An approach to safe continuous planning

In this paper we discuss the “safe to act” problem, a problem associated with the safe interleaving of acting and planning. We also discuss previous research that is relevant to this problem. We then propose a specific search strategy for a general hierarchical plan-space planner that pushes portions of the emerging plan to become “execution ready” as quickly as possible. Finally, we discuss a property, critical serialisability, that is sufficient for a domain to possess in order for these portions to be “safely” executed.