Implicit matrix factorization as outlined in http://www2.research.att.com/~yifanhu/PUB/cf.pdf.
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README.md
mf.py
mf_threads.py

README.md

implicitMF

Python implementation of implicit matrix factorization as outlined in http://labs.yahoo.com/files/HuKorenVolinsky-ICDM08.pdf.

Requires numpy version 1.7.1 or greater and scipy version 0.12.0 or greater.

This fork adds a multithreaded version: mf_threads.py that speeds things up a little bit.

Note: because of Python's GIL, we actually use processes, not threads.