@inproceedings{krause2008,
	title = {A Comparison of Social Bookmarking with Traditional Search},
	author = {B. Krause and A. Hotho and G. Stumme},
	booktitle = {Advances in Information Retrieval, 30th European Conference on IR Research, ECIR 2008},
	pages = {101-113},
	publisher = {Springer},
	url = {http://www.kde.cs.uni-kassel.de/hotho/pub/2008/ecir2008krause.pdf},
	volume = {4956},
	year = {2008},
	biburl = {http://www.bibsonomy.org/bibtex/2581f40c32a996d6d155ba8758d4c277e/mstrohm},
	abstract = {Social bookmarking systems allow users to store links to internet resources on a web page. As social bookmarking systems are growing in popularity, search algorithms have been developed that transfer the idea of link-based rankings in the Web to a social bookmarking system’s
data structure. These rankings differ from traditional search engine rankings in that they incorporate the rating of users. 

In this study, we compare search in social bookmarking systems with traditionalWeb search. In the first part, we compare the user activity and behaviour in both kinds of systems, as well as the overlap of the underlying sets of URLs. In the second part,we compare graph-based and vector space rankings for social bookmarking systems with commercial search engine rankings.

Our experiments are performed on data of the social bookmarking system Del.icio.us and on rankings and log data from Google, MSN, and AOL. We will show that part of the difference between the systems is due to different behaviour (e. g., the concatenation of multi-word lexems
to single terms in Del.icio.us), and that real-world events may trigger similar behaviour in both kinds of systems. We will also show that a graph-based ranking approach on folksonomies yields results that are closer to the rankings of the commercial search engines than vector space
retrieval, and that the correlation is high in particular for the domains that are well covered by the social bookmarking system.},
	keywords = {folksonomy search social-factors social-search }
}

@inproceedings{hotho2006bibsonomy,
	title = {{BibSonomy}: A Social Bookmark and Publication Sharing System},
	address = {Aalborg},
	author = {Andreas Hotho and Robert Jäschke and Christoph Schmitz and Gerd Stumme},
	booktitle = {Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures},
	editor = {Aldo de Moor and Simon Polovina and Harry Delugach},
	pages = {87-102},
	publisher = {Aalborg Universitetsforlag},
	url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006bibsonomy.pdf},
	year = {2006},
	biburl = {http://www.bibsonomy.org/bibtex/25854a71547051543dd3d3d5e2e2f2b67/herb123},
	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.},
	isbn = {87-7307-769-0},
	keywords = {Bookmark System bibsonomy bookmark publication sharing social system }
}

@inproceedings{jaeschke07organizing,
	title = {Organizing Publications and Bookmarks in BibSonomy},
	address = {Banff, Canada},
	author = {Robert Jäschke and Miranda Grahl and Andreas Hotho and Beate Krause and Christoph Schmitz and Gerd Stumme},
	booktitle = {Workshop on Social and Collaborative Construction of Structured Knowledge (CKC 2007) at WWW 2007},
	editor = {Harith Alani and Natasha Noy and Gerd Stumme and Peter Mika and York Sure and Denny Vrandecic},
	url = {http://www2007.org/workshops/paper_25.pdf},
	year = {2007},
	biburl = {http://www.bibsonomy.org/bibtex/2b3a5e9851647ca0a7dfb62f041872504/ishmael1851},
	description = {BibSonomy::bibtex::Organizing Publications and Bookmarks in BibSonomy},
	keywords = {2007 BibSonomyZukunftReferat bookmarking folksonomy social system }
}

@inproceedings{hotho_2006,
	title = {BibSonomy: A Social Bookmark and Publication Sharing System},
	address = {Aalborg},
	author = {Andreas Hotho and Robert Jäschke and Christoph Schmitz and Gerd Stumme},
	booktitle = {Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures},
	editor = {Aldo de Moor and Simon Polovina and Harry Delugach},
	pages = {87-102},
	publisher = {Aalborg Universitetsforlag},
	url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006bibsonomy.pdf},
	year = {2006},
	biburl = {http://www.bibsonomy.org/bibtex/25854a71547051543dd3d3d5e2e2f2b67/ishmael1851},
	abstract = {Social bookmark tools are rapidly emerging on the Web. In suchsystems users are setting up lightweight conceptual structurescalled folksonomies. The reason for their immediate success is thefact that no specific skills are needed for participating. In thispaper we specify a formal model for folksonomies and briefly describe our own system BibSonomy, which allows for sharing both bookmarksand publication references in a kind of personal library.},
	isbn = {87-7307-769-0},
	keywords = {BibSonomy conference_proceedings }
}

