@inproceedings{jaeschke07tagKdml,
  abstract = {Collaborative tagging systems allow users to assign
keywords—so called “tags”—to resources.
Tags are used for navigation, finding resources
and serendipitous browsing and thus provide an
immediate benefit for users. These systems usually
include tag recommendation mechanisms
easing the process of finding good tags for a resource,
but also consolidating the tag vocabulary
across users. In practice, however, only very basic
recommendation strategies are applied.

In this paper we present two tag recommendation
algorithms: an adaptation of user-based collaborative
filtering and a graph-based recommender
built on top of FolkRank, an adaptation of the
well-known PageRank algorithm that can cope
with undirected triadic hyperedges. We evaluate
and compare both algorithms on large-scale real
life datasets and show that both provide better
results than non-personalized baseline methods.
Especially the graph-based recommender outperforms
existing methods considerably.},
  added-at = {2008-01-17T12:54:10.000+0100},
  author = {Jäschke, Robert and Marinho, Leandro and Hotho, Andreas and Schmidt-Thieme, Lars and Stumme, Gerd},
  biburl = {http://www.bibsonomy.org/bibtex/2bfc43dfe59f9c0935ac3364b12e6d795/nepomuk},
  booktitle = {Workshop Proceedings of Lernen - Wissensentdeckung - Adaptivität (LWA 2007)},
  editor = {Hinneburg, Alexander},
  interhash = {7e212e3bac146d406035adebff248371},
  intrahash = {bfc43dfe59f9c0935ac3364b12e6d795},
  isbn = {978-3-86010-907-6},
  keywords = {2007 folksonomy from:jaeschke kdml l3s lwa myown recommender tagging},
  month = sep,
  pages = {13-20},
  publisher = {Martin-Luther-Universität Halle-Wittenberg},
  timestamp = {2008-01-17T12:54:10.000+0100},
  title = {Tag Recommendations in Folksonomies},
  url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2007/jaeschke07tagrecommendationsKDML.pdf},
  year = 2007
}

@article{sauermann2007entwickler,
  abstract = {Der Semantic Desktop macht den PC zum Denkwerkzeug.
Wir haben genug Platz, um all unsere E-Mails, MP3s, Photos, Videos und Dokumente am Desktop zu speichern. Das Problem ist, diese Information zu verwalten. Dateisysteme bieten nur starre Hierarchien an. Tim Berners-Lee und das W3C haben bereits weiter gedacht: Menschen denken in Konzepten, das Semantic Web bietet mit RDF und Ontologien einen auf HTTP, URIs und HTML aufbauenden Standard zur Annotation und Suche. Der Semantic Desktop bringt Betriebssysteme und Anwendungen damit weg von den Dateien, auf die Stufe der Gedanken.},
  added-at = {2008-01-10T14:06:40.000+0100},
  author = {Sauermann, Leo},
  biburl = {http://www.bibsonomy.org/bibtex/2cb190556e291761fc1bdf16f39c0751f/nepomuk},
  description = {Article about Semantic Desktop and NEPOMUK using Personas to illustrate the examples.},
  editor = {Bechtel, Nicole and Lippert, Robert and Pohl, Jacqueline},
  interhash = {7506e9bb0dc394e77cf525debb30d477},
  intrahash = {cb190556e291761fc1bdf16f39c0751f},
  journal = {Entwickler Magazin},
  keywords = {12 2007 dfki from:leobard lang:de nepomuk semanticdesktop semanticweb wp2},
  month = {12},
  note = {Aimed for Popular Science and Developers},
  number = 1,
  pages = {119-122},
  timestamp = {2008-01-10T14:06:40.000+0100},
  title = {Semantic Web am Desktop},
  url = {http://entwickler-magazin.de/zonen/magazine/psecom,id,17,ausgabe,234,p,0.html},
  volume = 2008,
  year = 2007
}

@inproceedings{groza+2007a,
  abstract = {This paper introduces the NEPOMUK project which aims to create a
	
	standard and reference implementation for the Social Semantic Desktop.
	We outline
	
	the requirements and functionalities that were identified for a useful
	Semantic Desktop
	
	system and present an architecture that fulfills these requirements
	which was acquired
	
	by incremental refinement of the architecture of existing Semantic
	Desktop prototypes.
	
