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The new neural network prediction model of water level is established based on the principal component analysis (PCA). 采用人工神经网络与主分量分析相结合的方法，建立了梧州水位的预报模型。
In time domain, feature parameters of the step response are compressed using principal component analysis (PCA). 从时域角度,利用主元分析压缩电路阶跃响应的特征参数,从而简化了神经网络结构并提高了网络训练速度,提高了诊断效率。
A novel method of car license plate extraction based on Probabilistic Principal Component Analysis (PPCA) is presented. 摘要提出了一种新颖的采用概率主成分分析的车牌提取方法。
The mathematic principle of principal component analysis method (PCA) lies in coordinate conversion. 主分量分析法（PCA）的数学原理是坐标转换，它将原变量变换成互不相关的变量。
This paper presents an algorithm about SAR image change detection based on Principal Component Analysis(PCA). 该文提出一种基于主分量分析(PCA)的SAR图像变化检测算法。
The dimension of MTS database was reduced firstly by Principal Component Analysis (PCA). 采用主成分分析方法对MTS数据进行降维处理；
Subject the matrix to principal components analysis. 主成分分析法。
EOF, EOF procedures, principal component analysis procedure, suitable for vector field orthogonal decomposition. 经验正交函数，EOF程序，主成分分析程序，适合做向量场的正交分解。
Using principal component analysis in chemometrics, a distribution feature of the nutritive elements was discussed. 运用化学计量学中的主组分分析方法，讨论了这些营养元素分布特征。
By using principal component analysis, turfs insect communities can be divided into three types. 经主成分分析，草坪昆虫群落可以分为三个类型。
Multi-scale principal component analysis (MSPCA) for sensor fault diagnosis is discussed. 摘要讨论了多尺度主元分析方法在传感器故障诊断中的应用问题。
Principal Component Analysis (PCA), Cluster Analysis (CA) and Probabilistic Neural Network (PNN) were used in the data analysis and pattern recognition. 并通过主元分析、聚类分析和概率神经网络对数据进行了分析和识别。
Keywords: design hyetograph, principal components analysis, cluster analysis. 关键词：设计雨型、主成分分析、群集分析。
Principal component analysis was carried out to study the slaughtering performance of cross combinations using Anas platyrhynchos as male parent. 摘要利用主成分分析对以绿头野鸭为父本的不同杂交组合的屠宰性能进行了研究。
Principal Component Analysis(PCA) was introduced in this paper for incipient fault diagnosis of a waste solid incinerator(WSI). 研究结果表明,PCA能有效地进行固体垃圾焚烧炉早期故障检测及诊断。
The karst area in Guizhou Province was classified into five eco-economic categories by the principal component analysis and fuzzy poly-class method. 摘要运用主成分分析法和聚类分析法，对贵州喀斯特地区的生态经济类型进行了划分。
In this paper,the author studied the reasons affecting land desertification and tries to extract the determinant ones by principal component analysis. 采用多元分析法(主分量分析法)对内蒙古东部地区土地沙化各因子之间关系进行综合探讨,找出主导因子。
Jackson J E,Mudholkar G S.Control procedures for residuals associated with principal component analysis[J].Technometrics,1979,21(3):341-349. 王海清余世明.;基于故障诊断性能优化的主元个数选取方法[J]
A method to monitor and fault-diagnose the streptomycin fermentation based on multi-way Principal Component Analysis (MPCA) is given. 利用多向PCA方法进行链霉素发酵过程的故障诊断，该方法能有效诊断出发生故障的时刻，并找出故障原因。
The pharmacodynamic material basis has been analysed by applying of the similarity arithmetic and the principal component analysis. 在上述实验的基础上，本文全面探索和建立了道地药材指纹图谱研究内容、研究原则及研究方法。