Research on the Impact of Environmental Regulation on Enterprise Innovation from the Perspective of Official Communication

Table 1

Enterprise innovation evaluation system.

Factor analysis	Code name	Evaluation indicators
Input F1	X1	Enterprise R&D input intensity
	X2	R&D personnel as a percentage of all staff
Quality F2	X3	The proportion of invention patent applications in total patent applications
	X4	Number of patent authorizations as a proportion of patent applications