Table 2

Mathematical formulation of the linear optimization problem

Decision variableLet xij be the flow of milk from dairy farm i to dairy j
Objective functionMinimize: ∑i=1n∑j=1ncij*xij , where cij represents the transportation cost from dairy farm i to j
Supply constraintThe total milk supplied by each dairy farm should not exceed its capacity: ∑j=1nxij≤supplyi , for all i
Demand constraintThe total milk demanded by each dairy should be met: ∑i=1nxij=demandj , for all j

Source(s): Table created by the authors

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