There are a few problems that you have.
1) user-based recommendation is often slower than item-based (sometimes
MUCH slower). This can make a 2-10x difference in practice
2) pre-computing recommendations is usually much less efficient than
computing them on the fly (because typically few users
Hi,
I have been using mahout for running a user based recommendation. My data
has 1M users and 3M associations. I want to write the output of the
recommender object to a file and using a long primitive iterator takes lot
of time. I want to know is there a way to write all recommendations to a
