Patent ID: 6289329
Filing Date: 2001-09-11
Classification: G06N

Abstract:
A computer-implemented apparatus for generating a rule-based expert system from a trained neural network expressed as network data stored in a computer-readable medium representing an interconnected network of neurons with associated weights data and threshold data, comprising:a network configuration extractor for accessing said network data and ascertaining the interconnection structure of said trained neural network by examining said network data;a transformation system for altering the algebraic sign of at least a portion of said weights data to eliminate differences in algebraic sign among said weights data while selectively adjusting said threshold data to preserve the logical relationships defined by said neural network;a symbolic representation generator for applying a sum-of-products search upon each neuron in said network to generate a multi-valued logic representation for each neuron; anda propagation mechanism for generating the rule-based expert system by combining said multi-valued logic representation of each neuron through network propagation to yield a final logical expression;said computer-implemented apparatus implementing the final logical expression as a set of rules in a rule-based expert system of the trained neural network.