benfred

benfred

# A Simple Julia Version of the algorithm described in the paper Collaborative Filtering for Implicit Feedback Datasets 
# http://yifanhu.net/PUB/cf.pdf

# This was mainly an experiment for me in learning Julia, unfortunately the code below ended up
# being about the same speed as my pure python version here https://github.com/benfred/implicit
# and much much slower than the Cython version I included there.

# (fwiw The slowness is probably because I don't understand the language as well as I do Python)

function alternatingLeastSquares(input, factors, regularization)