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.
原子轨道的线性叠加,成分子轨道。
Linear combination of atomic orbitals into molecular orbitals.
模型指出,当期的股价是当期的盈利成分和期初股价的线性函数。
The model shows that current stock value is the linear function of current earning component and lag stock value.
提取出的成分具有线性无关的特点,对地下水动态变化有较好的解释能力,利于建模和预测。
The abstracted components, having the property of linearly independence, can explain the groundwater dynamic characteristics better and are more favorable for modeling and forecasting.
提取出的成分具有线性无关的特点,对日负荷有较好的解释能力,且利于建模和预测。
The abstracted components, having the property of linearly independence, can be used to explain the daily load better and are more favorable for modeling and forecasting.
一个光谱数据集可以表示成几个主要光谱成分的线性组合。
A dataset of color spectra can be represented as a linear combination of few principal spectra.
传统的基于线性变换的主成分分析法(PCA)是一种有效的地震属性降维优化方法。
Traditional principal analysis method (PCA) based on linear transform is effective method of seismic attribute dimension-reducing optimization.
由于工具误差分离存在着很强的复共线性,传统的最小二乘方法与主成分方法不能很好的解决这一问题。
Because the separation for GISE is an almost singular regression problem, the classic least square method and principal component method are not satisfactorily for solving the problem.
观测研究表明,长江对承压水动态的影响程度随距离的增加而减弱,二者成分段线性反比的关系。
Observation and research show that the affecting degree of Yangtze River on confined water dynamics decreases with distance from the river, the effect being inversely linear proportional to distance.
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.
根据三个平面理论,话题是个语用成分,指述说的对象。它在语句线性序列中的位置分布及其形式都与它所承载的信息内容密切相关。
According to the Three-dimension Theory, a topic is a pragmatic element, and it refers to a person or thing that is being talked about.
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.
结果:样品中两种成分完全分离且线性关系良好,对乙酰氨基酚和咖啡因的加样回收率分别为99.3%和100.2%。
Result:Two components were completely separated and determined. The average recoveries were 99.3% for paracetamol and 100.2% for caffeine, respectively.
著名的线性变换的方法包括,例如,主成分分析,因子分析,投影寻踪。
Well-known linear transformation methods include, for example, principal component analysis, factor analysis, and projection pursuit.
该算法通过对正则化线性斜率的自适应,更新动态优化代价函数,以降低对PET图像高频成分的抑制。
This algorithm can adaptively optimize the cost function and reduce the suppression of high frequency component of PET image by adaptively updating linear slope of the RP.
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.
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.
结果该植入剂图谱中,各配方成分的特征峰呈线性叠加,不多一峰,不少一峰。
Results From the spectrogram of the implants, the characteristic band of each ingredient appears as linear superposition, neither more nor less.
话语具有线性特征,说话者必须选择合适的成分作为话语的起点,即选择恰当的主位作为话语信息的出发点。
As we all know, language is linear, so the speaker must start his speech with proper constituent, that is to say, he must select proper Theme as the beginning of his sentence message.
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.
对大同烟煤脱灰前后的灰组成分析表明,高精煤中的灰分含量与其所含的硅、铁组分的质量之和呈线性关系。
Ash component analysis before and after deashing of Datong coal indicated that a linear relationship exists between ash content in deashed coal and total contents of Si and Fe in the ash.
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.
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.
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.
有时,同一个线性排列的句法成分对应多个层次结构,因而产生句法歧义。
The syntactic function shows the relationship between an element and other elements in a sentence.
有时,同一个线性排列的句法成分对应多个层次结构,因而产生句法歧义。
The syntactic function shows the relationship between an element and other elements in a sentence.
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