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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
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2019
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Article
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Fig 11
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Research Article
Nickel Price Forecast Based on the LSTM Neural Network Optimized by the Improved PSO Algorithm
Figure 11
The (a) autocorrelation graph, (b) partial autocorrelation graph, and (c) QQ graph of the residual sequence.
(a)
(b)
(c)