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Physical Time as a Missing Dimension of Robot Policy Memory Dynamics

Existing robot policy memories typically evolve with observation sequences, implicitly treating each update as the same amount of physical time. This paper introduces Temporal Flow Policy (TFP), which learns memory dynamics to retain past events and evolve the memory state over measured time intervals. Experiments show that successful timing depends on both measured intervals and retained history.

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PublishedOctober 14, 2026Yushen Liang, Yue Peng, Baosheng Jin
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WHY IT MAY MATTER

TFP can improve the accuracy of temporal actions in robots by considering physical time in memory.

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