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Following publication of the original article [1], the authors reported an error in the title and body text. The word "Grey" has been misspelt as "Gray".
The correct word "Grey" has been provided in this Correction.
The title name has revised to “Improvement of Grey System Model using Particle Swarm Optimization”. The original article [1] has been updated.
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Twumasi E, Frimpong EA, Kwegyir D et al (2021) Improvement of gray system model using particle swarm optimization. J Electr Syst Inf Technol 8:12. https://doi.org/10.1186/s43067-021-00036-9
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Twumasi, E., Frimpong, E.A., Kwegyir, D. et al. Correction to: Improvement of Grey System Model using Particle Swarm Optimization. Journal of Electrical Systems and Inf Technol 8, 14 (2021). https://doi.org/10.1186/s43067-021-00037-8
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DOI: https://doi.org/10.1186/s43067-021-00037-8