	The NEPOMUK project is primarily motivated by three real-life industrial
	use-cases,
	
	we briefly outline these and the processes used to extract required
	functionalities from
	
	the people working in these areas today, and we present a selection
	of typical tasks
	
	where the Semantic Desktop could be of benefit.},
  added-at = {2007-11-20T16:26:24.000+0100},
  author = {Groza, Tudor and Handschuh, Siegfried and Moeller, Knud and Grimnes, Gunnar and Sauermann, Leo and Minack, Enrico and Mesnage, Cedric and Jazayeri, Mehdi and Reif, Gerald and Gudjonsdottir, Rosa},
  biburl = {http://www.bibsonomy.org/bibtex/208ed8fb18d3b899aa555ba5028287c4f/nepomuk},
  booktitle = {Proceedings of I-Semantics' 07},
  description = {iknow2007 publications},
  doi = {ISSN 0948-6968},
  editor = {Pellegrini, Tassilo and Schaffert, Sebastian},
  interhash = {6438548450506fa5dcce9867981ef444},
  intrahash = {08ed8fb18d3b899aa555ba5028287c4f},
  keywords = {09 2007 dfki from:leobard imported nepomuk wp2},
  owner = {sauermann},
  pages = {pp. 201-211},
  pdf = {groza+2007a.pdf},
  publisher = {JUCS},
  timestamp = {2007-11-20T16:26:24.000+0100},
  title = {The NEPOMUK Project - On the way to the Social Semantic Desktop},
  url = {http://www.dfki.uni-kl.de/~sauermann/papers/groza+2007a.pdf},
  year = 2007
}

@inproceedings{nadeem+2007a,
  abstract = {This paper examines issues on Philosophy of Artificial Intelligence
	(AI),
	
	Cognitive Science and Mental Models. The paper provides a philosophical
	grounding
	
	for the researchers in Personal Information Management (PIM). An overview
	is given on
	
	various philosophical aspects of computer-based activities. Discussions
	on the theories
	
	relevant to understand the goals for the Semantic Desktop community
	are elicited.
	
	Philosophical theories are not immediately transparent to the programmers,
	but the
	
	ideas discussed here are intended to emphasize a theoretical foundation,
	with respect to
	
	Semantic Desktop long term goals. The goal of this paper is to examine
	the theories of
	
	Philosophy and to provide a conceptual idea to design user-intuitive
	Semantic Desktops.
	
	The paper tries to induce scientific curiosity among the Semantic
	Desktop researchers
	
	as well as to develop the future Semantic Desktops to realize Weak
	AI.},
  added-at = {2007-11-20T16:26:24.000+0100},
  author = {Nadeem, Danish and Sauermann, Leo},
  biburl = {http://www.bibsonomy.org/bibtex/256f149302cf8742f8d70edc0d9a7d2ba/nepomuk},
  booktitle = {Proceedings of I-Semantics' 07},
  description = {iknow2007 publications},
  doi = {ISSN 0948-6968},
  editor = {Pellegrini, Tassilo and Schaffert, Sebastian},
  interhash = {bc8bcaa57fd4e2118c0cbc5d3ce63ffd},
  intrahash = {56f149302cf8742f8d70edc0d9a7d2ba},
  keywords = {09 2007 dfki from:leobard imported nepomuk wp2},
  owner = {sauermann},
  pages = {pp. 211-220},
  pdf = {nadeem+2007a.pdf},
  publisher = {JUCS},
  timestamp = {2007-11-20T16:26:24.000+0100},
  title = {From Philosophy and Mental-Models to Semantic Desktop research: Theoretical
	Overview},
  url = {http://www.dfki.uni-kl.de/~sauermann/papers/nadeem+2007a.pdf},
  year = 2007
}

@inproceedings{adrian+2007a,
  abstract = {ConTag is an approach to generate semantic tag recommendations for
	documents
	
	based on Semantic Web ontologies and Web 2.0 services. We designed
	and implemented
	
	a process to normalize documents to RDF format, extract document topics
	
	using Web 2.0 services and finally match extracted topics to a Semantic
	Web ontology.
	
