Have a look at the endless number of threads on the archive for this list on "single-slot activations." Quick summary: that's how the Rete algorithm works, classically; but Charlemagne is going to let you do things differently, as an option.
I think Eric Jain wrote: [Charset iso-8859-1 unsupported, filtering to ASCII...] > I have a rule that looks something like this: > > (defrule taxon-has-parent > (logical ?taxon <- (taxon (parent ?p&:(taxon-exists ?p)))) > => (assert "...")) > > Note the user-defined function. > > Now every time I change any field of a shadowed taxon fact, this > function is called. Why in this case does Jess not only call the > function when a change to the 'parent' slot is detected? > > -- > Eric Jain --------------------------------------------------------- Ernest Friedman-Hill Distributed Systems Research Phone: (925) 294-2154 Sandia National Labs FAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://herzberg.ca.sandia.gov -------------------------------------------------------------------- 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] --------------------------------------------------------------------
