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Data processing apparatus for a temporal based rule system

  • US 5,418,887 A
  • Filed: 04/28/1994
  • Issued: 05/23/1995
  • Est. Priority Date: 05/08/1989
  • Status: Expired due to Term
First Claim
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1. A data processing apparatus for carrying out a simulation of an evolution over sequential stages of the simulation of a set of behaviors, each behavior being external of, or internal to, said data processing apparatus, said apparatus comprising means for storing a set of rules within the apparatus, each rule taking the form of a condition portion and a response portion with the condition portion of each stored rule requiring the continuous presence of a specific behavior or set of behaviors for a specific finite time exceeding zero within the simulation and the response portion of each rule specifying a change in behavior, means within the apparatus for maintaining a record of which of said set of behaviors are present from stage to stage of the simulation, for modifying said record upon a termination of a behavior of said set to indicate that the terminated behavior is not present, for referring to the stored set of rules at each stage of the simulation to determine, on the basis of the behaviors which the record indicates are then present and times within the simulation at which each such presence last began, future times within the simulation at which next changes in behavior, associated with said future times, will be effected by the firing of rules, and for outputting said future times and the associated next changes in behavior in succession.

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