15. The industrial plant of claim 12 , further comprising using a database accessible by both the model-based expert system and the rule-based expert system, wherein the database comprises: (a) data pertaining to the configuration of the mathematical model in the model-based expert system; and (b) data pertaining to the configuration of the rules in the rule-based expert system.
15. The industrial plant of claim 12 , further comprising using a database accessible by both the model-based expert system and the rule-based expert system, wherein the database comprises: (a) data pertaining to the configuration of the mathematical model in the model-based expert system; and (b) data pertaining to the configuration of the rules in the rule-based expert system. 16. The industrial plant of claim 15 , wherein the database further comprises: [c] data pertaining to the message suppression relationships in the integrated expert system.