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Translation of a neural network into a rule-based expert system

  • US 5,438,644 A
  • Filed: 09/09/1991
  • Issued: 08/01/1995
  • Est. Priority Date: 09/09/1991
  • Status: Expired due to Fees
First Claim
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1. A data processing system comprising:

  • a neural network having an input layer of input units, and different layers of processing elements including an output layer of output processing elements and at least one hidden layer of hidden processing elements;

    a translating means for translating knowledge in said neural network having an input layer of input units, and layers of processing elements including an output layer of output processing elements and at least one hidden layer of hidden processing elements, said translating means operable to translate knowledge in the outer layer and each hidden layer of the neural network into a corresponding layer set of rules, there being a corresponding layer set of rules for each of the outer layer and each hidden layer, and there being undefined hidden concepts embodied in the layer sets of rules;

    a rewriting means for rewriting rules from the layer sets of rules by reformulating rules from one layer of said layers of processing elements in terms of rules of another layer of said layers of processing elements to eliminate undefined hidden concepts and thereby generate a rewritten set of rules, the rewritten set of rules comprising rules in IF-THEN form; and

    a memory for receiving and storing the rewritten set of rules; and

    wherein said translation means and rewriting means are operably connected to said neural network.

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