Kuldeep Kumar's contribution to the Discussion of ‘Vintage Factor Analysis with Varimax Performs Statistical Inference’ by Rohe & Zeng
Kuldeep Kumar 对《传统 Varimax 因子分析实现统计推断》的讨论AI 解读 ↓
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Kuldeep Kumar 对《传统 Varimax 因子分析实现统计推断》的讨论AI 解读 ↓
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Data Analysts are quite often confused between principal component analysis (PCA) and factor analysis. Both are the same data reduction techniques that are immensely helpful in big data analysis in many other areas. I personally think factor analysis is just an offshoot of PCA and as the authors have mentioned PCA with Varimax is a vintage data analysis technique. So, should the title of the paper be Vintage PCA with Varimax performing statistical inference? I am quite impressed with the systematic study of 144,136 papers done by the authors on ‘How and where factor analysis is used’. No wonder it is one of the most widely used statistical techniques in many areas of social sciences, business, medicine, etc. I will just like to add that the ‘vintage’ book written by Professor Ian Jolliffe on PCA in 1986 and published by Springer has received more than 48,000 citations which is one of the highest citations of any statistical books. Professor Jolliffe has also written a series of well-cited seminal papers on PCA Jolliffe (2022), and his recent paper on his ‘vintage’ 50 years personal journey through time with PCA is worth reading in this context.