Intelligent Data Mining Based on Market Circulation of Production Factors

Table 2

List of variable relations and meanings.

Variable type	Variable meaning	Variable value and method description
Dependent variable	Enterprise market performance	Market value/total assets at the end of the year
	Corporate financial performance	Main business income-main business cost/main business income
Independent variable	R&D investment intensity	R&D investment/operating income
Categorical variables	Capital labor ratio	Fixed assets/labor force
	Proportion of fixed assets	Net fixed assets/total assets
	Proportion of R&D expenses	R&D expenses/product production costs
	Proportion of R&D personnel	Number of R&D personnel/total number of employees
Control variable	Enterprise size	Natural logarithm of the company’s total assets
	Assets and liabilities	Total liabilities/total assets