An Eco-Inefficiency Dominance Probability Approach for Chinese Banking Operations Based on Data Envelopment Analysis

Table 2

Input and output variables.

Input/output	Variable	Notation	Unit
Inputs	Employment	x1	Person count
	Fixed assets	x2	Million yuan
	Operation costs	x3	Million yuan
Desirable outputs	Interest income	y1	Million yuan
	Noninterest income	y2	Million yuan
Undesirable outputs	Bad debt percentage	z1	Percentage