@article{CSIS_2018_15_2_a5,
     author = {Won-Seok Hwang and Shaoyu Li and Sang-Wook Kim and Kichun Lee},
     title = {Data {Imputation} {Using} a {Trust} {Network} for {Recommendation} via {Matrix} {Factorization}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2018},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2018_15_2_a5/}
}