Weak and Strong Reversibility of Non-Deterministic Actions: Universality and Uniformity
Keywords: automated planning, non-deterministic planning, FOND planning, non-deterministic action reversibility, action reversibility
TL;DR: It defines and investigates a (novel) notion of action reversibility in the area of non-deterministic planning. It provides several theoretical results for both general and specific action reversibility and proposes several methods for its detection.
Abstract: Classical planning looks for a sequence of actions that transform the initial state of the environment into a goal state. Studying whether the effects of an action can be undone by a sequence of other actions, that is, action reversibility, is beneficial, for example, in determining whether an action is safe to apply. This paper deals with action reversibility of non-deterministic actions, i.e. actions whose application might result in different outcomes. Inspired by the established notions of weak and strong plans in non-deterministic (or FOND) planning, we define the notions of weak and strong reversibility for non-deterministic actions. We then focus on the universality and uniformity of action reversibility, that is, whether we can always undo all possible effects of the action by the same means (i.e. policy), or whether some of the effects can never be undone. We show how these classes of problems can be solved via classical or FOND planning and evaluate our approaches on FOND benchmark domains.
Category: Long
Student: Graduate
Submission Number: 240
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