学習分類子システムを用いたプロセス時系列のアクティブマイニング

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  • 倉橋 節也
    筑波大学大学院ビジネス科学研究科企業科学専攻
  • 寺野 隆雄
    筑波大学大学院ビジネス科学研究科企業科学専攻

書誌事項

タイトル別名
  • Active Mining from Process Time Series by Learning Classifier System
  • ガクシュウ ブンルイシ システム オ モチイタ プロセス ジケイレツ ノ アクティブマイニング

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Continuation processes in chemical and/or biotechnical plants always generate a large amount of time series data. However, since conventional process models are described as a set of control models, it is difficult to explain the complicated and active plant behaviors. Based on the background, this research proposes a novel method to develop a process response model from continuous time-series data.<P> The method consists of the following phases: 1) Collect continuous process data at each tag point in a target plant; 2) Normalize the data in the interval between zero and one; 3) Get the delay time, which maximizes the correlation between given two time series data; 4) Select tags with the higher correlation; 5) Develop a process response model to describe the relations among the process data using the delay time and the correlation values; 6) Develop a process prediction model via several tag points data using a neural network; 1) Discover control rules from the process prediction model using Learning Classifier system.<P> The main contribution of the research is to establish a method to mine a set of meaningful control rules from Learning Classifier System using the Minimal Description Length criteria. The proposed method has been applied to an actual process of a biochemical plant and has shown the validity and the effectiveness.

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