The second method, with the help of bp neural network's nonlinear mapping ability and adaptive ability to simulate the complex nonlinear relationship between the input factors and output factors in the actual production of yarn, takes the key process factors and raw cotton quality factors as input variables, designs the yarn quality prediction method based on the three-layer BP neural network and the yarn mass prediction method based on the four-layer BP neural network, and compares and analyzes the prediction effect of the two prediction methods.
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