Additive Slack-Based Measure for a Two-Stage Structure with Shared Inputs and Undesirable Feedback

Table 1

Notations.

	Number of inputs of stage 1
	Number of shared inputs of both stages
	Number of undesirable feedback inputs of stage 1
	Number of undesirable intermediate products
	Number of final output of stage 1
	Exogenous inputs of stage 2
	Number of final outputs of stage 2
	Input of the first stage
	Shared input of stage 1
	Undesirable feedback input
	Intermediate product
	Final output of stage 1
	Shared input of stage 2
	Exogenous input of stage 2
	Final output of stage 2
	Weight parameter