Optimization and Decision Support Systems for Supply Chains by Ana Paula Barbosa Póvoa Albert Corominas & João Luís de Miranda

Author:Ana Paula Barbosa Póvoa, Albert Corominas & João Luís de Miranda
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

(RO.4)

or,

(RO.5)

The model defined in the relations set (RO.2-a–RO.2-m) is being restricted, and the following can be neglected: the time period index, t, because only one time period is considered; the constraint sets concerning the definition of the probabilistic variables, ξ, which will have a constant and scenario-independent value; and, the same for the deviation definitions, dvtn, which consequently will be null and useless. The various examples (EX1 to EX6) are described in Table 1.

The effect related to the utilization of distinct numbers of discrete scenarios is analyzed in the generalized stochastic model, which conceptually reduces to the deterministic model when considering one single scenario. Although the number of binary variables is kept constant and equal to 45 for all the six examples, both the number of continuous variables and the number of constraints vary linearly with the number of scenarios, NR.(a)Variation of robust costs (105 €) versus the penalty values on non-satisfied demand, λqns, for various numerical examples.

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