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arXiv 2003.02746cs.RO
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基于引导分支的自动驾驶不确定性决策

Efficient Uncertainty-aware Decision-making for Automated Driving Using Guided Branching

Hong Kong University of Science and Technology(香港科技大学)

Lu Zhang, Wenchao Ding, Jing Chen, Shaojie Shen

摘要:

由于其他交通参与者的潜在随机行为和感知不确定性(例如,跟踪噪声和预测误差等)。虽然部分可观测马尔可夫决策过程(POMDP)提供了一个系统的方法来纳入这些不确定性,它很快成为计算棘手的规模时,现实世界的大规模问题。在本文中,我们提出了一个有效的不确定性感知决策(EUDM)框架,实时生成长期的横向和纵向行为在复杂的驾驶环境。通过两种新的技术,即特定领域的闭环策略树(DCP-Tree)结构和条件聚焦分支(CFB)机制,将计算复杂度控制在适当的水平。其核心思想是利用特定领域的专家知识来指导行为和意图空间中的分支。所提出的框架进行了验证,使用车载传感数据捕获的真实车辆和交互式多智能体仿真平台。我们还发布了框架的代码以适应基准测试。

英文摘要:

Decision-making in dense traffic scenarios is challenging for automated vehicles (AVs) due to potentially stochastic behaviors of other traffic participants and perception uncertainties (e.g., tracking noise and prediction errors, etc.). Although the partially observable Markov decision process (POMDP) provides a systematic way to incorporate these uncertainties, it quickly becomes computationally intractable when scaled to the real-world large-size problem. In this paper, we present an efficient uncertainty-aware decision-making (EUDM) framework, which generates long-term lateral and longitudinal behaviors in complex driving environments in real-time. The computation complexity is controlled to an appropriate level by two novel techniques, namely, the domain-specific closed-loop policy tree (DCP-Tree) structure and conditional focused branching (CFB) mechanism. The key idea is utilizing domain-specific expert knowledge to guide the branching in both action and intention space. The proposed framework is validated using both onboard sensing data captured by a real vehicle and an interactive multi-agent simulation platform. We also release the code of our framework to accommodate benchmarking.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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