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The paper uses a learned, end-to-end planner that forecasts occupancy and predicts a distribution over clearance, trained with a risk cost tied to observed collisions. Its central contribution is a learning method for uncertainty-aware control, not just a robotics system. Readers should note that the evidence is closed-loop simulation with up to 45 pedestrians, so real-world transfer and sensor-noise robustness remain open questions.
Source coveringarXiv

Don't Risk It!: Trajectory-Conditioned Distributional Risk for LiDAR-Only Crowd Navigation

arXiv2 min read

arXiv:2610.40050v1 Announce Type: new Abstract: Efficient crowd navigation requires anticipating dynamic collision-free space without relying on fragile object tracking. We propose the Don't Risk It Planner (DRIP), an end-to-end LiDAR-only planning framework that couples occupancy forecasting with trajectory-conditioned clearance and uncertainty estimation. Operating directly on LiDAR-derived occupancy grid histories, DRIP predicts a distribution over minimum robot-obstacle clearance for candidate control sequences to evaluate collision risk. The model is trained using a risk cost that grounds predictive uncertainty directly in empirical collision outcomes rather than geometric regression alone. In closed-loop experiments with up to 45 pedestrians, DRIP achieves higher success rates with fewer collisions and reduced freezing behavior compared to state-of-the-art baselines.

Title:Don't Risk It!: Trajectory-Conditioned Distributional Risk for LiDAR-Only Crowd Navigation

Abstract:Efficient crowd navigation requires anticipating dynamic collision-free space without relying on fragile object tracking. We propose the Don't Risk It Planner (DRIP), an end-to-end LiDAR-only planning framework that couples occupancy forecasting with trajectory-conditioned clearance and uncertainty estimation. Operating directly on LiDAR-derived occupancy grid histories, DRIP predicts a distribution over minimum robot-obstacle clearance for candidate control sequences to evaluate collision risk. The model is trained using a risk cost that grounds predictive uncertainty directly in empirical collision outcomes rather than geometric regression alone. In closed-loop experiments with up to 45 pedestrians, DRIP achieves higher success rates with fewer collisions and reduced freezing behavior compared to state-of-the-art baselines.

Robotics (cs.RO)

arXiv:2610.40050 [cs.RO]

(or arXiv:2610.40050v1 [cs.RO] for this version)

https://doi.org/10.48550/arXiv.2610.40050 Focus to learn more arXiv-issued DOI via DataCite

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Full text under the publisher's open licence · 207 words