Interactive Collaborative Filtering

• core/ICF.py : pretraining with Gibbs sampling.
• core/PICF.py : pretraining with gradient descent. Just a experiment. It seems failed.

Reference:

Xiaoxue Zhao, Weinan Zhang, and Jun Wang. 2013. Interactive collaborative filtering. In Proceedings of the 22nd ACM international conference on Conference on information & knowledge management (CIKM '13). ACM, New York, NY, USA, 1411-1420. DOI=http://dx.doi.org/10.1145/2505515.2505690