The role of ontologies in autonomic computing systems
IBM Systems Journal
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We formally verify consistency aspects of the rule-basedexpert system of IBM's System Automation software forIBM's e-server zSeries. Starting with a formalization of theexpert system in propositional dynamic logic (PDL), we areable to encode termination and determinism properties. Tocircumvent direct proofs in PDL or its extension \Delta, wefurther translate versions of the occurring decision problems to propositional logic, where we can apply advancedSAT and BDD techniques. In our experiments we could reveal some inconsistencies and, after correcting them, wesuccessfully verified a non-looping property for a part ofthe expert system.