A space–time tradeoff for implementing a function with master equation dynamics
A space–time tradeoff for implementing a function with master equation dynamics
复制标题
实现具有主方程动力学的函数的时空权衡
DOI:
10.1038/s41467-019-09542-x
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发表时间:
2019
影响因子:
16.6
通讯作者:
Owen, Jeremy A.
中科院分区:
文献类型:
--
作者:
Wolpert, David H.;Kolchinsky, Artemy;Owen, Jeremy A.
Master equations are commonly used to model the dynamics of physical systems, including systems that implement single-valued functions like a computer’s update step. However, many such functions cannot be implemented by any master equation, even approximately, which raises the question of how they can occur in the real world. Here we show how any function over some “visible” states can be implemented with master equation dynamics—if the dynamics exploits additional, “hidden” states at intermediate times. We also show that any master equation implementing a function can be decomposed into a sequence of “hidden” timesteps, demarcated by changes in what state-to-state transitions have nonzero probability. In many real-world situations there is a cost both for more hidden states and for more hidden timesteps. Accordingly, we derive a “space–time” tradeoff between the number of hidden states and the number of hidden timesteps needed to implement any given function.
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DOI:
10.1007/bf00532720
发表时间:
1973
期刊:
Zeitschrift für Wahrscheinlichkeitstheorie und Verwandte Gebiete
影响因子:
--
作者:
S. Johansen
通讯作者:
S. Johansen
DOI:
10.1017/s0308210500025531
发表时间:
1984
期刊:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics
影响因子:
--
作者:
J. Howie
通讯作者:
J. Howie
影响因子:
64.8
作者:
Berut, Antoine;Arakelyan, Artak;Lutz, Eric
通讯作者:
Lutz, Eric
影响因子:
2.4
作者:
P. Lencastre;F. Raischel;T. Rogers;P. Lind
通讯作者:
P. Lind
影响因子:
2.6
作者:
Hasegawa, H. -H.;Ishikawa, J.;Driebe, D. J.
通讯作者:
Driebe, D. J.