Hyptrails: A bayesian approach for comparing hypotheses about human trails.
In:
24th International World Wide Web Conference (WWW2015).
ACM, Firenze, Italy, 2015.
P. Singer, D. Helic, A. Hotho und M. Strohmaier.
[doi]
[BibTeX]
Evaluating Assumptions about Social Tagging - A Study of User Behavior in BibSonomy.
In: T. Seidl, M. Hassani und C. Beecks
(Herausgeber):
Proceedings of the 16th LWA Workshops: KDML, IR and FGWM, Aachen, Germany, September 8-10, 2014., Seiten 18-19.
CEUR-WS.org, 2014.
Stephan Doerfel, Daniel Zoller, Philipp Singer, Thomas Niebler, Andreas Hotho und Markus Strohmaier.
[doi]
[BibTeX]
Ubiquitous Social Media Analysis Third International Workshops, MUSE 2012, Bristol, UK, September 24, 2012, and MSM 2012, Milwaukee, WI, USA, June 25, 2012, Revised Selected Papers.
2013.
[doi]
[BibTeX]
Proceedings of the Fifth ACM RecSys Workshop on Recommender Systems and the Social Web co-located with the 7th ACM Conference on Recommender Systems (RecSys 2013), Hong Kong, China, October 13, 2013..
CEUR Workshop Proceedings. Band 1066.
CEUR-WS.org, 2013.
Bamshad Mobasher, Dietmar Jannach, Werner Geyer, Jill Freyne, Andreas Hotho, Sarabjot Singh Anand und Ido Guy.
[doi]
[BibTeX]
Datenschutz im Web 2.0 am Beispiel des sozialen Tagging-Systems BibSonomy..
Informatik Spektrum, 35(1):12-23, 2012.
Beate Krause, Hana Lerch, Andreas Hotho, Alexander Roßnagel und Gerd Stumme.
[doi]
[BibTeX]
The Social Bookmark and Publication Management System BibSonomy.
The VLDB Journal, 19(6):849-875, 2010.
Dominik Benz, Andreas Hotho, Robert Jäschke, Beate Krause, Folke Mitzlaff, Christoph Schmitz und Gerd Stumme.
[doi]
[Kurzfassung]
[BibTeX]
Social resource sharing systems are central elements of the Web 2.0 and use the same kind of lightweight knowledge representation, called folksonomy. Their large user communities and ever-growing networks of user-generated content have made them an attractive object of investigation for researchers from different disciplines like Social Network Analysis, Data Mining, Information Retrieval or Knowledge Discovery. In this paper, we summarize and extend our work on different aspects of this branch of Web 2.0 research, demonstrated and evaluated within our own social bookmark and publication sharing system BibSonomy, which is currently among the three most popular systems of its kind. We structure this presentation along the different interaction phases of a user with our system, coupling the relevant research questions of each phase with the corresponding implementation issues. This approach reveals in a systematic fashion important aspects and results of the broad bandwidth of folksonomy research like capturing of emergent semantics, spam detection, ranking algorithms, analogies to search engine log data, personalized tag recommendations and information extraction techniques. We conclude that when integrating a real-life application like BibSonomy into research, certain constraints have to be considered; but in general, the tight interplay between our scientific work and the running system has made BibSonomy a valuable platform for demonstrating and evaluating Web 2.0 research.
Publikationsmanagement mit BibSonomy - ein Social-Bookmarking-System für Wissenschaftler.
HMD -- Praxis der Wirtschaftsinformatik, Heft 271:47-58, 2010.
Andreas Hotho, Dominik Benz, Folke Eisterlehner, Robert Jäschke, Beate Krause, Christoph Schmitz und Gerd Stumme.
