Physical learning beyond the quasistatic limit
Physical learning beyond the quasistatic limit
复制标题
超越准静态极限的物理学习
DOI:
10.1103/physrevresearch.4.l022037
复制
发表时间:
2022
影响因子:
4.2
通讯作者:
Liu, Andrea J.
中科院分区:
文献类型:
--
作者:
Stern, Menachem;Dillavou, Sam;Miskin, Marc Z.;Durian, Douglas J.;Liu, Andrea J.
Physical networks, such as biological neural networks, can learn desired functions without a central processor, usinglocallearning rules in space and time to learn in a fully distributed manner. Learning approaches such as equilibrium propagation, directed aging, and coupled learning similarly exploit local rules to accomplish learning in physical networks such as mechanical, flow, or electrical networks. In contrast to certain natural neural networks, however, such approaches have so far been restricted to the quasistatic limit, where they learn on timescales slow compared to their physical relaxation. This quasistatic constraint slows down learning, limiting the use of these methods as machine learning algorithms, and potentially restricting physical networks that could be used as learning platforms. Here we explore learning in an electrical resistor network that implements coupled learning, both in the laboratory and on the computer, at rates that range from slow to far above the quasistatic limit. We find that up to a critical threshold in the ratio of the learning rate to the physical rate of relaxation, learning speeds up without much change of behavior or error. Beyond the critical threshold, the error exhibits oscillatory dynamics but the networks still learn successfully.
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影响因子:
4.6
作者:
Dillavou, Sam;Stern, Menachem;Durian, Douglas J.
通讯作者:
Durian, Douglas J.
影响因子:
16.6
作者:
Stern M;Jayaram V;Murugan A
通讯作者:
Murugan A
影响因子:
3.4
作者:
Nidhi Pashine
通讯作者:
Nidhi Pashine
DOI:
--
发表时间:
2022
期刊:
ArXiv
影响因子:
--
作者:
J. F. Wycoff;Sam Dillavou;M. Stern;Andrea J. Liu;D. Durian
通讯作者:
D. Durian
DOI:
10.1073/pnas.2000807117
发表时间:
2020
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
作者:
M. Stern;Chukwunonso Arinze;Leron Perez;S. Palmer;A. Murugan
通讯作者:
A. Murugan