@proceedings{Staab2004HOO,
  address = {Berlin; New York},
  booktitle = {International handbooks on information systems},
  editor = {Staab, Steffen and Studer, Rudi},
  interhash = {494a7427b9dd11496d824c824b35938b},
  intrahash = {f920f0aabbe7a02c9fe5d65c298bc8ea},
  issn = {3540408347  9783540408345},
  pages = {--},
  publisher = {Springer},
  refid = {53814725},
  title = {Handbook on ontologies},
  year = 2004
}

@article{crestani1997spreading,
  abstract = {This paper surveys the use of Spreading Activation techniques onSemantic Networks in Associative Information Retrieval. The majorSpreading Activation models are presented and their applications toIR is surveyed. A number of works in this area are criticallyanalyzed in order to study the relevance of Spreading Activation forassociative IR.
ER  -},
  author = {Crestani, F.},
  interhash = {3dfe398bb588335ffc562088d5a509de},
  intrahash = {c26c16e0a8036000b788fada656f59dd},
  journal = {Artificial Intelligence Review},
  month = {December},
  number = 6,
  pages = {453--482},
  title = {Application of Spreading Activation Techniques in Information Retrieval},
  url = {http://dx.doi.org/10.1023/A:1006569829653},
  volume = 11,
  year = 1997
}

@misc{voss-2007,
  abstract = {This paper gives an overview of current trends in manual indexing on the Web. Along with a general rise of user generated content there are more and more tagging systems that allow users to annotate digital resources with tags (keywords) and share their annotations with other users. Tagging is frequently seen in contrast to traditional knowledge organization systems or as something completely new. This paper shows that tagging should better be seen as a popular form of manual indexing on the Web. Difference between controlled and free indexing blurs with sufficient feedback mechanisms. A revised typology of tagging systems is presented that includes different user roles and knowledge organization systems with hierarchical relationships and vocabulary control. A detailed bibliography of current research in collaborative tagging is included.},
  author = {Voss, Jakob},
  interhash = {c293cd6ef590c6aaf32df75cbdb9de82},
  intrahash = {9ec98351dc630ea6b1f65046ba44a8dd},
  title = {Tagging, Folksonomy \& Co - Renaissance of Manual Indexing?},
  url = {http://www.citebase.org/abstract?id=oai:arXiv.org:cs/0701072},
  year = 2007
}