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

Table 2

Selection of indicators.

Level 1 indicator	Level 2 indicator	Evaluation method	Symbol
Solvency	Asset-liability ratio	Moderate analysis method evaluation	X1
	Current ratio	Forward standardization evaluation	X2
	Quick ratio	Forward standardization evaluation	X3
	Cash flow ratio	Forward standardization evaluation	X4
Growth ability	Growth rate of operating income	Ranking method evaluation	X5
	Growth rate of net profit	Ranking method evaluation	X6
Operation ability	Inventory turnover rate	Forward standardization evaluation	X7
	Turnover rate of accounts receivable	Forward standardization evaluation	X8
	Turnover rate of total assets	Forward standardization evaluation	X9
Profitability	Return on net assets	Forward standardization evaluation	X10
	Net profit rate of sales	Forward standardization evaluation	X11
	Expense rate during sales period	Inverse standardization evaluation	X12
	Operating cost rate	Inverse standardization evaluation	X13
Periodic judgment	Corporate cycle judgment	Life cycle assessment	X14