Multi-criteria model for determining order size

This paper presents a multi-criteria model for determining the order size for materials used in production. It is assumed in this model that the consumption rate of each material is a random variable with a known probability distribution. Using such a model, in which the purchase cost of materials ordered, is limited, three criteria are considered: order size, probability of a lack of materials in the production process, and deviations in the order size from the consumption rate in past periods. Based on an example, it is shown how to use the model to determine the order sizes for polyurethane adhesive and wood in a hard-coal mine.