Research Article Comparing covariance matrices: random skewers method compared to the common principal components modelcovariance matrixcommon principal componentsrandom skewersNew World monkeysquantitative geneticsComparisons of covariance patterns are becoming more common as interest in the evolution of ...
With an experimental study,the application of covariance without interaction and with interaction in experiment with pre-measurement and post-measurement was discussed.And comparing with the "analysis of covariance for difference value" designed by the authors,the two analysis methods had the similar res...
BMC Medical Research Methodology . 2014Egbewale BE, Lewis M, Sim J. Bias, precision and statistical power of analysis of covariance in the analysis of ... BE Egbewale,M Lewis,J Sim - 《Bmc Medical Research Methodology》 被引量: 87发表: 2014年 A review of multivariate longitudinal data an...
This contribution is focused on how to write a research paper when structural equation models are being used in empirical work. The main question to be answered is what information should be reported and what results can be deleted without much loss of judgment about the quality of research and...
Mean-Covariance Structure Models in Economic Research: an Application to a Lending Program for Development in Burkina Faso 来自 EconPapers 喜欢 0 阅读量: 28 作者:J Paxton,C Thraen 摘要: As applied development economic models become more sophisticated, they include increasingly complex conceptual ...
the evolution strategies with covariance matrix adaptation and rank 渭 update (CMA-ES), used as an external solver in combination with groundwater transport... P Bayer,M Finkel - 《Water Resources Research》 被引量: 59发表: 2007年 Human-competitive lens system design with evolution strategies (...
In this paper, we show that the state estimates from the KF in a standard linear dynamical system setting are exactly equivalent... DC Farrow,M Jahja,R Rosenfeld,... 被引量: 0发表: 2019年 Development of efficient data assimilation methods for solute transport problems The solution of marine...
The problem of building a covariance matrix by fixing their diagonal values (variances) and all or a subset of its eigenvalues has been solved in different ways in the literature. In this paper we propose an iterative heuristic method to build such covariance matrix when a subset of its covar...
比如时间序列里（比如高频或者超频时间序列在金融里应用蛮广的），COR的pattern可以反映序列的模型。而在financial econometrics里面基本分析都是针对VAR-COV MATRIC进行的。因为CORR算是比较直观的一种线性相关性的度量，但是CORR也因此容易失去一些COV本来的特性，比如时间序列里平稳性就不能用CORR来决定。。
Decompositions that have received recent research attention include variance components, spectral decomposition, Cholesky decomposition, and matrix logarithm. In this paper we study a statistically motivated decomposition which appears to be relatively unexplored for the purpose of modeling. We model a ...