@inproceedings{hotho_2006,
	title = {BibSonomy: A Social Bookmark and Publication Sharing System},
	address = {Aalborg},
	author = {Andreas Hotho and Robert Jäschke and Christoph Schmitz and Gerd Stumme},
	booktitle = {Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures},
	editor = {Aldo de Moor and Simon Polovina and Harry Delugach},
	pages = {87-102},
	publisher = {Aalborg Universitetsforlag},
	url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006bibsonomy.pdf},
	year = {2006},
	biburl = {http://www.bibsonomy.org/bibtex/25854a71547051543dd3d3d5e2e2f2b67/paul},
	abstract = {Social bookmark tools are rapidly emerging on the Web. In suchsystems users are setting up lightweight conceptual structurescalled folksonomies. The reason for their immediate success is thefact that no specific skills are needed for participating. In thispaper we specify a formal model for folksonomies and briefly describe our own system BibSonomy, which allows for sharing both bookmarksand publication references in a kind of personal library.},
	isbn = {87-7307-769-0},
	keywords = {bibsonomy bookmarking folksonomy social software }
}

@proceedings{DBLP:conf/iccs/2005,
	title = {Conceptual Structures: Common Semantics for Sharing Knowledge, 13th
	International Conference on Conceptual Structures, ICCS 2005, Kassel,
	Germany, July 17-22, 2005, Proceedings},
	booktitle = {ICCS},
	editor = {Frithjof Dau and Marie-Laure Mugnier and Gerd Stumme},
	publisher = {Springer},
	series = {Lecture Notes in Computer Science},
	volume = {3596},
	year = {2005},
	biburl = {http://www.bibsonomy.org/bibtex/2049a73d0f39efc7d4d988f262911c6f4/pdeleenh},
	timestamp = {2008.05.14}, bibsource = {DBLP, http://dblp.uni-trier.de}, isbn = {3-540-27783-8}, owner = {pdeleenh},
	keywords = {imported }
}

@inproceedings{Ganter-Stumme:03,
	title = {Creation and Merging of Ontology Top-Levels},
	author = {Bernhard Ganter and Gerd Stumme},
	booktitle = {Proc. of the 11th International Conference on Conceptual Structures,
	ICCS 2003 Dresden, Germany, July 21-25, 2003},
	pages = {131--145},
	year = {2003},
	biburl = {http://www.bibsonomy.org/bibtex/261c66431a7ece9ab775df812adf86336/pdeleenh},
	keywords = {imported }
}

@article{JaeschkeHothoEtAl08jws,
	title = {Discovering Shared Conceptualizations in Folksonomies},
	author = {Robert Jäschke and Andreas Hotho and Christoph Schmitz and Bernhard Ganter and Gerd Stumme},
	journal = {Web Semantics},
	number = {1},
	pages = {38-53},
	url = {http://dx.doi.org/10.1016/j.websem.2007.11.004},
	volume = {6},
	year = {2008},
	biburl = {http://www.bibsonomy.org/bibtex/202a122a03ba283e0b1678f4d13a8647a/flint63},
	abstract = {Social bookmarking tools are rapidly emerging on the Web. In such
	systems users are setting up lightweight conceptual structures called
	folksonomies. Unlike ontologies, shared conceptualizations are not
	formalized, but rather implicit. We present a new data mining task,
	the mining of all frequent tri-concepts, together with an efficient
	algorithm, for discovering these implicit shared conceptualizations.
	Our approach extends the data mining task of discovering all closed
	itemsets to three-dimensional data structures to allow for mining
	folksonomies. We provide a formal definition of the problem, and
	present an efficient algorithm for its solution. Finally, we show
	the applicability of our approach on three large real-world examples.},
	issn = {1570-8268}, timestamp = {2008.05.03}, file = {ScienceDirect:2008/JaeschkeHothoEtAl08jws.pdf:PDF}, owner = {flint},
	keywords = {ai bookmark community ontology paper semantic software tagging v0805 web }
}

@inproceedings{ZachariasB07,
	title = {SOBOLEO -- Social Bookmarking and Lighweight Engineering of Ontologies.},
	author = {Valentin Zacharias and Simone Braun},
	booktitle = {CKC},
	editor = {Natalya Fridman Noy and Harith Alani and Gerd Stumme and Peter Mika and York Sure and Denny Vrandecic},
	publisher = {CEUR-WS.org},
	series = {CEUR Workshop Proceedings},
	url = {http://dblp.uni-trier.de/db/conf/www/ckc2007.html#ZachariasB07},
	volume = {273},
	year = {2007},
	biburl = {http://www.bibsonomy.org/bibtex/2e720277d7747c22af0e37101eb1f0752/deynard},
	ee = {http://ceur-ws.org/Vol-273/paper_41.pdf}, date = {2008-05-30},
	keywords = {folksology }
}

@inproceedings{becker02toscana,
	title = {Toscana{J}: An Open Source Tool for Qualitative Data Analysis},
	address = {Lyon, France},
	author = {P. Becker and J. Hereth and G. Stumme},
	booktitle = {Advances in Formal Concept Analysis for Knowledge Discovery in Databases.},
	editor = {V. Duquenne and B. Ganter and M. Liquiere and E. M. Nguifo and G. Stumme},
	month = {July 23,},
	pages = {1-2},
	url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2002/FCAKDD02.pdf},
	year = {2002},
	biburl = {http://www.bibsonomy.org/bibtex/29c8080aa372c4ac558c11465d817499a/cschenk},
	comment = {alpha},
	keywords = {analysis concepts data discovery fca kdd knowledge paper qualitative read:2008 sourceforge stumme tool toscanaj }
}