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Title: Ergodicity, lack thereof, and the performance of reservoir computing with memristive networks

Journal Article · · Nano Express

Abstract Networks composed of nanoscale memristive components, such as nanowire and nanoparticle net-works, have recently received considerable attention because of their potential use as neuromorphic devices. In this study, we explore ergodicity in memristive networks, showing that the performance on machine leaning tasks improves when these networks are tuned to operate at the edge between two global stability points. We find this lack of ergodicity is associated with the emergence of memory in the system. We measure the level of ergodicity using the Thirumalai-Mountain metric, and we show that in the absence of ergodicity, two different memristive network systems show improved performance when utilized as reservoir computers (RC). We highlight that it is also important to let the system synchronize to the input signal in order for the performance of the RC to exhibit improvements over the baseline.

Sponsoring Organization:
USDOE
OSTI ID:
2323572
Alternate ID(s):
OSTI ID: 2305545
Journal Information:
Nano Express, Journal Name: Nano Express Vol. 5 Journal Issue: 1; ISSN 2632-959X
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United Kingdom
Language:
English

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