I saw some impressive result from LSTM models producing Shakespeare like texts. I was wondering if an LSTM package exists for R. I googled for it but only found packages for Python and Julia. (maybe there are some performance issue which explains why these programs are more preferred over R) Do You know about an LSTM (or at least an RNN) package for R? If exists are there any tutorials for using them?
Have a look at the rnn package (full disclosure, I am the author). It implements a multilayer RNN, GRU, and LSTM directly in R, i.e. not an underlying C++ library, so you should also be able to read the code and understand what is going on.
The CRAN version is quite up to date, but the GitHub version is bleeding edge and can be installed using:
if (!require('devtools')) install.packages('devtools') devtools::install_github('bquast/rnn')
I found this page, but the R package seems not to be open source : link.