@inproceedings{anti2008krause, title = {The Anti-Social Tagger - Detecting Spam in Social Bookmarking Systems}, author = {Beate Krause and Christoph Schmitz and Andreas Hotho and Gerd Stumme}, booktitle = {Proc. of the Fourth International Workshop on Adversarial Information Retrieval on the Web}, year = 2008, url = {http://airweb.cse.lehigh.edu/2008/submissions/krause_2008_anti_social_tagger.pdf}, biburl = {http://www.bibsonomy.org/bibtex/26357f535000a383f228f1e8e56ca86ca/schmitz}, keywords = {2008 mining bookmarking social myown folksonomy spam} } @article{jaeschke2008discovering, title = {Discovering Shared Conceptualizations in Folksonomies}, author = {Robert Jäschke and Andreas Hotho and Christoph Schmitz and Bernhard Ganter and Gerd Stumme}, booktitle = {Semantic Web and Web 2.0}, journal = {Web Semantics: Science, Services and Agents on the World Wide Web}, month = {feb}, note = { }, number = 1, pages = {38--53}, volume = 6, year = 2008, url = {http://www.sciencedirect.com/science/article/B758F-4R53WD4-1/2/ae56bd6e7132074272ca2035be13781b}, description = {ScienceDirect - Web Semantics: Science, Services and Agents on the World Wide Web : Discovering shared conceptualizations in folksonomies}, 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.}, biburl = {http://www.bibsonomy.org/bibtex/263901930c137df0c2dad84075c564b14/schmitz}, keywords = {2008 myown folksonomy} } @phdthesis{schmitz2007self, title = {Self-Organized Collaborative Knowledge Management}, author = {Christoph Schmitz}, month = {September}, pages = 217, publisher = {Kassel University Press}, school = {Universität Kassel}, year = 2007, url = {http://www.uni-kassel.de/hrz/db4/extern/dbupress/publik/abstract.php?978-3-89958-325-0}, isbn = {978-3-89958-325-0}, biburl = {http://www.bibsonomy.org/bibtex/2c4b8b978143d4e9b7c677b5945f2973d/schmitz}, keywords = {sna 2007 selforganization peer2peer dissertation myown folksonomy peertopeer analysis knowledgemanagement p2p network} } @inproceedings{schmitz2007network, title = {Network Properties of Folksonomies}, address = {Banff}, author = {Christoph Schmitz and Miranda Grahl and Andreas Hotho and Gerd Stumme and Ciro Catutto and Andrea Baldassarri and Vittorio Loreto and Vito D. P. Servedio}, booktitle = {Proc. WWW2007 Workshop ``Tagging and Metadata for Social Information Organization''}, month = {May}, year = 2007, day = 8, biburl = {http://www.bibsonomy.org/bibtex/223a0a0cd67ab0014e0346527e986caeb/schmitz}, keywords = {sna workshop 2007 myown folksonomy network} } @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}, year = 2007, url = {http://www2007.org/workshops/paper_25.pdf}, biburl = {http://www.bibsonomy.org/bibtex/2b3a5e9851647ca0a7dfb62f041872504/schmitz}, keywords = {2007 bibsonomy myown folksonomy} } @article{cattuto2007network, title = {Network Properties of Folksonomies}, author = {Ciro Catutto and Christoph Schmitz and Andrea Baldassarri and Vito D. P. Servedio and Vittorio Loreto and and Andreas Hotho and Miranda Grahl and Gerd Stumme}, editor = {Susanne Hoche and Andreas Nürnberger and Jürgen Flach}, journal = {AI Communications Journal, Special Issue on "Network Analysis in Natural Sciences and Engineering"}, publisher = {IOS Press}, year = 2007, biburl = {http://www.bibsonomy.org/bibtex/22835c71a94a365b22477f4d42d263671/schmitz}, keywords = {2007 dynamics collective myown folksonomy} } @inproceedings{jaeschke2007analysis, title = {Analysis of the Publication Sharing Behaviour in {BibSonomy}}, address = {Sheffield, England}, author = {Robert Jäschke and Andreas Hotho and Christoph Schmitz and Gerd Stumme}, booktitle = {Proceedings of the 15th International Conference on Conceptual Structures}, month = {July}, year = 2007, abstract = {BibSonomy is a web-based social resource sharing system which allows users to organise and share bookmarks and publications in a collaborative manner. In this paper we present the system, followed by a description of the insights in the structure of its bibliographic data that we gained by applying techniques we developed in the area of Formal Concept Analysis.