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Representing knowledge by neural networks for qualitative analysis and reasoning

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2 Author(s)
Vai, M. ; Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA ; Zhimin Xu

A systematic approach has been developed to construct neural networks for qualitative analysis and reasoning. These neural networks are used as specialized parallel distributed processors for solving constraint satisfaction problems. A typical application of such a neural network is to determine a reasonable change of a system after one or more of its variables are changed. A six-node neural network is developed to represent fundamental qualitative relations. A larger neural network can be constructed hierarchically for a system to be modeled by using six-node neural networks as building blocks. The complexity of the neural network building process is thus kept manageable. An example of developing a neural network reasoning model for a transistor equivalent circuit is demonstrated. The use of this neural network model in the equivalent circuit parameter extraction process is also described

Published in:

Knowledge and Data Engineering, IEEE Transactions on  (Volume:7 ,  Issue: 5 )