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Expert system with knowledge base having term definition hierarchy

  • US 4,967,368 A
  • Filed: 06/05/1989
  • Issued: 10/30/1990
  • Est. Priority Date: 08/16/1985
  • Status: Expired due to Fees
First Claim
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1. A digital computer system operable as an expert system, said computer system comprising:

  • storage means to store a knowledge base including hierarchically-defined terms and their definitions, the corresponding definition of each term defining its respective term using the value of one or more terms, each of whose definitions is at a lower level of the hierarchy, and/or using one or more term-independent values which do not depend on the value of a term; and

    processing means for receiving commands from a user of the system, for producing inference commands in response to said user commands, for interrogating said storage means in response to said commands to obtain the definition of a given term, and for computing the value of said given term from its corresponding definition by obtaining the value of any term and any term-independent value in the corresponding definition,said system employing said computed value to produce an expert response to said user.

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