Robust Planning for Autonomous Driving via Mixed Adversarial Diffusion Predictions

• URL: http://arxiv.org/abs/2505.12327v1
• Date: Sun, 18 May 2025 09:44:57 GMT
• Title: Robust Planning for Autonomous Driving via Mixed Adversarial Diffusion Predictions
• Authors: Albert Zhao, Stefano Soatto,
• Abstract summary: We describe a robust planning method for autonomous driving that mixes normal and adversarial agent predictions.<n>We generate a distribution of adversarial predictions by biasing the diffusion model at test time to generate predictions that are likely to collide with a candidate plan.<n>We show the effectiveness of our method on single-agent and multi-agent jaywalking scenarios as well as a red light violation scenario.
• Score: 51.88828388720111
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We describe a robust planning method for autonomous driving that mixes normal and adversarial agent predictions output by a diffusion model trained for motion prediction. We first train a diffusion model to learn an unbiased distribution of normal agent behaviors. We then generate a distribution of adversarial predictions by biasing the diffusion model at test time to generate predictions that are likely to collide with a candidate plan. We score plans using expected cost with respect to a mixture distribution of normal and adversarial predictions, leading to a planner that is robust against adversarial behaviors but not overly conservative when agents behave normally. Unlike current approaches, we do not use risk measures that over-weight adversarial behaviors while placing little to no weight on low-cost normal behaviors or use hard safety constraints that may not be appropriate for all driving scenarios. We show the effectiveness of our method on single-agent and multi-agent jaywalking scenarios as well as a red light violation scenario.

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