@article{Bang Hai Le2016, title={An Extension for Bounded-SVD — A Matrix Factorization Method with Bound Constraints for Recommender Systems}, author={Bang Hai Le and Kazuki Mori and Ruck Thawonmas}, journal={Journal of Information Processing}, volume={24}, number={2}, pages={314-319}, year={2016}, doi={10.2197/ipsjjip.24.314} }