Re: [ontology-summit] OWl and Knowledge reuse via import and modularizat

[Andrea Westerinen <arwesterinen@xxxxxxxxx>]

Ed and John, I have to agree with Ed's statement.  I have and continue to use OWL (+ SWRL) since they allow me to define the concepts and calculations that I need + with a reasoner, I can actually do something with all that logic.  So, the formalisms plus the tools make it attractive and usable, and I don't have to "roll my own".

Is this the only solution or only space where the concepts work?  No, but in this space, it works well.

Andrea

On Wed, Feb 5, 2014 at 3:14 PM, Barkmeyer, Edward J <edward.barkmeyer@xxxxxxxx> wrote:

John Sowa wrote:

> Every logic for specifying any ontology from Aristotle to the present can
> specify equivalences of that kind.  The issues about finding, importing,
> relating, and combining the modules are critical.
>
> Many people and committees are addressing those issues -- including the
> OOR and OntoIOP groups.  But they are intimately related to work that has
> been done for years in the database community, the knowledge base
> community, the programming language community, and mainstream IT.
>
> Any solution that addresses *only* communities with names that begin with
> the letter O will be *ignored* by mainstream IT.

Well, if mainstream IT is to be the judge, I am unaware of any Java syntax that says "Class A is equivalent to Class B", and similarly, I don't know of anything in XML schema declaration that says "element (or type) tag A is a synonym for element (or type) tag B".  I can talk about having the same type and being substitutable, but not about equivalence.  Similarly, UML has no concept of 'synonym'.  So, maybe only communities whose names begin with 'O' have any chance of after-the-fact reuse?  How do you do what Andrea did to incorporate a Location library in a Java program after-the-fact?  What symbols in your Java program match the ones in the imported library Interface?  Similarly, what tags in your XML Schema will match those in an imported 'XML Schema component library' just by reassignment of the XMLns?  "Mainstream IT" as we know it simply DID NOT ADDRESS THIS PROBLEM.  We "O" communities are trying to do something about reuse that they don't UNDERSTAND.

Mainstream IT is like any other technology.  Over time the technology is improved to beget new capabilities.  The new technologies that beget new capabilities REPLACE the older ones, or relegate them to their limited roles. The "O" communities are developing a new technology, and we don't really need to be concerned about what the Java programmers reject.  The teamsters could say "get a horse" until they lost their jobs to lorry drivers.  Sic transit gloria mundi.

-Ed


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