Way back in the day (circa 1990), I worked on the ICADS (now called CADRC) project at CalPoly SLO that did similar things for Architectural design CAD systems. Pretty cool...
See: http://www.cadrc.calpoly.edu/ I'm sure this can be done for other domains as well. alan -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jason Morris Sent: Friday, February 27, 2004 4:04 PM To: [EMAIL PROTECTED] Subject: RE: JESS: Case Based Reasoning with Rules Hi Rich, Hybrid (case-based/rule-based) systems are an absolutely fascinating concept, and I have been wondering about their implications and possibilities for some time also. My original interest in expert systems came by way of involvement in developing online performance-support tools for mid-range, computer-aided design software. My though was: Why can't CAD software really help an engineer do "engineering" while he or she is creating geometry. Right now, CAD tools are reaching a feature-functionality parity where they basically do all the same things inside the same performance envelope. I was looking for innovative product differentiators, and I saw an opportunity to add real design intelligence to the tools. As an example, picture a CAD tool that could: [] Interactively and in real-time monitor your geometry creation and point out potential stress concentrations, point out violations of ASME or company standards, or other conflicts with other design constraints not related to geometry. [] Apply "design patterns" from existing designs or "best-practices" (use cases), or compare geometry creation intent to standard design-for-manufacturing (DFM) or design-for-assembly (DFA) principles to catch problems before they occur, or deduce a best design approach given company standards and methods (use rules). Does this sound too far fetched? I didn't think so then... and with tools like Jess and FuzzyJess, I certainly don't now. Is it a big undertaking? Without question! I have no illusions about how huge this would be to do. Management will always say, "That's cool, but what's the business case? What customer problem are you trying to solve?" I think that one could claim that such a system, by folding actual engineering knowledge into the geometry creation process and leveraging accumulated corporate knowledge, would: * Reduce time-to-market by collapsing the overall time to design and prototype a viable system (promote design reuse). * Reduce manufacturing and assembly costs by catching conflicts before they hit the production floor. * Push risky processes further up the development process where they can be caught and eliminated quickly before they cause problems down-stream. Given the esoteric and very non-conventional nature of the proposal, convincing management about the ROI enough that it ever got funded as a project was impossible. I hate to accuse management of being narrow-minded, but as in most industries, there are long-established ways of doing things in CAD, and the powers that be were (and are) loath to deviate from following them. So, at the time, I didn't have the programming or knowledge engineering experience to even prototype such a system, but now I do. I'd give my eye-teeth to work on such a project! I'd be very interested to hear your further thoughts as well as anyone else's on the general hybrid subject. Q. What companies are applying hybrid systems to mechanical design? Does anyone have some examples? BTW - thanks for all your replies on other threads so far. -JM ------ Jason Morris Morris Technical Solutions [EMAIL PROTECTED] www.morristechnicalsolutions.com fax/phone: 503.692.1088 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Rich Halsey Sent: Friday, February 27, 2004 8:51 AM To: [EMAIL PROTECTED] Subject: JESS: Case Based Reasoning with Rules Hi All, I have been thinking about Case Based Reasoning (CBR) and it would seem that if a rule-based system could (1) determine which objects it was matching on, (2) use Java reflection to list the object methods used for the predicates, and (3) retrieve within some repository all the objects that fit (1) and (2) and assert them into working memory, then CBR would be a natural extension of a rule-based system. Any thoughts ?? Rich Halsey -------------------------------------------------------------------- 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] -------------------------------------------------------------------- -------------------------------------------------------------------- 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] --------------------------------------------------------------------
