Financial Performance Management System and Wireless Sharing Network Optimization of Listed Enterprises under BPNN

Table 1

PEIS of listed enterprises.

First-grade indexes	Second-grade indexes	Calculation equations
Profitability	Net asset return	Net profit/net assets
	Cost rate of the main business	Cost/net income of the main business
	Price-to-earnings ratio	Market price per share/earnings per share per year
	Asset-to-liability ratio	Total liabilities/total assets × 100%
	Inventory turnover rate
	The income growth rate of the main business	(Current income of the main business − the last income of the main business)/the last income of the main business × 100%