(defrule animal-sound (animal (species tiger)) => (assert (sound (noise "Roar"))))
IF hull stress exceeds 85% AND temperature drop rate > 2°C/min THEN fault-class = “catastrophic material failure” (CF 0.92) (defrule animal-sound (animal (species tiger)) =>
Many readers search for the Expert Systems- Principles and Programming- Fourth Edition.pdf not for theory, but for proven application patterns. The book provides detailed case studies, including: (defrule animal-sound (animal (species tiger)) =>
The most recent references are from the early 2000s. There is no mention of: (defrule animal-sound (animal (species tiger)) =>
The fourth edition gives you the reasoning half of the equation.
(defrule query-sound (sound (noise ?n)) => (printout t "The animal makes: " ?n crlf))