Market Risk Early Warning Based on Deep Learning and Fruit Fly Optimization

Table 1

Index selection.

Index type	Index name
Debt paying ability	Current ratio (X1)
	Quick ratio (X2)
	Net asset-liability ratio (X3)
Operation ability	Fixed asset turnover ratio(X4)
	Total asset turnover ratio (X5)
	Receivable turnover ratio (X6)
Profit ability	Return on net assets (X7)
	Return on total assets (X8)
	Net interest rate in sale (X9)
Growth ability	Growth rate of basic earnings per share (X10)
	Growth rate of total operating revenue (X11)
	Operating profit growth rate (X12)
	Growth rate of net assets (X13)
Index per share	Earning per share (X14)
	Net assets per share (X15)
	Retained earnings per share (X16)
	Operating revenue per share (X17)
Asset structure	Asset-liability ratio (X18)
	Rights multiple (X19)
	Capital fixed ratio (X20)