[Kurzfassung]
[BibTeX]
Kooperative Verschlagwortungs- bzw. Social-Bookmarking-Systeme wie Delicious, Mister Wong oder auch unser eigenes System BibSonomy erfreuen sich immer größerer Beliebtheit und bilden einen zentralen Bestandteil des heutigen Web 2.0. In solchen Systemen erstellen Nutzer leichtgewichtige Begriffssysteme, sogenannte Folksonomies, die die Nutzerdaten strukturieren. Die einfache Bedienbarkeit, die Allgegenwärtigkeit, die ständige Verfügbarkeit, aber auch die Möglichkeit, Gleichgesinnte spontan in solchen Systemen zu entdecken oder sie schlicht als Informationsquelle zu nutzen, sind Gründe für ihren gegenwärtigen Erfolg. Der Artikel führt den Begriff Social Bookmarking ein und diskutiert zentrale Elemente (wie Browsing und Suche) am Beispiel von BibSonomy anhand typischer Arbeitsabläufe eines Wissenschaftlers. Wir beschreiben die Architektur von BibSonomy sowie Wege der Integration und Vernetzung von BibSonomy mit Content-Management-Systemen und Webauftritten. Der Artikel schließt mit Querbezügen zu aktuellen Forschungsfragen im Bereich Social Bookmarking.
Social Bookmarking-Systeme – die unerkannten Datensammler - Ungewollte personenbezogene Datenverabeitung?.
MultiMedia und Recht, 7:454-458, 2010.
Hana Lerch, Beate Krause, Andreas Hotho, Alexander Roßnagel und Gerd Stumme.
[BibTeX]
Community Assessment using Evidence Networks.
In:
Proceedings of the Workshop on Mining Ubiquitous and Social Environments (MUSE2010).
Barcelona, Spain, 2010.
Folke Mitzlaff, Martin Atzmüller, Dominik Benz, Andreas Hotho und Gerd Stumme.
[doi]
[Kurzfassung]
[BibTeX]
Community mining is a prominent approach for identifying (user) communities in social and ubiquitous contexts. While there are a variety of methods for community mining and detection, the effective evaluation and validation of the mined communities is usually non-trivial. Often there is no evaluation data at hand in order to validate the discovered groups. This paper proposes evidence networks using implicit information for the evaluation of communities. The presented evaluation approach is based on the idea of reconstructing existing social structures for the assessment and evaluation of a given clustering. We analyze and compare the presented evidence networks using user data from the real-world social
bookmarking application BibSonomy. The results indicate that the evidence
networks reflect the relative rating of the explicit ones very well.
Towards Understanding Spammers - Discovering Local Patterns for Concept Characterization and Description.
In: J. F. A. Knobbe
(Herausgeber):
Proc. LeGo-09: From Local Patterns to Global Models, Workshop at the 2009 European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases.
2009.
accepted
Martin Atzmueller, Florian Lemmerich, Beate Krause und Andreas Hotho.
[doi]
[BibTeX]
Who are the Spammers? Understandable Local Patterns for Concept Description.
In:
7th Conference on Computer Methods and Systems.
Krakow, Poland, 2009.
ISBN 83-916420-5-4
Martin Atzmueller, Florian Lemmerich, Beate Krause und Andreas Hotho.
[doi]
[BibTeX]
Managing publications and bookmarks with BibSonomy.
In: C. Cattuto, G. Ruffo und F. Menczer
(Herausgeber):
HT '09: Proceedings of the 20th ACM Conference on Hypertext and Hypermedia, Seiten 323-324.
ACM, New York, NY, USA, 2009.
Dominik Benz, Folke Eisterlehner, Andreas Hotho, Robert Jäschke, Beate Krause und Gerd Stumme.
[doi]
[Kurzfassung]
[BibTeX]
In this demo we present BibSonomy, a social bookmark and publication sharing system.
Social Bookmarking am Beispiel BibSonomy.
In:
A. Blumauer und T. Pellegrini (Herausgeber):
Social Semantic Web, Kapitel 18, Seiten 363-391.
Springer, Berlin, Heidelberg, 2009.
Andreas Hotho, Robert Jäschke, Dominik Benz, Miranda Grahl, Beate Krause, Christoph Schmitz und Gerd Stumme.
