From: earlcox@earlcoxreports.com   
      
    wrote in message   
   news:slrndc0eov.u0a.rshepard@salmo.appl-ecosys.com...   
   > On 2005-06-26, wsiler@aol.com  wrote:   
   >   
   > > Charles Forgy's RETE algorithm greatly reduces program efficiency and   
   > > running time.   
   >   
   >   Ah, that's too bad, Bill. I'd rather wait a few more CPU cycles and have   
   > increased efficiency.   
   >   
      
      
   Rich,   
      
   Well, old friend, since you are not viewing efficiency in terms of   
   through-put, what metrics are you using for program efficiency?   
      
   The RETE algorithm (also implemented in my own fuzzy modeling system that   
   supports both backward and forward chaining as well as SIMD parallel fuzzy   
   processing) is not inherently inefficient nor is it inherently brittle. The   
   choices the designer and implementor makes in making the algorithm a   
   backbone of their reasoning engine determines the speed, efficiency, and   
   robustness of the RETE network. I routinely run 9K to 13K rules/sec even in   
   a backward chainer with a recursive search depth as deep as five levels   
   (also see my discussion of this issue in my book, Fuzzy Logic for Business   
   and Industry).   
      
   Earl   
      
      
   BTW, when will your new book,  Quantifying Environmental Impact Assessments   
   Using Fuzzy Logic , be available in our local bookstores?   
      
   --   
      
      
   E a r l  C o x   
   Founder and President   
   Scianta Intelligence, LLC   
   Turn Knowledge Into Intelligence   
      
   w w w dot scianta dot com   
      
   1289 N. Fordham Blvd. Suite 312   
   Chapel Hill, NC 27514   
      
   (O) (919) 678-0477   
   (C) (919) 302-6791   
      
   AUTHOR:   
   "The Fuzzy Systems Handbook" (1994)   
   "Fuzzy Logic for Business and Industry" (1995)   
   "Beyond Humanity: CyberEvolution and Future Minds"   
   (1996, with Greg Paul, Paleontologist/Artist)   
   "The Fuzzy Systems Handbook, 2nd Ed." (1998)   
   "Fuzzy Modeling and Genetic Algorithms   
        for Data Mining and Exploration" (2005)   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)