
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