Solution of fuzzy integrated production and marketing planning based on extension principle

Solution of fuzzy integrated production and marketing planning based on extension principle

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Article ID: iaor20126780
Volume: 63
Issue: 4
Start Page Number: 1201
End Page Number: 1208
Publication Date: Dec 2012
Journal: Computers & Industrial Engineering
Authors:
Keywords: marketing, programming: geometric
Abstract:

The integration of production and marketing planning is crucial in practice for increasing a firm’s profit. However, the conventional inventory models determine the selling price and demand quantity for a retailer’s maximal profit with exactly known parameters. When the demand quantity, unit cost, and production rate are represented as fuzzy numbers, the profit calculated from the model should be fuzzy as well. Unlike previous studies, this paper develops a solution method to find the fuzzy profit of the integrated production and marketing planning problem when the demand quantity, unit cost, and production rate are represented as fuzzy numbers. Based on Zadeh’s extension principle, we transform the problem into a pair of two‐level mathematical programming models to calculate the lower bound and upper bound of the fuzzy profit. According to the duality theorem of geometric programming technique, the two‐level mathematical program is transformed into the one‐level conventional geometric program to solve. At a specific a‐level, we can derive the global optimum solutions for the lower and upper bounds of the fuzzy profit by applying well‐developed theories of geometric programming. Examples are given to illustrate the whole idea proposed in this paper.

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