arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.01197cs.ROcs.LG
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学习碰撞:一种自适应安全关键场景生成方法

Learning to Collide: An Adaptive Safety-Critical Scenarios Generating Method

Carnegie Mellon University(卡内基梅隆大学);Tsinghua University(清华大学)

Wenhao Ding, Baiming Chen, Minjun Xu, Ding Zhao

摘要:

当自动驾驶算法应用于现实世界时,长尾和罕见事件问题变得至关重要。为了在具有挑战性的设置评估系统的目的,我们提出了一个生成框架,以创建安全关键的情况下,评估特定的任务算法。我们首先代表的交通场景与一系列的自回归积木,并产生不同的情况下,从这些块的联合分布采样。然后,我们训练生成模型作为代理(或生成器),以调查正在评估的给定驾驶算法的风险分布参数。我们把任务算法看作是一个环境(或一个代理),当生成一个有风险的场景时,它会向代理返回一个奖励。通过在模拟中的几个场景进行的实验,我们证明了所提出的框架生成的安全关键的情况下,更有效地比网格搜索或人类的设计方法。该方法的另一个优点是它对路线和参数的适应性。

英文摘要:

Long-tail and rare event problems become crucial when autonomous driving algorithms are applied in the real world. For the purpose of evaluating systems in challenging settings, we propose a generative framework to create safety-critical scenarios for evaluating specific task algorithms. We first represent the traffic scenarios with a series of autoregressive building blocks and generate diverse scenarios by sampling from the joint distribution of these blocks. We then train the generative model as an agent (or a generator) to investigate the risky distribution parameters for a given driving algorithm being evaluated. We regard the task algorithm as an environment (or a discriminator) that returns a reward to the agent when a risky scenario is generated. Through the experiments conducted on several scenarios in the simulation, we demonstrate that the proposed framework generates safety-critical scenarios more efficiently than grid search or human design methods. Another advantage of this method is its adaptiveness to the routes and parameters.

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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