Application of the Revision Theory to Adaptation in Case-Based Reasoning: The Conservative Adaptation

Case-based reasoning aims at solving a problem by the adaptation of the solution of an already solved problem that has been retrieved in a case base. This paper defines an approach to adaptation called conservative adaptation; it consists in keeping as much as possible from the solution to be adapted, while being consistent with the domain knowledge. This idea can be related to the theory of revision: the revision of an old knowledge base by a new one consists in making a minimal change on the former, while being consistent with the latter. This leads to a formalization of conservative adaptation based on a revision operator in propositional logic. Then, this theory of conservative adaptation is confronted to an application of case-based decision support to oncology: a problem of this application is the description of a patient ill with breast cancer, and a solution, the therapeutic recommendation for this patient. Examples of adaptations that have actually been performed by experts an...

• Type: Conference
• Year: 2007
• Where: ICCBR
• Authors: Jean Lieber
• Keywords: Automated Reasoning, Case-based Reasoning, Conservative Adaptation, ICCBR 2007, Old Knowledge Base