• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2017, Vol. 53 ›› Issue (24): 211-220.doi: 10.3901/JME.2017.24.211

• 交叉与前沿 • 上一篇    

基于局部特征提取的有监督的流形学习方法

黎敏1,2, 杨孟瑶1, 陈泽1, 赵启东1   

  1. 1. 北京科技大学机械工程学院 北京 100083;
    2. 北京科技大学钢铁共性技术协同创新中心 北京 100083
  • 收稿日期:2016-12-15 修回日期:2017-06-25 发布日期:2017-12-20
  • 通讯作者: 黎敏(通信作者),女,1980年出生,博士,副教授,硕士研究生导师。主要研究方向为产品质量建模与监控、信号处理与模式识别。E-mail:limin@ustb.edu.cn
  • 基金资助:
    十二五科技支撑计划(2015BAF30B01)和省部共建耐火材料与冶金国家重点实验室开放基金(G201704)资助项目。

Supervised Manifold Learning Method Based on Local Feature Extraction

LI Min1,2, YANG Mengyao1, CHEN Ze1, ZHAO Qidong1   

  1. 1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083;
    2. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083
  • Received:2016-12-15 Revised:2017-06-25 Published:2017-12-20

摘要: 为了提高工业产品的质量,提出一种基于局部特征提取的有监督的流形学习方法,用于工业生产过程中工艺参数的调整和优化。利用“多类邻域搜索”策略对每个样本点寻找邻域矩阵,对邻域矩阵进行特征分解,获得每个样本点的演化矢量,进而可以求得潜含在数据内部的主流形。另一方面,利用训练样本建立基于支持矢量数据描述的监控模型,对工艺过程进行监控。当发现异常样本时,将异常样本在主流形方向上进行投影,可以得到各个工艺参数的调整量,由此可将异常样本调控回到生产受控状态。利用IF钢实际生产过程数据进行验证,结果表明:新方法能有效提取出数据内部的流形结构,并通过主流形实现对工艺参数的调整,为实际生产过程提供了一种新的工艺参数优化方法。

关键词: 产品质量建模, 工艺参数优化, 局部特征提取, 有监督流形学习

Abstract: A supervised manifold learning method based on local feature extraction is proposed to improve the quality of industrial product. A new neighborhood search based on multi-class is used to obtain neighborhood matrices. The eigenvalue decomposition is applied to extract the manifold hidden in the data from the neighborhood matrices. At the same time, a monitoring model is built with the training data based on support vector data description (SVDD). If an abnormal sample is detected by SVDD, it will be projected on the manifold to obtain the adjustment values, which make the abnormal sample return to the normal state. The actual production process data of IF steel is conducted to verify the effectiveness of the proposed method. The results show that the new method can extract the essential manifold and optimize the process parameters effectively. So the proposed method can provide a new strategy to optimize the process parameters for the actual production process.

Key words: local feature extraction, parameters optimization, product quality modeling, supervised manifold learning

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