1. Cluto clustering toolkit. http://glaros.dtc.umn.edu/gkhome/cluto/cluto/overview. Cluto clustering toolkit. http://glaros.dtc.umn.edu/gkhome/cluto/cluto/overview.
2. Flixster dataset. http://http://www.cs.sfu.ca/~sja25/personal/datasets/. Flixster dataset. http://http://www.cs.sfu.ca/~sja25/personal/datasets/.
3. Toward the next generation of recommender systems: a survey of the state-of-the-art and possible extensions
4. F. Aiolli. A preliminary study on a recommender system for the million songs dataset challenge. PREFERENCE LEARNING: PROBLEMS AND APPLICATIONS IN AI page~1 2012. F. Aiolli. A preliminary study on a recommender system for the million songs dataset challenge. PREFERENCE LEARNING: PROBLEMS AND APPLICATIONS IN AI page~1 2012.