替代数据检验法是检验时间序列中是否存在确定性非线性成分的重要统计方法。
In the analysis of time series, the surrogate data test is often performed in order to investigate nonlinearity in the data.
目前，替代数据方法已逐渐成为时间序列的非线性成分检验中广为采用的一种方法。
Currently, the surrogate data method has become a widely used method in testing nonlinearity of time series.
从整体上看，每个时段的结果均有所不同，这其中除了误差因素外，可能还包含着运动的非线性成分。
On the whole, the results differ from different time intervals. Except for the error, the results may include the nonlinear factor of the movement.
线性主成分分析是一种线性分析方法，而数据通常是非线性的。
Principal component analysis is a linear method, but the most data are nonlinear.
基于核主成分分析（KPCA）的人脸识别算法能够提取非线性图像特征，在小样本训练条件下有较好性能。
The algorithm of face recognition based on kernel principal component analysis(KPCA)can abstract nonlinear features of image and can get better performance under less sample training conditions.
运用非线性主成分分析法对欧亚地区1948—2007年冬季海平面气压距平场进行分析。
Eurasian winter sea level pressure anomalies during 1948-2007 were investigated by applying a nonlinear principal component analysis (NLPCA) method.
在许多普通形式的分析中，非线性负载担当电流源，产生电流的谐波成分。
In many common forms of analysis, the nonlinear load, acting as a current source, supplies the harmonic components of the current.
本论文根据制备梯度功能材料成分分布的非线性理论，计算出聚氨酯在混合树脂中体积比的分布函数。
According to the non-linear theory of composition of the graded function materials distribution, the volume content function of polyurethane in the mixed resin was achieved.
非线性负载会形成非正弦电流，如方波，其中包含谐波成分。
The nonlinear load will draw a nonsinusoidal current, such as a square wave, which contains harmonic components.
论文中重点介绍了该种方法的降维思想，以及用主成分分析方法、对应分析方法和非线性映射方法解决问题的步骤。
In this paper, the emphasis is placed on the technique for reducing the dimensions. The principal analysis, correspondence analysis and nonlinear mapping are described in detail.
针对减速箱运行状态和特征参数之间存在的复杂非线性关系，提出了基于主成分分析的RBF神经网络减速箱运行状态诊断方法。
As to the complicated nonlinear relation existing between running status of gear reducer and characteristic parameters, PCA-based RBF neural network reducer running status diagnostics is put forward.
在此基础上，本文引入了分析有序数据的非线性主成分方法。
On this basis, this paper introduce an analysis of ordinal data on nonlinear principal component method.
KPCA采用非线性方法提取主成分，描述待识别图像中多个像素之间的相关性。
KPCA extracted principal component with nonlinear method and described the relationship among three or more pixels of the identified images.
运用非线性主成分分析法对欧亚地区1948—2007年冬季海平面气压距平场进行分析。
Eurasian summer sea level pressure anomalies during 1948 -2007 were investigated by applying a Nonlinear Principal Component Analysis (NLPCA) method.
超连续谱产生现象是指超短脉冲在介质中传输时由于介质的非线性效应导致脉冲的谱被极大地加宽，透视谱中产生了很多新的频率成分。
Supercontinuum is such an optical phenomena that when ultrashort pulses propagating in nonlinear media, its optical spectrum becomes very broad, much wider than that of the original spectrum.
文章考虑网络流量非线性的特点，通过不同的数学模型将流量时间序列分解成趋势成分、周期成分、突变成分和随机成分。
According to the character of non linear network traffic, the traffic time series is decomposed into trend component, period component, mutation component and random component.
建立的信息安全风险评估体系采用BP神经网络方法，是一种非线性方法，不带有明显的主观成分和人为因素，使评价结果更有效、更客观。
BP neural network, the method is nonlinear method, is applied to risk assessment model of information security. The subjectivity and man-made is overcome. It's an effective method.
仿真实验结果表明，主曲线成分分析能很好地解决非线性主成分问题，应用前景广阔。
Experimental results show that principal curve component analysis is excellent for solving nonlinear principal component problem, and it has great applications potentials.
主成分分析方法主要利用数据的线性相关性来降维，并不适合非线性相关的情况。
As principal component analysis mainly use the linear correlation of the data, we propose a nonlinear principal component analysis method, by combining the mercer kernel function with it.
通过预测负载网侧输入电流的基波成分，控制有源滤波器产生用以抵消非线性负载的谐波电流。
On the based of artificial neural network, the active power filter can work properly to cancel load's line harmonic current. Only few readily available parameters are used in the method.
通过预测负载网侧输入电流的基波成分，控制有源滤波器产生用以抵消非线性负载的谐波电流。
On the based of artificial neural network, the active power filter can work properly to cancel load's line harmonic current. Only few readily available parameters are used in the method.
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