@Inproceedings{xi2009content,
  author = {Si, Xiance and Liu, Zhiyuan and Li, Peng and Jiang, Qixia and Sun, Maosong},
  title  = {Content-based and Graph-based Tag Suggestion},

  year   = {2009},
  number = {},
  url    = {},

  const  = {\ text}
}