Re: [oor-forum] Categories for ontologies

[Aleksandra Sojic <aleksandrasojic@xxxxxxxxx>]

Dear Prof. Sowa,

Thank you a lot for your feedback and useful references. We can discuss the issue of meta-ontology in the teleconference tomorrow (as Mike Bennett suggested).

Kind regards,

Aleksandra

On 29 July 2013 13:58, John F Sowa <sowa@xxxxxxxxxxx> wrote:

On 7/29/2013 4:33 AM, Mike Bennett wrote:
> a classification scheme for subjects and a classification scheme
> for classes of "Thing", are two separate matters! I hope we are
> able to keep this in mind.

I agree.  In fact, there is nothing special about ontologies.
They're just one more kind of metadata.  And there is nothing
special about metadata.  They're just signs of signs.

There's a name for that:  Semiotics.

The first ontology that classified signs and signs of signs was
the Scholastic distinction between *first intentions* (which are
signs that refer to things in the world) and *second intentions*
(which refer to signs).

For a very brief summary of those issues see slides 87 to 90
of http://www.jfsowa.com/talks/kdptut.pdf .

The largest ontology that dealt with such issues was by John Wilkins,
who used the term 'transcendental' for categories of signs.  For a
summary of Wilkins' ontology, see slides 91 to 93.

For an updated version of Wilkins' top level with the category
Transcendental replaced by Signs, see slides 100 to 103.

John

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