There are (as far as I know) open algorithms for that purpose by GroupLens Research at the University of Minnesota. They are operating the site https://movielens.org that predicts personal ratings (based on already rated ones) with a solid precision.
There are (as far as I know) open algorithms for that purpose by GroupLens Research at the University of Minnesota. They are operating the site https://movielens.org that predicts personal ratings (based on already rated ones) with a solid precision.