[doi]
[Kurzfassung]
[BibTeX]
BibSonomy ist ein kooperatives Verschlagwortungssystem (Social Bookmarking System), betrieben vom Fachgebiet Wissensverarbeitung
der Universität Kassel. Es erlaubt das Speichern und Organisieren von Web-Lesezeichen und Metadaten für wissenschaftlichePublikationen. In diesem Beitrag beschreiben wir die von BibSonomy bereitgestellte Funktionalität, die dahinter stehende Architektursowie das zugrunde liegende Datenmodell. Ferner erläutern wir Anwendungsbeispiele und gehen auf Methoden zur Analyse der in BibSonomy und ähnlichen Systemen enthaltenen Daten ein.
Testing and Evaluating Tag Recommenders in a Live System.
In: D. Benz und F. Janssen
(Herausgeber):
Workshop on Knowledge Discovery, Data Mining, and Machine Learning, Seiten 44 -51.
2009.
Robert Jäschke, Folke Eisterlehner, Andreas Hotho und Gerd Stumme.
[doi]
[Kurzfassung]
[BibTeX]
The challenge to provide tag recommendations for collaborative tagging systems has attracted quite some attention of researchers lately. However, most research focused on evaluation and development of appropriate methods rather than tackling the practical challenges of how to integrate recommendation methods into real tagging systems, record and evaluate their performance. In this paper we describe the tag recommendation framework we developed for our social bookmark and publication sharing system BibSonomy. With the intention to develop, test, and evaluate recommendation algorithms and supporting cooperation with researchers, we designed the framework to be easily extensible, open for a variety of methods, and usable independent from BibSonomy. Furthermore, this paper presents an evaluation of two exemplarily deployed recommendation methods, demonstrating the power of the framework.
Discovering Shared Conceptualizations in Folksonomies.
Web Semantics: Science, Services and Agents on the World Wide Web, 6(1):38-53, 2008.
Robert Jäschke, Andreas Hotho, Christoph Schmitz, Bernhard Ganter und Gerd Stumme.
[doi]
[Kurzfassung]
[BibTeX]
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.
Analysis of the Publication Sharing Behaviour in BibSonomy.
In:
Proceedings of the 15th International Conference on Conceptual Structures, Band 4604, Reihe LNCS.
Sheffield, England, 2007.
Robert Jäschke, Andreas Hotho, Christoph Schmitz und Gerd Stumme.
[Kurzfassung]
[BibTeX]
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.
Organizing Publications and Bookmarks in BibSonomy.
In: H. Alani, N. Noy, G. Stumme, P. Mika, Y. Sure und D. Vrandecic
(Herausgeber):
Workshop on Social and Collaborative Construction of Structured Knowledge (CKC 2007) at WWW 2007.
Banff, Canada, 2007.
Robert Jäschke, Miranda Grahl, Andreas Hotho, Beate Krause, Christoph Schmitz und Gerd Stumme.
[doi]
[BibTeX]
Emergent Semantics in BibSonomy.
In:
Proc. Workshop on Applications of Semantic Technologies, Informatik 2006, Band P-94.
Dresden, 2006.
Andreas Hotho, Robert Jäschke, Christoph Schmitz und Gerd Stumme.
[doi]
[BibTeX]
Information Retrieval in Folksonomies: Search and Ranking.
In:
Proceedings of the 3rd European Semantic Web Conference , Band 4011, Reihe LNCS, Seiten 411-426.
Springer, Budva, Montenegro, 2006.
Andreas Hotho, Robert Jäschke, Christoph Schmitz und Gerd Stumme.
[doi]
[BibTeX]
Wege zur Entdeckung von Communities in Folksonomies.
In: S. Braß und A. Hinneburg
(Herausgeber):
Proc. 18. Workshop Grundlagen von Datenbanken, Seiten 80-84.
Martin-Luther-Universität , Halle-Wittenberg, 2006.
Robert Jäschke, Andreas Hotho, Christoph Schmitz und Gerd Stumme.
[BibTeX]