Balancing Explicability and Explanations in Human-Aware Planning

Balancing Explicability and Explanations in Human-Aware Planning

Tathagata Chakraborti, Sarath Sreedharan, Subbarao Kambhampati

Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence
Main track. Pages 1335-1343. https://doi.org/10.24963/ijcai.2019/185

Human-aware planning involves generating plans that are explicable as well as providing explanations when such plans cannot be found. In this paper, we bring these two concepts together and show how an agent can achieve a trade-off between these two competing characteristics of a plan. In order to achieve this, we conceive a first of its kind planner MEGA that can augment the possibility of explaining a plan in the plan generation process itself. We situate our discussion in the context of recent work on explicable planning and explanation generation and illustrate these concepts in two well-known planning domains, as well as in a demonstration of a robot in a typical search and reconnaissance task. Human factor studies in the latter highlight the usefulness of the proposed approach.
Keywords:
Humans and AI: Human-AI Collaboration
Agent-based and Multi-agent Systems: Human-Agent Interaction