Business Applications

Hello,

I've been quite enthusiastic for a while about ontologies and related
tools. I've attempted to develop some semantic/knowledge enabled
applications. I'd really like to see some examples somewhere of how such an
application would look like. It seemed to me at first that semantics would
be a big revolution in application development.

The business needs I'm trying to address and some features are drafted in a
document at http://cognescent.googlecode.com/files/Brochure.pdf. In some
parts I try detail some thoughts regarding how I think an implementation
could be technically implemented. Are there any patterns or frameworks
where one can learn how to do such application as one would usually do with
a n-tier J2EE application, for example?

I always find myself like trying to reinvent the wheel and, perhaps because
I'm missing something, I end up just not willing to have just a triple
store replacing a traditional database and currently I cannot figure out
the patterns or layers that could comprise a real semantic application
beyond that. Are there any examples? Are the model, view, controller
concepts still valid? How a semantic app UI should look like.

Best regards,
Sebastian.