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October 29, 2015 15:51
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A Random Projection function using "mlr" package in R.
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| # Written by Adam Acosta | |
| randomProjection <- function(A, k) { | |
| if (!is.matrix(A)) { | |
| tmp <- as.matrix(A) | |
| } else { | |
| tmp <- A | |
| } | |
| p <- ncol(tmp) | |
| set.seed(as.numeric(format(Sys.time(), '%S'))) | |
| R <- matrix(data = rnorm(k), nrow = k, ncol = p) | |
| tmp <- apply(tmp, 2, function(x) (x - mean(x)) / sd(x)) | |
| as.data.frame(t(R %*% t(tmp))) | |
| } |
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A Package is Available for performing Random Projection in R language
https://cran.r-project.org/web/packages/RandPro/index.html