search for: nsprcomp

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2013 Dec 17
1
Polychoric Principal Component Analysis (pPCA)
...I could not find one that directly estimate pPCA and graph the individuals and variables maps. I will appreciate any help that expand these reproducible scripts. #How to conduct polychoric principal component analysis pPCA using #either of these packages library(psych) library(FactoMineR) library(nsprcomp) #Bock and Liberman (1970) data set of 1000 observations of the LSAT #from psych data(bock) responses <- table2df(bock.table[,2:6],count=bock.table[,7], ??????????????? labs= paste ("lsat6.",1:5,sep="")) fix(responses) describe(responses) #Estimate the polychoric correlati...
2017 Sep 28
0
Efficient Package for Huge datasets in R
Dear Sir/Madam, I have a large data set of 10,17,289 observations of 10,830 variables. I need to use PCA to reduce the dimension of dataset. I have already tried irlba, prcomp and nsprcomp packages in R but couldn't do for huge data sets. i.e pc <- prcomp_irlba(sparseYY[1:5000,], n=50, retx = TRUE, center = TRUE, scale. = FALSE) able to get only few PCs for 5000 rows only so can you please help me what package can i use to do PCA in R for large dataset? Thanks and Regards...