| Summary: | In a manufacturing industry, establishment of the mass customization which is the management system that produces a product efficiently with diversification of a customer's request is pressing need. When the demand quantity is known, the new production plan system which performs mass customization had already been presented. In this paper, when the demand quantity is unknown, we proposed the model of mass customization about production and inventory planning. A new model is formulated as a linear programming problem based on a MIN-MAX strategy. This model can be used when demand quantity is not given. In this paper, we use the particle swarm optimization which is one of the methods of optimization problem in order to solve this model.
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