ABSTRACT 

We have developped experimental system to illustrate Case-Based Reason-
ing. In design task, it is very important to store and utilize design cases, for 
the designer is often required to cope with a variety of design objects within a 
limited time. This system supports a user in designing a new degital circuits 
using similar precedential circuits. 

KEY FEATURES 

Structural indexing 

Functional hierarchy trees, that represents functional structures of design 
objects, are created interactively and used as indices for case retrieval. 

Flexible case retrieval mechanism 

Structure Mapping Engine(SME) retrieves the cases whose functional struc-
tures are similar to the design object's. To shorten run-time, cases are re-
trieved parallel. The structures of the design object and cases are mapped 
into each processor in good balance. 

Case modification mechanism 

System verifies detail specs of retrieved cases, modifies them, recovers design 
failures with SME, and combines circuit blocks. 




System Configuration  


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