Research Article

A Financial Risk Early Warning of Listed Companies Based on PCA and BP Neural Network

Table 4

Measurement errors for different numbers of hidden layers neurons.

NumbersTraining errorTest errorTotal error

14.94683.03617.983
25.99123.58119.5723
34.45223.81468.2668
44.45224.51538.9675
54.28733.89258.1798
61.97873.03615.0149
73.40783.73687.1446
83.79264.51538.3079
92.03374.6716.7047
103.1883.42546.6134
113.35293.89257.2454
121.37413.50324.8774
131.81383.89255.7063
142.63831.71274.351
150.87942.95833.8377
162.25363.34755.6011
171.42913.26974.6988
181.5393.34754.8866
191.97874.04826.0269
202.19863.19185.3904