The scores of the first principal component may approximately represent the extent of the outbreaks of pest.
利用第一主分量得分的多少可以近似反映蝗虫的发生程度。
The first principal component of the Southern Oscillation Index (SOI) is used as the intensity of annual SO.
用南方涛动指数(SOI)的第一主成分表示年涛动强度。
They are all initialized by the first principal component for the close relation between principal curves and the principal components.
然而实验发现第一主成分未必是算法初始化的最佳选择。
The results show temperature spatial variations have high consistency, the variance ratio contribution of the first principal component is about 75%.
结果表明：祁连山附近气温在空间上具有很好的一致性，年平均气温的第一主成分的方差贡献可占总方差的75%左右。
The first principal component can denote the degree of soil salinity, and the second and third principal component can denote the degree of soil alkalinity.
第一主成分综合反映了区内土壤盐渍化程度，第二和第三主成分联合反映了土壤的碱性特征。
The accumulative variance contribution of the first three principal components was 35.7%. The first principal component encompassed only 20.22% of the total variation.
主分量分析得到的前三个主分量的累计方差贡献率为35.7%，第一主分量的方差贡献率为20.22%。
Comparing with the traditional methods, it could hold more information of the original index matrix and had much higher contributing rate of the first principal component.
与传统方法相比，本文方法更为合理地保留了原始指标矩阵中的信息，且第一主成分的贡献率有了显著的提高。
We mainly carry out more lateral comparison for the 40 blue chips selected, and they have a rank according to the scores of the first principal component to offer reference to masses of investor.
它主要对所选择的40只绩优股，进行横向的比较，并根据第一主成分得分进行排序，给广大的投资者提供参考。
The results showed that in the first principal component, the contribution of arthropod community, phytophagous sub-community and predacious sub-community was 66.70%, 73.39% and 54.17%, respectively.
结果表明，葡萄园节肢动物群落、植食类亚群落、捕食类亚群落特征向量矩阵中第1主分量综合指标贡献率依次为66·70%、73·39%和54·17%。
Time phase for the first complex principal component and time amplitude for the second one may use forecast of days of yearly snow lying.
第一复主分量的时间位相和第二复主分量的时间振幅峰值年可用于年积雪日数的预测。
First-generation computers were characterized by the use of vacuum tubes as their principal electronic component.
第一代计算机的特色是使用真空管为其主要电子器件。
This is the first time to use the Robust principal component analysis method in studying the early Jurassic floristic division of Eurasia continent.
应用稳健主成分分析研究欧亚大陆早侏罗世植物区系划分尚属首次试验。
Using the method of principal component Analysis based on the sample data of 65 individuals with normal pulmonary function, we obtained the first and second principal components.
根据65例正常肺功能的样本数据，应用主成份分析方法，我们算得第一、第二主成份。
Then utilizing principal component analysis, the author analyzed the data of each period and concluded that the first and second principal component's accumulative proportion is more than 85 percent.
根据第一主成分和第二主成分的特征向量计算各时间段的第一主成分和第二主成分的指标值。
Then utilizing principal component analysis, the author analyzed the data of each period and concluded that the first and second principal component's accumulative proportion is more than 85 percent.
根据第一主成分和第二主成分的特征向量计算各时间段的第一主成分和第二主成分的指标值。
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