航空学报 > 2003, Vol. 24 Issue (3): 207-211

基于智能复合结构的可靠性分布模式自动识别

朱家元, 张恒喜, 张喜斌   

  1. 西安空军工程大学工程学院飞机与发动机工程系 陕西西安 710038
  • 收稿日期:2002-05-15 修回日期:2002-12-28 出版日期:2003-06-25 发布日期:2003-06-25

Reliability Distributions Automatic Identification Based on Intelligent Combined Structure Model

ZHU Jia-yuan, ZHANG Heng-xi, ZHANG Xi-bin   

  1. Department of Aircraft and Engine Engineering; Air Force Engineering University; Xi'an 710038; China
  • Received:2002-05-15 Revised:2002-12-28 Online:2003-06-25 Published:2003-06-25

摘要: 采用Vor onoi 向量对SOM 网络算法进行了改进, 提高了学习收敛速度。通过提取数据的统计特征,建立了可靠性分布模式自动识别样本。提出的智能自动识别模型分两层, 在SOM 网络层对概率分布模式进行自动聚类, 在支持向量机层对各聚类组进行分类学习和识别, 获得识别模型的双层记忆权值。最后采用模型对常用可靠性分布模式进行了自动识别研究。测试结果表明, 建立的可靠性分布模式自动识别模型是可行、有效的。

关键词: 神经网络, 支持向量机, 机器学习, 可靠性, 概率分布, 模式识别

Abstract: An intelligent ident ification combined structure model is proposed using self-or ganizing map (SOM) andsupport vector machines ( SVM) . This model can improve the self-organizing map algorithm using Voronoi vector toreduce space occupation and improve convergence, and develop pr obability intelligent identification training samplesset. Due to the complexity of the summary statistics, the aut hors select kurtosis, skewness, quantile and cumulativeprobability as parameters for data distributions identification training sets in experience. The combined structuremodel is divided into two layers. In the first SOM layer, different reliability distr ibutions tr aining sets are clusteredinto groups using SOM. In the second SVM layer, the clusters are learned and classified respect ively in each groupusing novel multi2class support vector machines. Random data time ser ies of 23 types of probability distr ibutions aretesting identified in the trained model. The results indicate that the identification rates are higher by the intelligentmodel compared to BP neural networks and probability networks models.

Key words: neural networks, support vector machines, machine learning, reliability, probability distribution, pattern recognition

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