Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Steffen Unkel"'
Autor:
Nickolay T. Trendafilov, Steffen Unkel
Publikováno v:
Journal of Computational and Graphical Statistics. 20:874-891
A new approach for exploratory factor analysis (EFA) of data matrices with more variables p than observations n is presented. First, the classic EFA model (n > p) is considered as a specific data matrix decomposition with fixed unknown matrix paramet
A majorization algorithm for simultaneous parameter estimation in robust exploratory factor analysis
Autor:
Steffen Unkel, Nickolay T. Trendafilov
Publikováno v:
Computational Statistics & Data Analysis. 54:3348-3358
A new approach for fitting the exploratory factor analysis (EFA) model is considered. The EFA model is fitted directly to the data matrix by minimizing a weighted least squares (WLS) goodness-of-fit measure. The WLS fitting problem is solved by itera
Autor:
Steffen Unkel, Nickolay T. Trendafilov
Publikováno v:
International Statistical Review. 78:363-382
The classical exploratory factor analysis (EFA) finds estimates for the factor loadings matrix and the matrix of unique factor variances which give the best fit to the sample correlation matrix with respect to some goodness-of-fit criterion. Common f