ABSTRACT
Case-based reasoning (CBR) is an artificial intelligence method used in many fields. The fundamental idea of CBR is that similar problems may have similar solutions. A CBR cycle always contains 4 steps, also known as ‘4-REs’ 1: Retrieval, Reuse, Revise, and Retain. Case retrieval is the first, also the most important step which aims at retrieving the most similar cases to the unsolved case from the case library.
