Case Retrieval Network and its Extension in CBR
Chen Bao-xiang · 2001
The different retrieval methods have a far-reaching influence on representation, organization and store of the cases in CBR. This paper provides a complete and formal description for basic case retrieval network(BCRN) which is put forward by Lenz and Burkhard, establishes its mathematical model and then makes an extension for it. In extension of BCRN a “virtual nodes layer” is inserted between information entities nodes layer and case nodes layer, every virtual node denotes an abstract concept induced from a groups of IE in which the information entities have similar attribute. The activation of virtual node can be controlled. If the activation is transmitted backward, user can find some concrete information in the IE nodes layer and if forward then user can find more abstract information or cases, so this extension can satisfy the requirement for different user inquiry.