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Perspective-Shifted Neuro-Symbolic World Models: A Framework for Socially-Aware Robot Navigation

Created by
  • Haebom

Author

Kevin Alcedo, Pedro U. Lima, Rachid Alami

Outline

In this paper, we propose a neuro-symbolic model-based reinforcement learning architecture for navigation in human-collaborating environments. Navigation considering human interaction can be expressed as a partially observable Markov decision process (POMDP), which implies that we need to infer the hidden beliefs of others. Inspired by the Theory of Mind and Epistemic Planning, we present a neuro-symbolic model-based reinforcement learning architecture for solving the belief tracking problem in partially observable environments, and a perspective-shifting operator for belief estimation leveraging influence-based abstraction (IBA) in a structured multi-agent setting.

Takeaways, Limitations

Takeaways:
We present a novel neuro-symbolic model-based reinforcement learning approach to the problem of social navigation in partially observable environments.
Integrating theory of mind and cognitive planning into reinforcement learning to enhance social situation awareness.
An efficient belief estimation method using influence-based abstraction (IBA) is presented.
Limitations:
Additional experiments and analysis are needed to determine the generalization performance and scalability of the proposed model.
There is a need to evaluate the adaptability of models to complex social situations and diverse human behaviors.
Applicability and safety in real environments need to be verified.
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