arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2109.01288cs.RO
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交互式自动驾驶的迭代模仿策略改进

Iterative Imitation Policy Improvement for Interactive Autonomous Driving

The Hong Kong University of Science and Technology(香港科技大学);University of California, Berkeley(加州大学伯克利分校)

Zhao-Heng Yin, Chenran Li, Liting Sun, Masayoshi Tomizuka, Wei Zhan

摘要:

我们提出了一个模仿学习系统的自动驾驶在城市交通的互动。我们训练一个行为克隆(BC)策略来模仿从真实城市交通中收集的驾驶行为,并应用数据聚合算法来迭代地改进其性能。在这种情况下应用数据聚合面临两个挑战。第一个挑战是在真实的城市交通中收集在线推出数据是昂贵和危险的。在模拟器(如CARLA)中创建类似的交通场景以进行在线部署收集也很困难。相反,我们建议从训练数据集创建一个弱模拟器,其中所有周围的车辆都遵循数据集提供的数据轨迹。我们发现,在这样的模拟器中收集的在线数据仍然可以用来提高BC策略的性能。第二个挑战是在线推出期间人工标签过程的繁琐和耗时。为了解决这个问题,我们使用一个$^*$规划器作为一个伪专家提供专家一样的演示。我们在真实的城市交通场景中验证了我们提出的模仿学习系统。实验结果表明,我们的系统可以显着提高基线BC策略的性能。

英文摘要:

We propose an imitation learning system for autonomous driving in urban traffic with interactions. We train a Behavioral Cloning~(BC) policy to imitate driving behavior collected from the real urban traffic, and apply the data aggregation algorithm to improve its performance iteratively. Applying data aggregation in this setting comes with two challenges. The first challenge is that it is expensive and dangerous to collect online rollout data in the real urban traffic. Creating similar traffic scenarios in simulator like CARLA for online rollout collection can also be difficult. Instead, we propose to create a weak simulator from the training dataset, in which all the surrounding vehicles follow the data trajectory provided by the dataset. We find that the collected online data in such a simulator can still be used to improve BC policy's performance. The second challenge is the tedious and time-consuming process of human labelling process during online rollout. To solve this problem, we use an A$^*$ planner as a pseudo-expert to provide expert-like demonstration. We validate our proposed imitation learning system in the real urban traffic scenarios. The experimental results show that our system can significantly improve the performance of baseline BC policy.

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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