Engineering CBR systems

• "Fixing" inconsistencies between diagnosis and symptoms. Techniques:
  • the end user does it
  • knowledge-based (qualitative reasoning, etc)
  • a fixed procedure
• Problem about updating the case-base with adapted cases:
  • Since the new case isn't exactly like any of the cases in the case-base, it can't really be said to have been solved by the expert judgement that was used to build the case-base in the first place.
  • There is a real chance that the conclusion that the system came to is wrong in this case
  • If wrongly concluded cases are added to the case-base, it becomes progressively degraded
  • Typically, the procedure is to put fresh cases into a special file, and have the Domain Expert pass judgement on them before they are added to the case-base.