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Hi-Drive: Hierarchical POMDP Planning for Safe Autonomous Driving in Diverse Urban Environments

Created by
  • Haebom

Author

Xuanjin Jin, Chendong Zeng, Shengfa Zhu, Chunxiao Liu, Panpan Cai

Outline

Hi-Drive is an algorithm that uses a hierarchical Partially Observable Markov Decision Process (POMDP) to address uncertainty in autonomous driving behavior and trajectory planning. It utilizes a driver model to represent the uncertain behavioral intentions of other vehicles and infers hidden driving styles using driver model parameters. This method effectively manages the complexity of the POMDP by treating the driver model as a high-level decision-making behavior. Hi-Drive also integrates importance sampling-based trajectory optimization to improve trajectories through comprehensive analysis of key agents. Evaluation on a real-world urban driving dataset demonstrates that Hi-Drive outperforms existing planning-based and learning-based methods in a variety of urban driving situations.

Takeaways, Limitations

Takeaways:
Effectively handling uncertainty in action and trajectory planning for autonomous driving.
Manage complexity by leveraging hierarchical POMDP.
Predict the behavior of other vehicles using driver models.
Enhanced safety through importance sampling-based trajectory optimization.
It outperforms existing methods on real datasets.
Limitations:
The specific Limitations is not specified in the paper.
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