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Credibility-Based Biobjective Fuzzy Optimization for Supplier Selection Problem with Disruption

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  • Xuejie Bai

Abstract

This paper addresses a supplier selection problem in which a buyer procures multiple products from multiple suppliers under disruption risk. The problem is formulated as a new credibility-based biobjective fuzzy optimization model. In the proposed model, cost, capacity, and demand are characterized by fuzzy variables with known possibility distributions. The objectives of our model are to maximize the total quality of purchased products and minimize the expected total cost. Two credibility constraints are used to guarantee that the chance about the supplier capacity and buyer demand can satisfy the predetermined levels. The main concern in solving the optimization model is to calculate the expected value of the objective function and the credibility in the constraints. When the key parameters are mutually independent triangular fuzzy variables, the expected cost objective and credibility constraints can be transformed into their equivalent forms. Taking advantage of the structural characteristics of the equivalent model, the goal programming method is employed to solve the supplier selection model, which can be solved by conventional optimization method. At last, some numerical experiments have been performed to illustrate the effectiveness of the proposed model and solution strategy.

Suggested Citation

  • Xuejie Bai, 2015. "Credibility-Based Biobjective Fuzzy Optimization for Supplier Selection Problem with Disruption," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-11, October.
  • Handle: RePEc:hin:jnlmpe:256428
    DOI: 10.1155/2015/256428
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