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. 2021 Dec 5;115:108190. doi: 10.1016/j.asoc.2021.108190

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© 2021 The Authors

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 4 — Results of the second experiment after 5 independent repetitions. (a) Mean $\pm$ standard deviation training accuracy. (b) Mean $\pm$ standard deviation validation accuracy. (c) Mean $\pm$ standard deviation training loss. (d) Mean $\pm$ standard deviation validation loss. A logarithmic scale has been set to correctly display the loss values for a better understanding of the results.