Prediction of silicon content in hot metal using support vector regression based on chaos particle swarm optimization

Authors:
Xianlun Tang;Ling Zhuang;Changjiang Jiang
Affiliations:
Key Laboratory of Network Control & Intelligent Instrument (Chongqing University of Posts and Telecommunications), Ministry of Education, Chongqing, PR China;Key Laboratory of Network Control & Intelligent Instrument (Chongqing University of Posts and Telecommunications), Ministry of Education, Chongqing, PR China;Key Laboratory of Network Control & Intelligent Instrument (Chongqing University of Posts and Telecommunications), Ministry of Education, Chongqing, PR China
Venue:
Expert Systems with Applications: An International Journal
Year:
2009

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Abstract

The prediction of silicon content in hot metal has been a major study subject as one of the most important means for the monitoring state in ferrous metallurgy industry. A prediction model of silicon content is established based on the support vector regression (SVR) whose optimal parameters are selected by chaos particle swarm optimization. The data of the model are collected from No. 3 BF in Panzhihua Iron and Steel Group Co. of China. The results show that the proposed prediction model has better prediction results than neural network trained by chaos particle swarm optimization and least squares support vector regression, the percentage of samples whose absolute prediction errors are less than 0.03 when predicting silicon content by the proposed model is higher than 90%, it indicates that the prediction precision can meet the requirement of practical production.