Case modification mechanism 

Verifying the retrieved cases 

System verifies the availability of the retrieved cases by modification rules, 
if there are some incompatible detail specs. Modification rules deal with 
changing carry or number of devices, replacing another block, etc. 

Failure prediction and recovery 

Precedential failure situations and recovery informations represented with 
causal relations are also stored into case base. SME also predicts similar 
failures and advices the failure recoveries.(Fig.4) 





Fig.4 Failure prediction and recovery with SME 


RESULT 

Through experiments of non-stereotyped circuit, we confirmed the effec-
tiveness of CBR method with SME. We also comfirmed the effectiveness of 
parallel processing for case retrieval task requiring a long run time. 

OUTLINE OF DEMONSTRATION 

We deal with an application problem of telemeter circuits (a performance 
monitor of air-conditioner). 

For 22 partial functional hierarchy trees for the input problem, available 
circuits are retrieved from 180 design cases, modified and combined. 

Design result is a block diagram with 118 functional circuit blocks 

System shows how similar circuits are retrieved and modified. 



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