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Computational Intelligence and Neuroscience
Volume 2012, Article ID 404806, 12 pages
Research Article

Enhancing Scheduling Performance for a Wafer Fabrication Factory: The Biobjective Slack-Diversifying Nonlinear Fluctuation-Smoothing Rule

Department of Industrial Engineering and Systems Management, Feng Chia University, Taichung 40724, Taiwan

Received 15 March 2012; Revised 13 June 2012; Accepted 21 June 2012

Academic Editor: W. J. Chris Zhang

Copyright © 2012 Toly Chen and Yu Cheng Wang. 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.


A biobjective slack-diversifying nonlinear fluctuation-smoothing rule (biSDNFS) is proposed in the present work to improve the scheduling performance of a wafer fabrication factory. This rule was derived from a one-factor bi-objective nonlinear fluctuation-smoothing rule (1f-biNFS) by dynamically maximizing the standard deviation of the slack, which has been shown to benefit scheduling performance by several previous studies. The efficacy of the biSDNFS was validated with a simulated case; evidence was found to support its effectiveness. We also suggested several directions in which it can be exploited in the future.