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A Study on Dual Response Approach Combining Neural Network and Genetic Algorithm

인공신경망과 유전알고리즘 기반의 쌍대반응표면분석에 관한 연구

  • Arungpadang, Tritiya R. (Department of Systems Management and Engineering, Pukyong National University) ;
  • Kim, Young Jin (Department of Systems Management and Engineering, Pukyong National University)
  • ;
  • 김영진 (부경대학교 시스템경영공학과)
  • Received : 2013.06.14
  • Accepted : 2013.09.02
  • Published : 2013.10.15

Abstract

Prediction of process parameters is very important in parameter design. If predictions are fairly accurate, the quality improvement process will be useful to save time and reduce cost. The concept of dual response approach based on response surface methodology has widely been investigated. Dual response approach may take advantages of optimization modeling for finding optimum setting of input factor by separately modeling mean and variance responses. This study proposes an alternative dual response approach based on machine learning techniques instead of statistical analysis tools. A hybrid neural network-genetic algorithm has been proposed for the purpose of parameter design. A neural network is first constructed to model the relationship between responses and input factors. Mean and variance responses correspond to output nodes while input factors are used for input nodes. Using empirical process data, process parameters can be predicted without performing real experimentations. A genetic algorithm is then applied to find the optimum settings of input factors, where the neural network is used to evaluate the mean and variance response. A drug formulation example from pharmaceutical industry has been studied to demonstrate the procedures and applicability of the proposed approach.

Keywords

References

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