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🧠 AI🟢 BullishImportance 7/10

Fine-tuning is Not Enough: A Parallel Framework for Collaborative Imitation and Reinforcement Learning in End-to-end Autonomous Driving

arXiv – CS AI|Zhexi Lian, Haoran Wang, Xuerun Yan, Weimeng Lin, Xianhong Zhang, Yongyu Chen, Jia Hu|
🤖AI Summary

Researchers propose PaIR-Drive, a new parallel framework that combines imitation learning and reinforcement learning for autonomous driving, achieving 91.2 PDMS performance on NAVSIMv1 benchmark. The approach addresses limitations of sequential fine-tuning by running IL and RL in parallel branches, enabling better performance than existing methods.

Key Takeaways
  • PaIR-Drive separates imitation learning and reinforcement learning into parallel branches to avoid policy drift issues in sequential training.
  • The framework achieved competitive performance of 91.2 PDMS and 87.9 EPDMS on NAVSIM benchmarks, outperforming existing RL fine-tuning methods.
  • A tree-structured trajectory neural sampler enhances exploration capability in the reinforcement learning branch.
  • The approach can correct suboptimal human driving behaviors and generate high-quality trajectories.
  • The parallel design eliminates the need to retrain RL components when applying new imitation learning policies.
Read Original →via arXiv – CS AI
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