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.
Defined on page 24
Used on pages 23, 24, 428, 527
Also known as loans example, database, interpreter, language, working memory