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SmoothVLA: Aligning Vision-Language-Action Models with Physical Constraints via Intrinsic Smoothness Optimization
π€AI Summary
Researchers introduce SmoothVLA, a new reinforcement learning framework that improves robot control by optimizing both task performance and motion smoothness. The system addresses the trade-off between stability and exploration in Vision-Language-Action models, achieving 13.8% better smoothness than standard RL methods.
Key Takeaways
- βSmoothVLA combines binary task rewards with continuous trajectory smoothness optimization for better robot control.
- βThe framework uses intrinsic rewards computed directly from policy rollouts without requiring external environment feedback.
- βTesting on LIBERO benchmark shows 13.8% improvement in smoothness over standard reinforcement learning methods.
- βThe approach bridges the gap between supervised fine-tuning's limited generalization and RL's erratic movement patterns.
- βGroup Relative Policy Optimization (GRPO) is leveraged to establish trajectory smoothness as an explicit optimization prior.
#robotics#reinforcement-learning#vision-language-models#ai-research#trajectory-optimization#smooth-vla#grpo#libero-benchmark
Read Original βvia arXiv β CS AI
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