/usr/lib/R/site-library/fastICA/INDEX is in r-cran-fastica 1.2-1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | fastICA FastICA algorithm
ica.R.def R code for FastICA using a deflation scheme
ica.R.par R code for FastICA using a parallel scheme
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