主成分分析使用属性之间的相关性实现按列压缩。
The principal component analysis implements the column-wise compression, using the correlation between attributes.
研究方法：主成分分析法、灰关联分析。
Methods of principal component analysis, grey incidence analysis were employed.
研究方法：主成分分析法。
主成分分析法是一种有效的数据压缩方法。
The principal component analysis is a kind of effective data compression method.
对这两个主成分分别进行QTL定位分析。
QTL mapping was conducted with the two principal components, respectively.
河南省；粮食生产动态变化；主成分分析。
Henan Province; grain production; dynamic variety; Principal Component Analysis.
目的同时测定复方甲氧那明中四个主成分含量。
OBJECTIVE To determine four components in compound methoxyphenamine capsules simultaneously.
上市公司；业绩评价；战略；主成分分析；熵值法。
Listed companies; performance evaluation; strategic; principal component analysis; entropy method.
方法应用主成分分析法和模糊综合评判法分析数据。
Methods Data is analyzed by principal components analysis and ambiguity synthetic judgment.
根据主成分分析的定义，它本质上具有分类的能力。
Based on the definition of PCA, it essentially owns classification ability.
主成分分析(PCA)是自动人脸识别的常用方法。
Principal Component Analysis (PCA) is a common method in face recognition.
然而实验发现第一主成分未必是算法初始化的最佳选择。
They are all initialized by the first principal component for the close relation between principal curves and the principal components.
数据的主成分提取是为了降低数据集的维数，减少计算量。
Extracting the primary components of data is to decrease the dimension of the data in order to decrease the quantity of calculation.
介绍了主成分分析法的原理和它在天体物理中的广泛应用。
The main principle and applications to astrophysics of PCA are reviewed in this paper.
以主成分分析法提取了支配上述8个化学成分的4个主成分。
By primary component analysis, 4 primary components were distilled to govern above-mentioned 8 chemicals.
对其中的几个主要因素进行主成分分析，剔除权重最小的因素；
Then analysis several main factors use of principal component analysis algorithm, rejecting the factor with minimum weight.
亲地壳元素中的主成分元素在有沙尘天气时，其富集因子也偏高。
The enrichment factor of mainly absorbent element is also high under dust and sand weather conditions.
对19个加工类型黄瓜品种的7个品质性状进行了主成分和聚类分析。
Principal component analysis and cluster analysis on 7 quality characters of 19 pickling cucumber varieties were conducted.
本文利用主成分分析和对数中心化的方法对江河水质进行综合定量评价。
The integrated quantitative evaluation on river water quality was made by principle components analysis and logarithm center method.
提出了空调系统传感器故障检测、故障识别、故障重构的主成分分析方法。
The principal component analysis (PCA) approach for sensor fault detection, identification and reconstruction in HVAC system is presented.
首先建立指标体系，并运用主成分分析法对22个类型划分指标进行筛选。
Firstly, classification index system was set up, then was selected in 22 original variables by the principal component analysis.
此外，还通过主成分分析的方法分析了不同组成对旋转氧弹值的影响强弱。
Furthermore, we also studied the relative strength of different composition to oxidation stability by principal component analysis.
实验结果表明，该降维方法比较有效，并且较主成分分析具有明显的优势。
The experiment results prove that this method is efficient, and it outperforms the principal component analysis.
与主成分分析等方法相比，对应分析与最优尺度分析方法具有其独特的优势。
Compared with factor analysis, correspondence analysis and optimal scaling technique have unique advantages.
在其他的8个波段中，6,7波段的信息较为丰富，6波段对主成分的贡献大。
Among other 8 bands, bands 6 and 7 contain more information, and band 6 makes great contribution to the principal component.
方法：介绍相关主成分回归cPCR法并将该法与传统的主成分回归进行比较。
Methods: to introduce the correlation principal components regression (CPCR) and compare the difference between the CPCR and top-down PCR.
结果当归超微细粉水提取液中主成分含量高于浓缩颗粒，而与饮片水提取液相当。
Results The contents of main components in single decoction solution of ultra micro-powder were higher than those in concentrate-granules, and the same as those in slice form.
结果当归超微细粉水提取液中主成分含量高于浓缩颗粒，而与饮片水提取液相当。
Results The contents of main components in single decoction solution of ultra micro-powder were higher than those in concentrate-granules, and the same as those in slice form.
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