Preemptive Goal Programming Solution

Preemptive Goal Programming Solution Supplier Allocation... 

Preemptive Goal Programming Solution Inventory Decision... 

The objectives considered in the multi-criteria model conflicted with one another. Non-preemptive goal programming with ideal values as targets was used to obtain the best possible solution that represented the decision makers preferences. Because the criteria were conflicting, it was not possible to achieve any of the ideal values. Table 5.6 shows how much of each criterion was achieved and the percent difference from the ideal values for Scenarios 6 and 8. As can be observed, in both scenarios, the power objective was almost fully met but the credit performance was not met very much at all. This happened because very few customers had low ratings (two customers had power ratings below 5 out of 10 and two had credit performance ratings below 5 as well) and two of them were selected. 

This section discusses the solution techniques for solving the proposed multicriteria optimization model. To solve the multiple and conflicting objectives model, we use preemptive goal programming (P-GP), non-preemptive goal programming (NP-GP), and the interactive method. 

All four goal programming models (Preemptive, Non-Preemptive, Tchebycheff, and Fuzzy) are used to solve the supplier order allocation problem. Each model produces a different optimal solution. They are discussed next. 

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