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A PCA-FBPN Approach for Job Cycle Time Estimation in a Wafer Fabrication Factory

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  • Toly Chen

    (Feng Chia University, Taiwan)

Abstract

Variable replacement is a well-known technique to improve the forecasting performance, but has not been applied to the job cycle time forecasting, which is a critical task to a semiconductor manufacturer. To this end, in this study, principal component analysis (PCA) is applied to enhance the forecasting performance of the fuzzy back propagation network (FBPN) approach. First, to replace the original variables, PCA is applied to form variables that are independent of each other, and become new inputs to the FBPN. Subsequently, a FBPN is constructed to estimate the cycle times of jobs. According to the results of a case study, the hybrid PCA-FBPN approach was more efficient, while achieving a satisfactory estimation performance.

Suggested Citation

  • Toly Chen, 2012. "A PCA-FBPN Approach for Job Cycle Time Estimation in a Wafer Fabrication Factory," International Journal of Fuzzy System Applications (IJFSA), IGI Global, vol. 2(2), pages 50-67, April.
    • Handle: RePEc:igg:jfsa00:v:2:y:2012:i:2:p:50-67
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