Hi Eric,
In a discussion with Vipul, he thought the work that Jeremy Zucker and
I did:
http://karma.med.harvard.edu/wiki/Debugging_the_bug
might be of interest to the ROI subgroup. In that work we discuss a
data integration example implemented in OWL that exposed quite a few
errors in the source databases, many of which have now been fixed at
the source. I don't currently any time to do much more write-up, but I
can answer any questions should you be interested in documenting it as
part of your efforts.
Regards,
Alan