Authors: Setsuya Kurahashi
Addresses: Graduate School of Business Sciences, University of Tsukuba, 3-29-1 Otsuka, Bunkyo, Tokyo 112-0012, Japan
Abstract: 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 behaviours. Based on the background, this paper proposes a novel method to develop a process response model from continuous time-series data. The method consists of the following phases: (1) reciprocal correlation analysis, (2) process response model, (3) extraction of control rules, (4) extraction of a workflow and (5) detecting outliers. The main contribution of the research is to establish a method to mine a set of meaningful control rules from Learning Classifier System (LCS) using the Minimum Description Length (MDL) criteria and Tabu search method. The proposed method has been applied to an actual process of a biochemical plant and has shown the validity and the effectiveness.
Keywords: LCSs; learning classifier systems; MDL; minimum description length; process control; data mining; tabu search; technology extraction; expert skills; time series data; expert knowledge; operator skills; operator knowledge; control rules; biochemical plants; chemical plants; continuation processes.
International Journal of Computer Applications in Technology, 2008 Vol.33 No.2/3, pp.157 - 163
Published online: 10 Dec 2008 *Full-text access for editors Access for subscribers Purchase this article Comment on this article