Papers › An intelligent tutor for planning in large partially observable environments
An intelligent tutor for planning in large partially observable environments
Lovis Heindrich, Saksham Consul, Falk Lieder
AI can not only outperform people in many planning tasks, but it can also teach them how to plan better. A recent and promising approach to improving human decision-making is to create intelligent tutors that utilize AI to discover and teach optimal planning strategies automatically. Prior work has shown that this approach can improve planning in artificial, fully observable planning tasks. Unlike these artificial tasks, the world is only partially observable. To bridge this gap, we developed and evaluated the first intelligent tutor for planning in partially observable environments. Compared to previous intelligent tutors for teaching planning strategies, this novel intelligent tutor combines two innovations: 1) a new metareasoning algorithm for discovering optimal planning strategies for large, partially observable environments, and 2) scaffolding the learning processing by having the learner choose from an increasing larger set of planning operations in increasingly larger planning problems. We found that our new strategy discovery algorithm is superior to the state-of-the-art. A preregistered experiment with 330 participants demonstrated that the new intelligent tutor is highly effective at improving people's ability to make good decisions in partially observable environments. This suggests our human-centered tutoring approach can successfully boost human planning in complex, partially observable sequential decision problems, a promising step towards using AI-powered intelligent tutors to improve human planning in the real world.
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