Research on Workflow Instance Migration Based on Automatic Planning Mechanism

To solve the problem of process instances adaptation caused by dynamic process changes in workflow systems, a solution of workflow instance migration based on automatic planning mechanism was proposed, in which AI planning methods were used in migrating workflow system. The initial state and the target state of migrating instance were expressed with disjunction of an order prediction, the HTN method was used to plan task, which enabled migrating instance planning task sequence based its current state and the target state, then according to the task sequence and the services provided by work poison, dynamic migration domain was established and corresponding itinerary graph was constructed, and using travel experience of other migrating instance as enlightening information, with the search strategy based on ant algorithm, the optimal solution map was chosen from travel plans which included multiple solutions.