bdeonovic

" copy all this into a vim buffer, save it, then...
" source the file by typing :so %
" Now the vim buffer acts like a specialized application for mastering vim

" There are two queues, Study and Known.  Depending how confident you feel
" about the item you are currently learning, you can move it down several
" positions, all the way to the end of the Study queue, or to the Known
" queue.

" type ,, (that's comma comma)

bdeonovic

using Optim
using DelimitedFiles  
using ForwardDiff

#data
X = readdlm("lsat.txt");
n, m = size(X)
r = vec(mapslices(sum, X, dims=2))
s = vec(mapslices(sum, X, dims=1))
f = [sum(r.==j) for j in 1:m]