> 2) can scan a very large database trying to find exceptions [alan] The jess user contrib library:
http://herzberg.ca.sandia.gov/jess/user.shtml has excellent framework written by Thomas Barnekow that you might want to take a look at. > 3) where the rules used to identify exceptions can be entered > or changed flexibly (possibly by the end users) [alan] I'd consider using or creating a rule generator for the end users - a fairly simple one would do just fine. You can create a generator that uses a subset of jess's capabilities in a controlled fashion, probably in conjunction with a set of rules you write to support the end user generated code/data. The more you model the user's input as data and write more of the rules yourself, the less likely you will run into problems but may have additional performance overhead. > We haven't started formalizing the rules yet, but my > experience with the users suggests that rules can be complex, > with many branches, frequently not clearly defined and based > on stochastic variables. [alan] Can't help you there... > > Has anybody used a ruled-based engine for Data Quality systems? [alan] I am in the process of designing a jess based system to check the quality of data - only in our case, it's a spectrographic data generated by an instrument and not business data. Your task will be easier than mine so if you run into trouble, I'm <censored/> D-; -------------------------------------------------------------------- To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] --------------------------------------------------------------------