On Jun 23, 2014, at 10:19 AM, Barkmeyer, Edward J <edward.barkmeyer@xxxxxxxx>
> ISO 1087-1 and ISO 704, which are standards for creating vocabularies and
>definitions (and did not arise from a formal logic community), specify two
>mechanisms for defining a ‘concept’ or ‘class’:
> 1) identify a more general concept and the delimiting characteristics of
>the subordinate concept being defined
> This is exactly: An A is a B that C.
> 2) identify a list of subordinate concepts that together cover the more
>general concept being defined – the union of other defined classes:
> An A is a B or a C or a D. (02)
This reminds me of the Gaia hypothesis to explain the origin of life: it came
from somewhere else. If all classes are defined in terms of other classes,
where does the whole process get started? (03)
> One can also define a Class as the intersection of two or more classes, but
>that is just a special case of (1): An A is a B that is also a C.
> I’m not aware of any others.
> From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx
>[mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx] On Behalf Of
> Sent: Saturday, June 21, 2014 9:32 PM
> To: [ontolog-forum]
> Subject: [ontolog-forum] Types of Formal (logical) Definitions in ontology
> 1) How many types of formal (logical) definitions of terms/classes do you
> For example, a term can be defined in a genus-species form: An A is a B that
> What others do you know of?
> 2) For ontologies, are there non-FOL definitions?
> Are there definitions not based on syllogistic logic?
> 3) And what are the pro's and con's of each?
> Thank you.
> 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 (05)
IHMC (850)434 8903 home
40 South Alcaniz St. (850)202 4416 office
Pensacola (850)202 4440 fax
FL 32502 (850)291 0667 mobile (preferred)
phayes@xxxxxxx http://www.ihmc.us/users/phayes (06)
Message Archives: http://ontolog.cim3.net/forum/ontolog-forum/
Config Subscr: http://ontolog.cim3.net/mailman/listinfo/ontolog-forum/
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)