Construction of a Fundamental Quantitative Evaluation Model of the A-Share Listed Companies Based on the BP Neural Network

Table 5

Part of training results of BP neural network.

Sample	Expected output	Actual output	Relative error (%)
TR1	53.73083	53.73004	0.00147
TR2	50.00218	50.00140	0.00157
TR3	46.79068	46.79015	0.00113
TR4	51.67963	51.67902	0.00119
TR5	33.12191	33.12213	0.00064
TR6	49.96475	49.96402	0.00145
TR7	53.76107	53.76060	0.00088
TR8	42.72477	42.72418	0.00138
TR9	44.14657	44.14600	0.00130
TR10	51.30777	51.30702	0.00146
TR11	47.05807	47.05735	0.00154
TR12	38.52720	38.52665	0.00144
TR13	49.56071	49.55982	0.00179
TR14	55.86725	55.86679	0.00083
TR15	48.76789	48.76711	0.00159
TR16	35.99980	36.00023	0.00119
TR17	61.00887	61.00867	0.00033
TR18	54.59437	54.59362	0.00137
TR19	48.13704	48.13696	0.00018
TR20	57.71973	57.71944	0.00052