Case Retrieving Based on Grey Incidence Degree in CBR

Based on the characteristic of grey system theory, which is an effective method to solve uncertain problems, we used grey incidence analytic method into case retrieving of CBR. We took grey incidence degree as a tool for measuring the similarity degree of case. Grey predominance analysis was applied for choosing the most suitable case. If there was no strict suitable case, AHP (analytic hierarchy process) method was used to calculate weight of different indices, then we got synthetical grey incidence degree, ascertain synthetical most similar case. A CBR framework based on grey incidence degree was built based on grey incidence analytic method. Finally, an example was presented. The results show that the method is simple and practical; the model provides an effective method to case retrieving