@InProceedings{DBLP:conf/kdd/BellKV07,
   title = {Modeling relationships at multiple scales to improve accuracy of large recommender systems},
   author = {Robert Bell and Yehuda Koren and Chris Volinsky},
   year = 2007,
   BookTitle = {KDD},
   att_url = {http://www2.research.att.com/areas/visualization/papers_videos/pdf/DBLP-conf-kdd-BellKV07.pdf},
   att_abstract_url = {abstracts/DBLP-conf-kdd-BellKV07.txt}
}