Expert system with three classes of rules

  • US 4,884,217 A
  • Filed: 09/30/1987
  • Issued: 11/28/1989
  • Est. Priority Date: 09/30/1987
  • Status: Expired due to Term
First Claim
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1. An expert system, comprising:

  • a collection of inference rules, consisting ofretrieval rules, respective ones thereof including standards for associating an attribute with an object selectively in accordance with input values; and

    non-retrieval rules, respective ones thereof each performing a function selected from the group consisting of;

    associating an attribute with an object selectively in accordance with object/attribute associations made by ones of said rules, and/or;

    selectively executing an external command in accordance with attribute/object associations made by ones of said rules;

    a processor connected to receive inputs from an input channel, to execute said collection of inference rules on said inputs, and to provide outputs on an output channel accordingly,wherein said processor is not programmed to perform any purely arithmetic test while executing said non-retrieval rules.

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