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<p>The maintenance of large information systems involves continuous modifications in response to evolving business conditions or changing user requirements. Based on evidence from a case study, it is shown that the system maintenance activity would benefit greatly if the process knowledge reflecting the teleology of a design could be captured and used in order to reason about he consequences of changing conditions or requirements, A formalism called REMAP (representation and maintenance of process knowledge) that accumulates design process knowledge to manage systems evolution is described. To accomplish this, REMAP acquires and maintains dependencies among the design decisions made during a prototyping process, and is able to learn general domain-specific design rules on which such dependencies are based. This knowledge cannot only be applied to prototype refinement and systems maintenance, but can also support the reuse of existing design or software fragments to construct similar ones using analogical reasoning techniques.</p>
software tools; expert systems; dependency directed reasoning; systems maintenance support; information systems; user requirements; teleology; REMAP; process knowledge; prototyping; domain-specific design rules; software fragments; expert systems; software reliability; software tools

V. Dhar and M. Jarke, "Dependence Directed Reasoning and Learning in Systems Maintenance Support," in IEEE Transactions on Software Engineering, vol. 14, no. , pp. 211-227, 1988.
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