The Rete Algorithm was invented by Dr. Charles Forgy and is widely regarded
as the breakthrough that made rule-based inference efficient enough to be
practical. Dr. Forgy offers next generation advances in Rete on his
website at:http://www.pst.com
The animations of Rete available here follow the descriptions of the
implementation of Rete in the Jess system described in Ch 8, Jess In
Action, by Dr. Ernest Friedman-Hill. A copy of Jess can be obtained at:
http://herzberg.ca.sandia.gov/jess/index.shtml. A copy of the book, Jess
in Action, can be obtained at:
http://www.manning.com/friedman-hill/index.html