PLAN EXECUTION SYSTEM, PLAN EXECUTION METHOD, AND PROGRAM

PROBLEM TO BE SOLVED: To provide a plan execution system allowing compliance with a dynamic environment without requiring any replanning. SOLUTION: A storage part 11 stores a plurality of total order plans, a storage part 15 stores presence/absence of side effect due to execution of the action and knowledge about the action canceling the side effect. A management part 12 selects one total order plan from the storage part 11 and makes an action execution part 14 perform its head action. A correction part 14 corrects the contents of matching one among the total order plans in the storage part 11 or deletes the total order plan from the storage part 11 according success/failure of execution of the action or knowledge about the action. This procedure is repeated, and when one of the total order plans stored in the storage part 11 is emptied, the plan is successful. If all the total order plans are deleted from the storage part 11 storing a plurality of plans, the plan is unsuccessful. COPYRIGHT: (C)2004,JPO