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

Table 4

Calculation results of the weight of each indicator.

Level 1 indicator	Level 2 indicator	Symbol	Initial weight
Solvency	Asset-liability ratio	X1	6.79241
	Current ratio	X2	7.08412
	Quick ratio	X3	8.28635
	Cash flow ratio	X4	7.45493
Growth ability	Growth rate of operating income	X5	7.58143
	Growth rate of net profit	X6	7.61459
Operation ability	Inventory turnover rate	X7	7.04270
	Turnover rate of accounts receivable	X8	6.98549
Profitability	Return on net assets	X10	8.22696
	Net profit rate of sales	X11	7.75891
	Expense rate during sales period	X12	8.09567
	Operating cost rate	X13	8.41013
Periodic judgment	Corporate cycle judgment	X14	8.66630