	Due to ConTag we are able to show that the information provided by
	Web 2.0 services
	
	in combination with a Semantic Web ontology enables the generation
	of relevant semantic
	
	tag recommendations for documents. The main contribution of this work
	is a
	
	semantic tag recommendation process based on a choreography of Web
	2.0 services.},
  added-at = {2007-11-20T16:26:24.000+0100},
  author = {Adrian, Benjamin and Sauermann, Leo and Roth-Berghofer, Thomas},
  biburl = {http://www.bibsonomy.org/bibtex/2baf236eafcb9b39d34339a798bfef58b/nepomuk},
  booktitle = {Proceedings of I-Semantics' 07},
  description = {iknow2007 publications},
  doi = {ISSN 0948-6968},
  editor = {Pellegrini, Tassilo and Schaffert, Sebastian},
  interhash = {1acc5f78c84ea7de0cc50dc3c1e4e994},
  intrahash = {baf236eafcb9b39d34339a798bfef58b},
  keywords = {09 2007 dfki from:leobard imported nepomuk wp2},
  owner = {sauermann},
  pages = {pp. 297-304},
  pdf = {adrian+2007a.pdf},
  publisher = {JUCS},
  timestamp = {2007-11-20T16:26:24.000+0100},
  title = {ConTag: A semantic tag recommendation system},
  url = {http://www.dfki.uni-kl.de/~sauermann/papers/horak+2007a.pdf},
  year = 2007
}

@inproceedings{sauermann+2007b,
  added-at = {2007-11-20T16:26:24.000+0100},
  author = {Sauermann, Leo and van Elst, Ludger and Dengel, Andreas},
  biburl = {http://www.bibsonomy.org/bibtex/2e9a5c22185a66410ca99293d3e116387/nepomuk},
  booktitle = {Proceedings of I-Semantics' 07},
  description = {iknow2007 publications},
  doi = {ISSN 0948-6968},
  editor = {Pellegrini, Tassilo and Schaffert, Sebastian},
  interhash = {39ef174f8932c09d0aada4eaac9ee45a},
  intrahash = {e9a5c22185a66410ca99293d3e116387},
  keywords = {09 2007 dfki from:leobard imported nepomuk wp2},
  owner = {sauermann},
  pages = {pp. 270-277},
  pdf = {sauermann+2007b.pdf},
  publisher = {JUCS},
  timestamp = {2007-11-20T16:26:24.000+0100},
  title = {PIMO - a Framework for Representing Personal Information Models},
  url = {http://www.dfki.uni-kl.de/~sauermann/papers/sauermann+2007b.pdf},
  year = 2007
}

@inproceedings{jaeschke2007tag,
  abstract = {Collaborative tagging systems allow users to assign keywords—so called “tags”—to resources. Tags are used for navigation, finding resources and serendipitous browsing and thus provide an immediate benefit for users. These systems usually include tag recommendation mechanisms easing the process of finding good tags for a resource, but also consolidating the tag vocabulary across users. In practice, however, only very basic recommendation strategies are applied.
In this paper we evaluate and compare two recommendation algorithms on largescale real life datasets: an adaptation of user-based collaborative filtering and a graph-based recommender built on top of FolkRank. We show that both provide better results than non-personalized baseline methods. Especially the graph-based recommender outperforms existing methods considerably.},
  added-at = {2007-11-12T12:55:47.000+0100},
  address = {Berlin, Heidelberg},
  author = {Jäschke, Robert and Marinho, Leandro Balby and Hotho, Andreas and Schmidt-Thieme, Lars and Stumme, Gerd},
  biburl = {http://www.bibsonomy.org/bibtex/2bb8ecec699a2f129322fe334747c6aef/nepomuk},
  booktitle = {Knowledge Discovery in Databases: PKDD 2007, 11th European Conference on Principles and Practice of Knowledge Discovery in Databases},
  editor = {Kok, Joost N. and Koronacki, Jacek and de Mántaras, Ramon López and Matwin, Stan and Mladenic, Dunja and Skowron, Andrzej},
  ee = {http://dx.doi.org/10.1007/978-3-540-74976-9_52},
  interhash = {7e212e3bac146d406035adebff248371},
  intrahash = {bb8ecec699a2f129322fe334747c6aef},
  isbn = {978-3-540-74975-2},
  keywords = {2007 folksonomy from:jaeschke l3s myown recommender tagging wp5},
  pages = {506-514},
  publisher = {Springer},
  series = {Lecture Notes in Computer Science},
  timestamp = {2007-11-12T12:55:47.000+0100},
  title = {Tag Recommendations in Folksonomies},
  url = {http://dx.doi.org/10.1007/978-3-540-74976-9_52},
  volume = 4702,
  year = 2007
}

