On the automation of fixing software bugs
Companion of the 30th international conference on Software engineering
From runtime verification to evolvable systems
RV'07 Proceedings of the 7th international conference on Runtime verification
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We present a revision-based logical framework for modelling hierarchical assemblies of evolvable component systems. An evolvable component is a tight coupling of a pair of components, consisting of a supervisor and a supervisee, with the supervisor able to both monitor and evolve its supervisee. An evolvable component pair is itself a component so may have its own supervisor, or may be encapsulated as part of a larger component. Components are modelled as logical theories containing actions which describe state revisions. Supervisor components are modelled as theories which are logically at a meta-level to their supervisee. Revision actions at the meta-level describe theory changes in the supervisee at the object-level. These correspond to various evolutionary changes in the component. We present this framework and show how it enables us to describe the architecture and logical structure of evolvable systems.