A production system consists of three elements: (1). a database or working memory of facts, which can include temporary states such as "Goal(open door)"; (2) a set of ules of the form IF <condition> THEN <action>, where conditions are logical expressions about the working memory, and actions may include changes to the working memory such as "ADD Goal(find key)"; and (3) an interpretter, which matches the conditoons against the working memory and then executes the action for a matching rule.
Used in Chap. 2: pages 16, 18, 23; Chap. 13: page 193; Chap. 18: page 279; Chap. 22: pages 344, 345
Also known as loans example, database, interpreter, language, working memory