Simple recommendatnion system implementation with Python

Current method:

• Matrix Factorization (with numpy & theano)
• Bayesian MF (with numpy)

Reference:

• "Probabilistic Matrix Factorization", R. Salakhutdinov and A.Mnih., Neural Information Processing Systems 21 (NIPS 2008). Jan. 2008.
• "Bayesian Probabilistic Matrix Factorization using MCMC", R. Salakhutdinov and A.Mnih., 25th International Conference on Machine Learning (ICML-2008)
• Matlab code: http://www.cs.toronto.edu/~rsalakhu/BPMF.html
• Theano (http://deeplearning.net/software/theano/)