@Inproceedings{illig2009comparison,
  author = {Illig, Jens and Hotho, Andreas and Jäschke, Robert and Stumme, Gerd},
  title  = {A Comparison of Content-Based Tag Recommendations in Folksonomy Systems},

  year   = {2011},
  number = {},
  url    = {http://dx.doi.org/10.1007/978-3-642-22140-8_9},
  doi = {10.1007/978-3-642-22140-8_9},
  const  = {\ text}
}
@Book{jaeschke2011formal,
  author = {Jäschke, Robert},
  title  = {Formal Concept Analysis and Tag Recommendations in Collaborative Tagging Systems},

  year   = {2011},
  number = {},
  url    = {http://www.aka-verlag.com/de/detail?ean=978-3-89838-332-5},

  const  = {\ text}
}
@Article{zhang2011tagaware,
  author = {Zhang, Zi-Ke and Zhou, Tao and Zhang, Yi-Cheng},
  title  = {Tag-Aware Recommender Systems: A State-of-the-Art Survey},
  journal = {Journal of Computer Science and Technology},
  year   = {2011},
  number = {5},
  url    = {http://dx.doi.org/10.1007/s11390-011-0176-1},
  doi = {10.1007/s11390-011-0176-1},
  const  = {\ text}
}
@Inproceedings{musto2010combining,
  author = {Musto, Cataldo and Narducci, Fedelucio and Lops, Pasquale and de Gemmis, Marco},
  title  = {Combining Collaborative and Content-Based Techniques for Tag Recommendation.},

  year   = {2010},
  number = {},
  url    = {http://dx.doi.org/10.1007/978-3-642-15208-5_2},
  doi = {10.1007/978-3-642-15208-5_2},
  const  = {\ text}
}
@Inproceedings{rae2010improving,
  author = {Rae, Adam and Sigurbjörnsson, Börkur and van Zwol, Roelof},
  title  = {Improving tag recommendation using social networks},

  year   = {2010},
  number = {},
  url    = {http://portal.acm.org/citation.cfm?id=1937055.1937077},

  const  = {\ text}
}
@Inproceedings{rendle2010pairwise,
  author = {Rendle, Steffen and Schmidt-Thieme, Lars},
  title  = {Pairwise interaction tensor factorization for personalized tag recommendation},

  year   = {2010},
  number = {},
  url    = {http://doi.acm.org/10.1145/1718487.1718498},
  doi = {10.1145/1718487.1718498},
  const  = {\ text}
}
@Inproceedings{bollen2009suggestions,
  author = {Bollen, Dirk and Halpin, Harry},
  title  = {The Role of Tag Suggestions in Folksonomies},

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

  const  = {\ text}
}
@Inproceedings{cao2009social,
  author = {Cao, Hao and Xie, Maoqiang and Xue, Lian and Liu, Chunhua and Teng, Fei and Huang, Yalou},
  title  = {Social Tag Prediction Base on Supervised Ranking Model},

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

  const  = {\ text}
}
@Inproceedings{lipzcak2009tag,
  author = {Lipczak, Marek and Hu, Yeming and Kollet, Yael and Milios, Evangelos},
  title  = {Tag Sources for Recommendation in Collaborative Tagging Systems},

  year   = {2009},
  number = {},
  url    = {http://ceur-ws.org/Vol-497/paper_19.pdf},

  const  = {\ text}
}
@Inproceedings{rendle2009learning,
  author = {Rendle, Steffen and Balby Marinho, Leandro and Nanopoulos, Alexandros and Schmidt-Thieme, Lars},
  title  = {Learning optimal ranking with tensor factorization for tag recommendation},

  year   = {2009},
  number = {},
  url    = {http://portal.acm.org/citation.cfm?doid=1557019.1557100},
  doi = {10.1145/1557019.1557100},
  const  = {\ text}
}
@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}
}
@Inproceedings{cattuto2008semantic,
  author = {Cattuto, Ciro and Benz, Dominik and Hotho, Andreas and Stumme, Gerd},
  title  = {Semantic Analysis of Tag Similarity Measures in Collaborative Tagging Systems},

  year   = {2008},
  number = {},
  url    = {http://olp.dfki.de/olp3/},

  const  = {\ text}
}
@Article{jaeschke2008tag,
  author = {Jäschke, Robert and Marinho, Leandro and Hotho, Andreas and Schmidt-Thieme, Lars and Stumme, Gerd},
  title  = {Tag Recommendations in Social Bookmarking Systems},
  journal = {AI Communications},
  year   = {2008},
  number = {4},
  url    = {http://www.kde.cs.uni-kassel.de/pub/pdf/jaeschke2008tag.pdf},
  doi = {10.3233/AIC-2008-0438},
  const  = {\ text}
}
@Inproceedings{suchanek2008social,
  author = {Suchanek, Fabian M. and Vojnovic, Milan and Gunawardena, Dinan},
  title  = {Social tags: meaning and suggestions},

  year   = {2008},
  number = {},
  url    = {http://portal.acm.org/citation.cfm?id=1458114},
  doi = {http://doi.acm.org/10.1145/1458082.1458114},
  const  = {\ text}
}
@Inproceedings{adrian2007contag,
  author = {Adrian, Benjamin and Sauermann, Leo and Roth-Berghofer, Thomas},
  title  = {ConTag: A semantic tag recommendation system},

  year   = {2007},
  number = {},
  url    = {http://www.dfki.uni-kl.de/~sauermann/papers/horak+2007a.pdf},

  const  = {\ text}
}
@Article{kaser2007tagcloud,
  author = {Kaser, Owen and Lemire, Daniel},
  title  = {Tag-Cloud Drawing: Algorithms for Cloud Visualization},
  journal = {CoRR},
  year   = {2007},
  number = {},
  url    = {http://arxiv.org/abs/cs/0703109},

  const  = {\ text}
}
@Misc{illig2006entwurf,
  author = {Illig, Jens},
  title  = {Entwurf und Integration eines Item-Based Collaborative Filtering 
Tag Recommender Systems in das BibSonomy-Projekt},

  year   = {2006},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/lehre/arbeiten/documents/illig2006entwurf.pdf},

  const  = {\ text}
}
@Inproceedings{veres2006language,
  author = {Veres, Csaba},
  title  = {The Language of Folksonomies: What Tags Reveal About User Classification},

  year   = {2006},
  number = {},
  url    = {http://dx.doi.org/10.1007/11765448_6},
  doi = {10.1007/11765448},
  const  = {\ text}
}
@Inproceedings{xu2006tsw,
  author = {Xu, Z. and Fu, Y. and Mao, J. and Su, D.},
  title  = {Towards the semantic web: Collaborative tag suggestions},

  year   = {2006},
  number = {},
  url    = {http://www.ibiblio.org/www_tagging/2006/13.pdf},

  const  = {\ text}
}
@Inproceedings{sarwar2001item,
  author = {Sarwar, Badrul and Karypis, George and Konstan, Joseph and Riedl, John},
  title  = {Item-based collaborative filtering recommendation algorithms},

  year   = {2001},
  number = {},
  url    = {http://portal.acm.org/citation.cfm?id=372071},
  doi = {10.1145/371920.372071},
  const  = {\ text}
}