"Retraction notice to "Quantitative analysis of portfolio based on ..."

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DOI: 10.1016/J.COGSYS.2019.04.005

access: closed

type: Journal Article

metadata version: 2020-02-19

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Retraction notice to "Quantitative analysis of portfolio based on optimized BP neural network" [Cogn. Syst. Res. 52 (2018) 709-714]. Cogn. Syst. Res. 56: 264 (2019)

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