a University of Notre Dame.
b Vanderbilt University.
Multivariate Behav Res. 2017 Nov-Dec;52(6):720-731. doi: 10.1080/00273171.2017.1361312. Epub 2017 Sep 27.
In exploratory factor analysis, factor rotation is conducted to improve model interpretability. A promising and increasingly popular factor rotation method is geomin rotation. Geomin rotation, however, frequently encounters multiple local solutions. We report a simulation study that explores the frequency of local solutions in geomin rotation and the implications of such phenomena. The findings include: (1) multiple local solutions exist for geomin rotation in a variety of situations; (2) ϵ = .01 provides satisfactory rotated factor loadings in most situations; (3) 100 random starts appear sufficient to examine the multiple solution phenomenon; and (4) a population global solution may correspond to a sample local solution rather than the sample global solution.
在探索性因素分析中，进行因子旋转是为了提高模型的可解释性。一种有前途且越来越流行的因子旋转方法是 geomin 旋转。然而，geomin 旋转经常会遇到多个局部解。我们报告了一项模拟研究，探讨了 geomin 旋转中局部解的频率以及这种现象的意义。研究结果包括：（1）在各种情况下，geomin 旋转存在多个局部解；（2）在大多数情况下，ϵ=.01 可以提供令人满意的旋转因子载荷；（3）100 次随机启动足以检查多个解现象；（4）群体全局解可能对应于样本局部解，而不是样本全局解。
