Fuzzy Support Vector Regression Model of 4-CBA Concentration for Industrial PTA Oxidation Process 被引量：3

工业PTA氧化工程中4-CBA浓度的模糊支持向量回归模型

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摘要 In the past few years, support vector machines (SVMs) have been applied to many fields, such as pattern recognition and data mining, etc. However there still exist some problems to be solved. One of them is that the SVM is very sensitive to outliers or noises because of over-fitting problem. In this paper, a fuzzy support vector regression (FSVR) method is presented to deal with this problem. Strategies based on k nearest neighbor (kNN) and support vector data description (SVDD) are adopted to set the fuzzy membership values of data points in FSVR.The proposed FSVR soft sensor models based on kNN and SVDD are employed to predict the concentration of 4-carboxy-benzaldehyde (4-CBA) in purified terephthalic acid (PTA) oxidation process. Simulation results indicate that the proposed method indeed reduces the effect of outliers and yields higher accuracy. In the past few years, support vector machines （SVMs） have been applied to many fields, such as pattern recognition and data mining, etc. However there still exist some problems to be solved. One of them is that the SVM is very sensitive to outliers or noises because of over-fitting problem. In this paper, a fuzzy support vector regression （FSVR） method is presented to deal with this problem. Strategies based on k nearest neighbor （kNN） and support vector data description （SVDD） are adopted to set the fuzzy membership values of data points in FSVR. The proposed FSVR soft sensor models based on kNN and SVDD are employed to predict the concentration of 4-carboxy-benzaldehyde （4-CBA） in purified terephthalic acid （PTA） oxidation process. Simulation results indicate that the proposed method indeed reduces the effect of outliers and yields higher accuracy.

作者张英苏宏业刘瑞兰褚健

机构地区 Zhejiang University

出处《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2005年第5期642-648,共7页 中国化学工程学报（英文版）

基金 National Key Technologies Research and Development Program in the 10th five-year plan，国家杰出青年科学基金

关键词 purified terephthalic acid 4-carboxy-benzaldehyde support vector machines soft sensor fuzzy membership 精对苯二甲酸氧化工程 4-羧基苯甲醛 4-CBA 浓度模糊支持向量回归模型

分类号 TQ245.12 [化学工程—有机化工]

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