AIBullisharXiv – CS AI · 6h ago7/10
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What Matters in Orchestrating Robot Policies: A Systematic Study of Hierarchical VLA Agents
Researchers present a systematic study of hierarchical vision-language-action (Hi-VLA) systems that combine high-level language model planners with low-level robot controllers for complex manipulation tasks. The work establishes unified design principles for building these hierarchical robotic agents and demonstrates that thoughtfully designed hierarchical systems significantly outperform both flat VLA approaches and naive implementations across simulation and real-world robot experiments.