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Shanghai Jiao Tong University and others propose VaM: using value prediction for task-progress memory, achieving over 95% success rate in 4-hour continuous carton assembly

Shanghai Jiao Tong University, Shanghai Innovation Institute, and others propose Value as Memory (VaM), which feeds the recent prediction sequence of a value model into the action policy as task-progress memory, combined with an offline-to-online real-robot reinforcement learning pipeline. In a carton assembly task, VaM ran autonomously and continuously for 4 hours with a task success rate above 95%. Ablations show that compared with a version without the value cache, the final task success rate improved by 29.4%; the online RL approach improved average success rate by 32.8% across three tasks and reduced the real-world time cost per gradient step by 57.8% on average.

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