Maximizing E-Tailers’ Sales Volume through the Shipping-Fee Discount and Product Recommendation System

Table 2

Decision variables.

Variable name	Description
	The discount rate of shipping fee
	The decision variable, which is 1 if the e-tailer recommends and is 0 otherwise
	The decision variable, which is 1 if the customer buys and is 0 otherwise
	The decision variable, which is 1 if the customer buys and is 0 otherwise
	The decision variable, which is 1 if the e-tailer recommends and is 0 otherwise
	The decision variable, which is 1 if the e-tailer recommends and is 0 otherwise
	The decision variable, which is 1 if the customer buys and is 0 otherwise
	The decision variable, which is 1 if the customer buys and is 0 otherwise