@inproceedings{marinho:ecml2009,
  abstract = {This paper describes our approach to the ECML/PKDD Discovery Challenge 2009. Our approach is a pure statistical model taking no content information into account. It tries to find latent interactions between users, items and tags by factorizing the observed tagging data. The factorization model is learned by the Bayesian Personal Ranking method (BPR) which is inspired by a Bayesian analysis of personalized ranking with missing data. To prevent overfitting, we ensemble the models over several iterations and hyperparameters. Finally, we enhance the top-n lists by estimating how many tags to recommend.},
  address = {Bled, Slovenia},
  author = {Rendle, Steffen and Schmidt-Thieme, Lars},
  booktitle = {ECML PKDD Discovery Challenge 2009 (DC09)},
  editor = {Eisterlehner, Folke and Hotho, Andreas and Jäschke, Robert},
  interhash = {8485850cde1a6b61971cac27fa867845},
  intrahash = {ceed045a84e121fa37384f797306d30f},
  issn = {1613-0073},
  month = {September},
  pages = {235--242},
  publisher = {CEUR Workshop Proceedings},
  title = {Factor Models for Tag Recommendation in BibSonomy},
  url = {http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-497/},
  volume = 497,
  year = 2009
}

@inproceedings{hotho2006bibsonomy,
  abstract = {Social bookmark tools are rapidly emerging on the Web. In such systems users are setting up lightweight conceptual structures called folksonomies. The reason for their immediate success is the fact that no specific skills are needed for participating. In this paper we specify a formal model for folksonomies and briefly describe  our own system BibSonomy, which allows for sharing both bookmarks and publication references in a kind of personal library.},
  address = {Aalborg},
  author = {Hotho, Andreas and Jäschke, Robert and Schmitz, Christoph and Stumme, Gerd},
  booktitle = {Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures},
  editor = {de Moor, Aldo and Polovina, Simon and Delugach, Harry},
  interhash = {d28c9f535d0f24eadb9d342168836199},
  intrahash = {5854a71547051543dd3d3d5e2e2f2b67},
  isbn = {87-7307-769-0},
  pages = {87-102},
  publisher = {Aalborg Universitetsforlag},
  title = {{BibSonomy}: A Social Bookmark and Publication Sharing System},
  url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006bibsonomy.pdf},
  year = 2006
}