@inproceedings{jaeschke2007analysis,
  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.},
  added-at = {2007-06-13T16:58:36.000+0200},
  address = {Sheffield, England},
  author = {Jäschke, Robert and Hotho, Andreas and Schmitz, Christoph and Stumme, Gerd},
  biburl = {http://www.bibsonomy.org/bibtex/22cbbe0790e81d5af7927ba51098fa126/nepomuk},
  booktitle = {Proceedings of the 15th International Conference on Conceptual Structures},
  interhash = {4352d1142afa561460511b22d4ce5103},
  intrahash = {2cbbe0790e81d5af7927ba51098fa126},
  keywords = {2007 analysis bibsonomy bookmarking fca folksonomy from:jaeschke iccs myown social trias},
  month = {July},
  timestamp = {2007-06-13T16:58:36.000+0200},
  title = {Analysis of the Publication Sharing Behaviour in {BibSonomy}},
  year = 2007
}

@inproceedings{Ong_et_al._Pattern-Based_Task_Management:_Pattern_Lifecycle_and_Knowledge_Management,
  abstract = {Due to their different provenience, a thorough integration
between Knowledge Management Systems (KMS) and Knowledge Work Support, e.g., Task Management Systems, is still missing. In the present paper we identify several points of fracture in the information transfer process between both. Hereupon we argue that the recently suggested Pattern-Based Task Management (PBTM) better integrates the two paradigms, leading to an entanglement between both sides. It results a knowledge lifecycle that goes beyond single-loop learning. By the introduction of task patterns that guide users in work planning and execution and motivate collective improvement, PBTM even fosters double-loop learning.},
  added-at = {2007-06-11T19:44:18.000+0200},
  author = {Ong, Ernie and Grebner, Olaf and Riss, Uwe V.},
  biburl = {http://www.bibsonomy.org/bibtex/21c5a79f7a283c2e1967a9b10cfd43fd4/nepomuk},
  booktitle = {4th Conference on Professional Knowledge Management - Experiences and Visions -, March 28. - 30. 2007, Potsdam, Germany},
  editor = {Gronau, Norbert},
  interhash = {90a1057600b56f123f6479ac5e67dc0c},
  intrahash = {1c5a79f7a283c2e1967a9b10cfd43fd4},
  keywords = {03 2007 SAP WP10 from:ogr lang:en pattern task taskmanagement},
  month = {03},
  publisher = {GITO Verlag Berlin},
  timestamp = {2007-06-11T19:44:18.000+0200},
  title = {Pattern-Based Task Management: Pattern Lifecycle and Knowledge Management - Benefits and open issues},
  url = {http://nepomuk.semanticdesktop.org/xwiki/bin/download/Main/WP3000/Ong+Grebner+Riss+%282007%29+Pattern-Based+Task+Management+Pattern+Lifecycle+and+Knowledge+Management.pdf},
  year = 2007
}

@misc{WM07_Poster,
  added-at = {2007-06-11T19:44:18.000+0200},
  author = {Grebner, Olaf and Riss, Uwe V. and Ong, Ernie and Brunzel, Marko and Roth-Berghofer, Thomas and Bernardi, Ansgar},
  biburl = {http://www.bibsonomy.org/bibtex/2ce408545ef5764e650fe4768882397df/nepomuk},
  booktitle = {4th Conference on Professional Knowledge Management - Experiences and Visions -, March 28. - 30. 2007, Potsdam, Germany},
  editor = {Gronau, Norbert},
  interhash = {968036040070c2e1c56a5801738debbf},
  intrahash = {ce408545ef5764e650fe4768882397df},
  keywords = {03 2007 NEPOMUK SAP Semantic Social WP10 announce desktop from:ogr lang:en pattern poster task taskmanagement},
  publisher = {GITO Verlag Berlin},
  timestamp = {2007-06-11T19:44:18.000+0200},
  title = {Task Management for the NEPOMUK Social Semantic Desktop (Poster)},
  year = 2007
}

