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2025 ; 16
(1
): 9192
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Noise-aware training of neuromorphic dynamic device networks
#MMPMID41102189
Manneschi L
; Vidamour IT
; Stenning KD
; Swindells C
; Venkat G
; Griffin D
; Gui L
; Sonawala D
; Donskikh D
; Hariga D
; Donati E
; Stepney S
; Branford WR
; Gartside JC
; Hayward TJ
; Ellis MOA
; Vasilaki E
Nat Commun
2025[Oct]; 16
(1
): 9192
PMID41102189
show ga
In materio computing offers the potential for widespread embodied intelligence by
leveraging the intrinsic dynamics of complex systems for efficient sensing,
processing, and interaction. While individual devices offer basic data processing
capabilities, networks of interconnected devices can perform more complex and
varied tasks. However, designing such networks for dynamic tasks is challenging
in the absence of physical models and accurate characterization of device noise.
We introduce the Noise-Aware Dynamic Optimization (NADO) framework for training
networks of dynamical devices, using Neural Stochastic Differential Equations
(Neural-SDEs) as differentiable digital twins to capture both the dynamics and
stochasticity of devices with intrinsic memory. Our approach combines
backpropagation through time with cascade learning, enabling effective
exploitation of the temporal properties of physical devices. We validate this
method on networks of spintronic devices across both temporal classification and
regression tasks. By decoupling device model training from network connectivity
optimization, our framework reduces data requirements and enables robust,
gradient-based programming of dynamical devices without requiring analytical
descriptions of their behaviour.