}, biburl = {http://www.bibsonomy.org/bibtex/22cbbe0790e81d5af7927ba51098fa126/schmitz}, keywords = {2007 bibsonomy myown folksonomy} } @inproceedings{schmitz2006mining, title = {Mining Association Rules in Folksonomies}, address = {Ljubljana}, author = {Christoph Schmitz and Andreas Hotho and Robert Jäschke and Gerd Stumme}, booktitle = {Proc. IFCS 2006 Conference}, month = {July}, year = 2006, vgwort = {18}, biburl = {http://www.bibsonomy.org/bibtex/2f3254d8f1ded630a4225ab824804e837/schmitz}, keywords = {2006 semantic myown folksonomy analysis network} } @inproceedings{hotho2006information, title = {Information Retrieval in Folksonomies: Search and Ranking}, address = {Budva, Montenegro}, author = {Andreas Hotho and Robert Jäschke and Christoph Schmitz and Gerd Stumme}, booktitle = {Proceedings of the 3rd European Semantic Web Conference}, month = {June}, year = 2006, vgwort = {29}, biburl = {http://www.bibsonomy.org/bibtex/2dfebdb57814865682df90dc99cd449d1/schmitz}, keywords = {2006 pagerank alphabetic myown folksonomy folkrank informationretrieval ranking} } @inproceedings{hjss06bibsonomy, title = {{BibSonomy}: A Social Bookmark and Publication Sharing System}, author = {Andreas Hotho and Robert Jäschke and Christoph Schmitz and Gerd Stumme}, booktitle = {Proceedings of the Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures}, note = {to appear}, year = 2006, vgwort = {27}, biburl = {http://www.bibsonomy.org/bibtex/2a6faae355d867b5f998ed30e79eec3cf/schmitz}, keywords = {2006 bookmarking social bibsonomy myown folksonomy iccs} } @inproceedings{hjss06bibsonomy, title = {{BibSonomy}: A Social Bookmark and Publication Sharing System}, address = {Aalborg, Denmark}, author = {Andreas Hotho and Robert Jäschke and Christoph Schmitz and Gerd Stumme}, booktitle = {Proceedings of the Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures}, editor = {Aldo de Moor and Simon Polovina and Harry Delugach}, month = {July}, publisher = {Aalborg University Press}, year = 2006, vgwort = {27}, biburl = {http://www.bibsonomy.org/bibtex/22cbd8e3236adea7c54779605a5aa4fd6/schmitz}, keywords = {2006 bookmarking social bibsonomy myown folksonomy iccs} } @inproceedings{hotho2006trend, title = {Trend Detection in Folksonomies}, address = {Athens, Greece}, author = {Andreas Hotho and Robert Jäschke and Christoph Schmitz and Gerd Stumme}, booktitle = {Prof. First International Conference on Semantics And Digital Media Technology (SAMT) (to appear)}, month = {dec}, year = 2006, vgwort = {27}, biburl = {http://www.bibsonomy.org/bibtex/25b4052dab83f889821e96cfa2d00f959/schmitz}, keywords = {2006 trend detection myown folksonomy} } @inproceedings{schmitz2006content, title = {Content Aggregation on Knowledge Bases using Graph Clustering}, address = {Budva, Montenegro}, author = {Christoph Schmitz and Andreas Hotho and Robert Jäschke and Gerd Stumme}, booktitle = {Proceedings of the 3rd European Semantic Web Conference}, month = {June}, year = 2006, vgwort = {27}, biburl = {http://www.bibsonomy.org/bibtex/27d738e62dffd04f709e66de94c6dee89/schmitz}, keywords = {aggregation content 2006 graphtheory myown ontology clustering} } @inproceedings{schmitz2006howto, title = {How to model Semantic Peer-to-Peer Overlays?}, address = {Dresden}, author = {Christoph Schmitz and Alexander Löser}, booktitle = {Proc. P2PIR Workshop, Informatik 2006}, month = {oct}, year = 2006, vgwort = {16}, biburl = {http://www.bibsonomy.org/bibtex/2af4e9264db9b7a77a75c9e2b70cbc56c/schmitz}, keywords = {2006 myown p2p} } @inbook{schmitz2006kollaboratives, title = {Kollaboratives Wissensmanagement}, author = {Christoph Schmitz and Andreas Hotho and Robert Jäschke and Gerd Stumme}, booktitle = {Semantic Web - Wege zur vernetzten Wissensgesellschaft}, editor = {Tassilo Pellegrini and Andreas Blumauer}, pages = {273-290}, publisher = {Springer}, year = 2006, url = {http://www.semantic-web.at/springer/abstracts/3d_Schmitz_KollabWM.pdf}, isbn = {3-540-29324-8}, vgwort = {32}, abstract = {Wissensmanagement in zentralisierten Wissensbasen erfordert einen hohen Aufwand für Erstellung und Wartung, und es entspricht nicht immer den Anforderungen der Benutzer. Wir geben in diesem Kapitel einen Überblick über zwei aktuelle Ansätze, die durch kollaboratives Wissensmanagement diese Probleme lösen können. Im Peer-to-Peer-Wissensmanagement unterhalten Benutzer dezentrale Wissensbasen, die dann vernetzt werden können, um andere Benutzer eigene Inhalte nutzen zu lassen. Folksonomies versprechen, die Wissensakquisition so einfach wie möglich zu gestalten und so viele Benutzer in den Aufbau und die Pflege einer gemeinsamen Wissensbasis einzubeziehen.}, biburl = {http://www.bibsonomy.org/bibtex/253e13744981f2c04d9239e0cf9b4e689/schmitz}, keywords = {2006 collaborative lang:de myown folksonomy knowledgemanagement} } @inproceedings{trias06jaeschke, title = {TRIAS - An Algorithm for Mining Iceberg Tri-Lattices}, address = {Hong Kong}, author = {Robert Jäschke and Andreas Hotho and Christoph Schmitz and Bernhard Ganter and Gerd Stumme}, journal = {Proc. 6th ICDM conference}, month = {December}, note = {(to appear)}, year = 2006, vgwort = {19}, biburl = {http://www.bibsonomy.org/bibtex/226ff196335caf137b1862d050bc1c515/schmitz}, keywords = {2006 tagging triadic trias myown folksonomy fca algorithm} } @inproceedings{hoser2006semantic, title = {Semantic Network Analysis of Ontologies}, address = {Budva, Montenegro}, author = {Bettina Hoser and Andreas Hotho and Robert Jäschke and Christoph Schmitz and Gerd Stumme}, booktitle = {Proceedings of the 3rd European Semantic Web Conference}, month = {June}, year = 2006, vgwort = {29}, biburl = {http://www.bibsonomy.org/bibtex/2fdd6a5446043dd8fc0fa8653f0ae39d0/schmitz}, keywords = {sna 2006 myown ontology semanticweb} } @inproceedings{hotho2006folkrank, title = {FolkRank: A Ranking Algorithm for Folksonomies}, author = {Andreas Hotho and Robert Jäschke and Christoph Schmitz and Gerd Stumme}, booktitle = {Proc. FGIR 2006}, pages = {to appear}, year = 2006, url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006folkrank.pdf}, vgwort = {8}, description = {Short version of http://www.bibsonomy.org/bibtex/07f061a8c294bae64831fbe92dc9ece48/stumme}, abstract = { In social bookmark tools users are setting up lightweight conceptual structures called folksonomies. Currently, the information retrieval support is limited. We present a formal model and a new search algorithm for folksonomies, called FolkRank, that exploits the structure of the folksonomy. The proposed algorithm is also applied to find communities within the folksonomy and is used to structure search results. All findings are demonstrated on a large scale dataset. A long version of this paper has been published at the European Semantic Web Conference 2006.}, biburl = {http://www.bibsonomy.org/bibtex/24d8b4f79814691fbe6db8357d63206a1/schmitz}, keywords = {2006 myown folksonomy folkrank} } @proceedings{alani2006proceedings, title = {Proceedings of the 2nd Workshop on Semantic Network Analysis}, editor = {Harith Alani and Bettina Hoser and Christoph Schmitz and Gerd Stumme}, year = 2006, url = {http://www.kde.cs.uni-kassel.de/ws/sna2006/}, vgwort = {68}, description = {Collocated with the 3rd European Semantic Web Conference, Budva, Montenegro, June 11-14, 2006}, biburl = {http://www.bibsonomy.org/bibtex/2786a452a14c5189d82dc56f16cc2a266/schmitz}, keywords = {sna workshop 2006 myown} } @inproceedings{jaeschke06wege, title = {Wege zur Entdeckung von Communities in Folksonomies}, address = {Halle-Wittenberg}, author = {Robert Jäschke and Andreas Hotho and Christoph Schmitz and Gerd Stumme}, booktitle = {Proc. 18. Workshop Grundlagen von Datenbanken}, editor = {Stefan Braß and Alexander Hinneburg}, month = {June}, pages = {80-84}, publisher = {Martin-Luther-Universität }, year = 2006, biburl = {http://www.bibsonomy.org/bibtex/22b6be3bd5daee7119973fcf69909956f/schmitz}, keywords = {2006 community myown folksonomy} }