
[数] 典型相关
The botany traits, quality traits, yield traits of 39 inbred lines for red-seed watermelon were analyzed by canonical correlation analysis.
以39份红籽瓜自交系为试材,对其植物学性状、品质性状、产量性状间进行典型相关分析。
Such new variable is tested by pattern recognition for saturated alcohol and ether, combined with block variables' orthogonal computation and canonical correlation ana.
联合块变量正交化和典型相关分析方法,以饱和醇醚的模式识别模型对变量进行了验证。
The canonical correlation analysis was carried on 3 body weight traits and 5 body size traits in two groups from 577 Saba pigs by using SAS.
采用SAS统计分析系统对577头撒坝猪的3个体重性状和5个体尺性状进行了典型相关分析。
The canonical correlation analysis is a better method on measuring the criteria validity.
量表的标准效度的评价,最好用典型相关分析。
Canonical correlation analysis on soil enzyme activities and trace element contents in Eucalyptus plantation soil showed that among the test elements, only Zn and Mn affected enzyme activity.
运用典范相关分析研究了桉树人工林地土壤酶活性和土壤微量元素含量关系。
This paper presents the result of canonical correlation analysis between leaf characters and yield of 12 paddy rice cultivars measured during the physiological maturing stage.
对12个水稻品种生理成熟期的产量和叶型特征进行典型相关分析,结果表明:产量与叶型特征各性状的典型相关系数均达显著或极显著水平。
Methods The theory of canonical correlation was briefed and the method of canonical correlation was adopted for the example in uniform design.
方法介绍典型相关的原理,并用实例说明实现方法。
Finally, the application of canonical correlation analysis in rape(B. napus)quality breeding is illustrated by using data from 20 rape strains.
在实例中,采用20个油菜品系的观察测定资料,说明了典范相关分析在油菜品质育种中的运用。
Results The two canonical correlation index were significant by two variable lists. The occupational burnout would be greater with the rise of their professional stress.
结果两列变量发现的两对典型相关系数都达到显著水平,高职业压力将导致更高的职业倦怠水平,高社会支持水平降低倦怠水平。
These results show that the canonical correlation variable, in a more general context, will have optimal properties.
其结果说明典则相关变量在更一般意义下具有最优性质。
The canonical correlation analysis between quality characteristic and ecological factor showed the elevation height has negative correlation with quality characteristic.
对品质性状与生态因子进行典型相关分析表明,地理因子海拔高度与品质性状呈负相关。
Kernel Canonical Correlation Analysis(KCCA) is a recently addressed supervised machine learning methods, which is a powerful approach of extracting nonlinear features.
针对该问题,采用核典型相关分析方法进行原始特征的二次提取,得到简约而重要的二次特征。
This paper applies Canonical Correlation Analysis to identify the driving forces of land use structure in 1992 in Yulin Prefecture.
本文采用了典型相关分析这一经典的数理统计方法,对榆林地区土地利用结构的驱动因子进行了统计分析。
Finally, the application of canonical correlation analysis in rape(B. napus)quality breeding is illustrated by using data from 20 rape str…
在实例中,采用20个油菜品系的观察测定资料,说明了典范相关分析在油菜品质育种中的运用。
A grey canonical correlation model for analyzing the stability of arthropod community and its application in the tea plantation of Jinshan, Fuzhou, Fujian Province;
本文针对智能化住宅小区安防的使用特点,从相关规范的执行、设计理念、主要功能要求等方面进行了较全面的阐述。
Franco seedlings from 56 provenances and the climatic factors in their original regions were stu***d by using the method of canonical correlation.
种源二年生苗木调查性状与原产地气候因子两组多元变量之间的关系。
Cluster analysis and canonical analysis showed no correlation existed between the populations biochemical genetic structure and its environment.
利用聚类分析和典范分析等研究手段,结果表明各样本的生化遗传结构与环境之间不存在显著的相关性;
This paper analyzes the change of cultivated land intensive use degree from 1990 to 2006 in China and its influencing factors using canonical correlation analysis.
本文运用典型相关分析方法,对全国1990-2006年的耕地利用集约度变化态势及其影响因素进行了分析。
In addition, character of canonical correlation, and its relation with the ****** correlation and the multiple correlation are given as well as significance tests of canonical correlation.
文中对典型相关的性质及其与简单相关、复相关的关系,以及典型相关系数的显著性测验,均作了详尽的论述。
Methods A questionnaire survey was conducted among 917 college students by using coping style questionnaires and EMBU. Data were analyzed by canonical correlation analysis with SAS software.
方法采用应付方式问卷和父母教养方式评价量表(EMBU)对917名大学生进行问卷调查,利用SAS统计软件包进行典型相关分析。
The drive mechanisms of the evolution of landuse pattern are stu***d by means of canonical correlation analysis of NOSA and the trend of evolution of landuse pattern is predicted using GKSIM model.
并运用NOSA的典型相关分析进行了土地利用格局演变驱动机制研究,借助GKSIM模型对土地利用格局演变趋势进行了预测分析。
Such new variable is tested by pattern recognition for saturated alcohol and ether, combined with block variables' orthogonal computation and canonical correlation analysis.
联合块变量正交化和典型相关分析方法,以饱和醇醚的模式识别模型对变量进行了验证。
As a new type of algorithm, locality preserving canonical correlation analysis (LPCCA) can solve a large number of non-linear problems.
局部保持的典型相关分析(LPCCA)是一种能够解决大量非线性问题的新型算法。
Canonical correlation analysis and double-stepwise regression analysis were used to discuss the interrelation and interactions of soil main fertility elements and tobacco chemical components.
采用典型相关分析和逐步回归分析讨论了贵州省主产烟区土壤养分对烟叶的化学成份和品质的影响。
By canonical correlation analysis, sampling time was selected, and foliar mutriment elements closely related to forest tree growth were determined.
用典型相关分析方法选择采样时间、确定与林木生长有密切关系的叶片养分元素。
典型相关分析(Canonical Correlation Analysis, CCA)是多元统计中研究两组变量之间线性关系的方法。其核心思想是寻找两组变量的线性组合,使得组合后的新变量之间的相关系数达到最大。例如,在心理学研究中,可通过CCA分析受试者的认知能力测试分数(第一组变量)与脑成像数据(第二组变量)之间的潜在关联。
数学上,给定两组变量$X=(x_1,...,x_p)$和$Y=(y_1,...,yq)$,CCA旨在找到权重向量$a$和$b$,使得投影后的新变量$U=a^TX$与$V=b^TY$的相关系数最大化: $$ max{a,b} rho = frac{text{cov}(U,V)}{sqrt{text{var}(U)text{var}(V)}} $$ 该优化问题的解可通过广义特征值分解获得,其中涉及两组变量的协方差矩阵$Sigma{XX}$、$Sigma{YY}$以及交叉协方差矩阵$Sigma_{XY}$。
应用领域包括:
权威参考资料可参考普林斯顿大学统计系教材《多元统计分析》(Multivariate Analysis)第12章,或斯坦福大学在线课程《应用多元统计分析》模块。
: https://www.stat.princeton.edu/~ttseng/teaching.htm
: https://online.stanford.edu/courses/stats305b-applied-multivariate-analysis
典型相关分析(Canonical Correlation Analysis, CCA)是一种多元统计方法,用于研究两组变量之间的整体线性关系。以下是其核心要点:
numpy
实现均值中心化和协方差计算(参考代码片段)。典型相关分析通过构建典型变量,揭示两组多维数据的深层次关联,适用于多变量相互影响的复杂场景。如需进一步了解公式推导或具体案例,可查阅相关统计教材或文献。
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