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Mathematical Problems in Engineering
Volume 2013, Article ID 791415, 10 pages
Research Article

Assignment Problem for Team Performance Promotion under Fuzzy Environment

Department of Industrial Engineering and Management, TaHwa University of Science and Technology, No. 1 TaHwa Road, Cyong-Lin, HsinChu County 307, Taiwan

Received 27 November 2012; Revised 23 May 2013; Accepted 27 May 2013

Academic Editor: Asier Ibeas

Copyright © 2013 Chi-Jen Lin. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper constructs a general fuzzy assignment problem (GFAP) based on a real-world scenario and proposes a solution procedure. Suppose a project team consists of workers and a manager. The workers are responsible for performing jobs and the manager for restraining the total cost. The corresponding cost for a worker to perform his assigned job is not defined deterministically but as a subnormal fuzzy interval with increasing linear membership function. Job quality is then linearly and positively related to the cost of the job and is taken as the performance of the worker. On the other hand, the performance of the manager is negatively related to the total cost and is defined as a fuzzy interval with a decreasing linear membership function. It is common practice for a company to regard the lowest performance among members as the team performance in order to increase overall team performance. Hence, using the max–min criterion, a mixed nonlinear programming model of the GFAP is constructed. The model can be transformed into a general 0-1 fractional programming problem with max–min objective function. An algorithm that combines simplex and trade-off approaches is proposed to solve the problem. A numerical example and the computational results show that the constructed model and the proposed algorithm are useful and efficient.