Rate-Informed Discovery via Bayesian Adaptive Multifidelity Sampling

Aman Sinha, Payam Nikdel, Supratik Paul, Shimon Whiteson

Keywords: Autonomous Driving, Rare-event Simulation, Adaptive Sampling

TL;DR: We present a method that efficiently estimates autonomous vehicle safety and performs targeted discovery of high-impact failure cases.

Abstract: Ensuring the safety of autonomous vehicles (AVs) requires both accurate estimation of their performance and efficient discovery of potential failure cases. This paper introduces Bayesian adaptive multifidelity sampling (BAMS), which leverages the power of adaptive Bayesian sampling to achieve efficient discovery while simultaneously estimating the rate of adverse events. BAMS prioritizes exploration of regions with potentially low performance, leading to the identification of novel and critical scenarios that traditional methods might miss. Using real-world AV data we demonstrate that BAMS discovers 10 times as many issues as Monte Carlo (MC) and importance sampling (IS) baselines, while at the same time generating rate estimates with variances 15 and 6 times narrower than MC and IS baselines respectively.

Student Paper: no

Submission Number: 379