Automated Support for Developing Retrieve-and-Propose Systems

We have studied the retrieve-and-propose problem solving method, a specialization of the general case-based reasoning method, in terms of its tasks in the context of fault-recovery domains. We have analyzed the case retrieval and learning tasks that are primarily used in the retrieveand-propose method, decomposed them into appropriate subtasks, associated decisions for selecting each subtask, and implemented methods for accomplishing each task. We have implemented a system, called REPRO for REtrieve and PROpose. that incorporates the results of this analysis and facilitates the selection of the appropriate algorithms for implementing a case-based expert system. We have used REPRO to develop the CABER case-based fault-recovery system.