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IRIS WD-203 General Purpose Case-based Reasoning System

Case-based reasoning (CBR) can be defined as the task of solving a new problem by remembering a previous related situation and of course reusing information and knowledge of that situation. Using a CBR system in structural health monitoring saves both time and money because accidents such as bridge collapses can be avoided. CBR systems also are used e.g. for medical support, credit decision tasks, call centres and help centre feedback (Yoda's Desktop). The first CBR system (Dynamic Memory Model) CYRUS (former US Secretary of Defence, Cyrus Vance) has used a hierarchical structure of episodic Memory Organisation Packets (MOP). The main idea was to organize similar episodes in a general structure. The main purpose for MOP or generalized episodes is to index, match and retrieve relevant cases. CYRUS handles information/cases about talks between Cyrus Vance and other persons. Each CBR system can be specified within 4 steps. First, a new problem 1 occurs. 1. Retrieve the most related cases 2. Reuse the information in this case for solving the new problem 3. Revise the solution 4. Retain the parts of this case for using it to solve a future problem Figure 1. The CBR Cycle 2 1 e.g. a new bridge for health monitoring 2