@article{Riss_et_al._Pattern-based_task_management&implicit_knowledge,
  abstract = {Knowledge work often suffers from the inexpertness of novices in an organization. Therefore, one important goal within knowledge work is to turn novices into experts. For gaining expertise an important factor is implicit knowledge (IK). Even if Information Technology cannot transfer IK directly, it can support the transfer more or less efficiently. We present a knowledge management system, the pattern-based task management (PBTM), which addresses this difficult challenge. Invoking the model of basic communication [Wal05], we show how PBTM aids the experienced user to better provide contextualized knowledge and the inexperienced user to better internalize it again in order to gain expertise.
},
  added-at = {2007-06-11T19:44:18.000+0200},
  author = {Riss, Uwe V. and Jarodzka, Halszka M. and Grebner, Olaf},
  biburl = {http://www.bibsonomy.org/bibtex/23bf7d3b1ad94c386bce6e79515067ceb/nepomuk},
  booktitle = {4th Conference on Professional Knowledge Management - Experiences and Visions -, March 28. - 30. 2007, Potsdam, Germany},
  editor = {Gronau, Norbert},
  interhash = {2694b840f940f49332b00d26fd3f5048},
  intrahash = {3bf7d3b1ad94c386bce6e79515067ceb},
  keywords = {03 2007 SAP WP10 from:ogr lang:en pattern task taskmanagement},
  month = {03},
  publisher = {GITO Verlag Berlin},
  timestamp = {2007-06-11T19:44:18.000+0200},
  title = {Pattern-based task management & implicit knowledge - How to mobilize implicit knowledge},
  url = {http://nepomuk.semanticdesktop.org/xwiki/bin/download/Main/WP3000/Riss+Jarodzka+Grebner+%282007%29+Pattern-based+task+management+%26+implicit+knowledge.pdf},
  year = 2007
}

@proceedings{Jarodzka_et_al._Motivate_users_to_construct_collective_knowledge_via_IT,
  abstract = {Collective knowledge construction is often inhibited by
motivational barriers. In this paper we present pattern-based task management (PBTM) as a system to construct collective knowledge and show ways how to foster motivation. We present the motivational structure of the knowledge sharing situation as a social dilemma which feeds free-riding. To avoid this, we concentrate on ways to overcome the dilemma from a psychological perspective by presenting concrete suggestions on increasing users' motivation to actively participate in PBTM. The goal is to foster collective knowledge con-struction as a social process.},
  added-at = {2007-06-11T19:44:18.000+0200},
  author = {Jarodzka, Halszka M. and Grebner, Olaf and Riss, Uwe V. and Ong, Ernie},
  biburl = {http://www.bibsonomy.org/bibtex/2f235aaa310ac01a253c0ef526dace804/nepomuk},
  booktitle = {4th Conference on Professional Knowledge Management - Experiences and Visions -, March 28. - 30. 2007, Potsdam, Germany},
  editor = {Gronau, Norbert},
  interhash = {cb72d374190cd75d091d1e85fc18ca63},
  intrahash = {f235aaa310ac01a253c0ef526dace804},
  keywords = {03 2007 SAP WP10 from:ogr lang:en pattern task taskmanagement},
  month = {03},
  publisher = {GITO Verlag Berlin},
  timestamp = {2007-06-11T19:44:18.000+0200},
  title = {Motivate users to construct collective knowledge via IT - A psychological view on pattern-based task management},
  url = {http://nepomuk.semanticdesktop.org/xwiki/bin/download/Main/WP3000/Jarodzka+Grebner+Ong+Riss+%282007%29+Motivate+users+to+construct+collective+knowledge+via+IT.pdf},
  year = 2007
}