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Online Informative Path Planning of Autonomous Vehicles Using Kernel-Based Bayesian Optimization
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DOI：10.1109/TCSII.2024.3368081.png)
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摘要
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To improve environmental information gathering of intelligent vehicles in unknown scenes, this brief presents a hierarchical online informative path planning (IPP) framework containing global action optimization and local path planning. Particularly, we propose a lightweight kernel-based Bayesian optimization for IPP (KBO-IPP) to facilitate highly efficient information utility evaluation and decision-making of control actions. Specifically, KBO-IPP can infer the exact environmental mutual information (MI) and associated uncertainties with an approximate logarithmic complexity, eliminating the need for explicit model training. We develop a new information-theoretic objective function consisting of travel cost and predicted MI values with uncertainties to achieve the balance between high MI values (exploitation) and high prediction variances (exploration). To enhance the optimality of IPP, the past unselected informative actions are also incorporated into the global Bayesian optimization. Online real-world experiments validate that our proposed method shows higher efficiency with comparable performance to modern methods in unknown, complex environments.
Keyword:
Optimization
Bayes methods
Training
Planning
Decision making
Costs
Uncertainty
Informative path planning
mutual information
Bayesian optimization
kernel inference
intelligent vehicle
期刊
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IF:
4.9
论文数:
8.8K
被引数:
2.5W
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