On 1/10/2013 2:51 PM, Kingsley Idehen wrote:
> On 1/10/13 2:32 PM, Ed Barkmeyer wrote:
>> On 1/9/2013 8:36 AM, John F Sowa wrote:
>>>> Sjir,
>>>>
>>>>>> I would just have said that a datum is a proposition that is taken to
>>>>>> be, or asserted to be, true. The context for that role is any context
>>>>>> in which the proposition is taken to be true.
>>>> I agree.
>>>>
>>>> I would also add that not all data is propositional. For example,
>>>> the list of names and numbers in a telephone book consists of paired
>>>> instances of two kinds of data. Each pair becomes a proposition
>>>> when the instances are inserted in an appropriate schema:
>>>>
>>>> "The person named _________ has the telephone number ________."
>> I disagree. That is, the meaning of each pair in the telephone
>> directory is a proposition of that form, and the pair is a datum. It is
>> not necessary to express the sentence per se.
>>
>> Is John saying that the name of the person is not by itself a
>> proposition? I would argue that, if one considers the name of the
>> person alone to be a datum, then it expresses a different proposition,
>> to wit: There exists a person whose name is X. Further, the presence of
>> the name in the telephone book implies the proposition: There exists a
>> telephone number N such that the person named X has telephone number N.
>> Both of these follow from the proposition that is the meaning of the
>> pair (datum).
>>
>> The distinction I am making is in what the datum is. I argue that a
>> datum is a proposition. A value without any interpretation is not a
>> datum. It is a child without a meaning.
>>
> Thus, in Turtle notation [1] for RDF model based data representation
> syntax, the following is an example of a Datum (a single proposition),
> right?
>
> <#PersonX> <#hasPhoneNumber> <tel:+999-999-9999> .
>
> While this is Data i.e., more than one proposition, as in:
>
> <#PersonX> <#hasPhoneNumber> <tel:+999-999-9999> ;
> <#knows> <#PersonY> . (01)
IMO, yes. (02)
-Ed (03)
>
> Links:
>
> 1. http://www.w3.org/TeamSubmission/turtle/
> 2. http://www.w3.org/TR/turtle/ .
> (04)
--
Edward J. Barkmeyer Email: edbark@xxxxxxxx
National Institute of Standards & Technology
Systems Integration Division, Engineering Laboratory
100 Bureau Drive, Stop 8263 Tel: +1 301-975-3528
Gaithersburg, MD 20899-8263 Cel: +1 240-672-5800 (05)
"The opinions expressed above do not reflect consensus of NIST,
and have not been reviewed by any Government authority." (06)
_________________________________________________________________
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 (07)
|