Patent
1991-11-15
1992-12-08
Fleming, Michael R.
395 50, 395 12, G06F 1518
Patent
active
051704641
ABSTRACT:
A system and method suitable for use with a rule-based expert system maintains a history of execution states through which the expert system progresses during execution. A user can select a previous execution state for roll back, and later states maintained in the history are undone in reverse order until the selected state is reached. If desired, a user can define a breakpoint to which the system is to be rolled back. The corresponding executable state is determined from a retained history of all potential breakpoints, and the system is then rolled back to such corresponding executable state.
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Hayes Raymond R.
Hsieh Lo
Downs Robert W.
Fleming Michael R.
International Business Machines - Corporation
O'Malley, Jr. Paul W.
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