| Author | Title | Year | Journal/Proceedings | Reftype | DOI/URL |
|---|---|---|---|---|---|
| Doerfel, S. & Jäschke, R. | An Analysis of Tag-Recommender Evaluation Procedures | 2013 | Proceedings of the 7th ACM conference on Recommender systems, pp. 343-346 | inproceedings | DOI URL |
| Abstract: Since the rise of collaborative tagging systems on the web, the tag recommendation task -- suggesting suitable tags to users of such systems while they add resources to their collection -- has been tackled. However, the (offline) evaluation of tag recommendation algorithms usually suffers from difficulties like the sparseness of the data or the cold start problem for new resources or users. Previous studies therefore often used so-called post-cores (specific subsets of the original datasets) for their experiments. In this paper, we conduct a large-scale experiment in which we analyze different tag recommendation algorithms on different cores of three real-world datasets. We show, that a recommender's performance depends on the particular core and explore correlations between performances on different cores. | |||||
BibTeX:
@inproceedings{doerfel2013analysis,
author = {Doerfel, Stephan and Jäschke, Robert},
title = {An Analysis of Tag-Recommender Evaluation Procedures},
booktitle = {Proceedings of the 7th ACM conference on Recommender systems},
publisher = {ACM},
year = {2013},
pages = {343--346},
url = {http://doi.acm.org/10.1145/2507157.2507222},
doi = {http://dx.doi.org/10.1145/2507157.2507222}
}
|
|||||
| Doerfel, S. & Jäschke, R. | An analysis of tag-recommender evaluation procedures | 2013 | Proceedings of the 7th ACM conference on Recommender systems, pp. 343-346 | inproceedings | DOI URL |
| Abstract: Since the rise of collaborative tagging systems on the web, the tag recommendation task -- suggesting suitable tags to users of such systems while they add resources to their collection -- has been tackled. However, the (offline) evaluation of tag recommendation algorithms usually suffers from difficulties like the sparseness of the data or the cold start problem for new resources or users. Previous studies therefore often used so-called post-cores (specific subsets of the original datasets) for their experiments. In this paper, we conduct a large-scale experiment in which we analyze different tag recommendation algorithms on different cores of three real-world datasets. We show, that a recommender's performance depends on the particular core and explore correlations between performances on different cores. | |||||
BibTeX:
@inproceedings{doerfel2013analysis,
author = {Doerfel, Stephan and Jäschke, Robert},
title = {An analysis of tag-recommender evaluation procedures},
booktitle = {Proceedings of the 7th ACM conference on Recommender systems},
publisher = {ACM},
year = {2013},
pages = {343--346},
url = {https://www.kde.cs.uni-kassel.de/pub/pdf/doerfel2013analysis.pdf},
doi = {http://dx.doi.org/10.1145/2507157.2507222}
}
|
|||||
| Krause, B., Lerch, H., Hotho, A., Roßnagel, A. & Stumme, G. | Datenschutz im Web 2.0 am Beispiel des sozialen Tagging-Systems BibSonomy. [BibTeX] |
2012 | Informatik Spektrum Vol. 35(1), pp. 12-23 |
article | URL |
BibTeX:
@article{journals/insk/KrauseLHRS12,
author = {Krause, Beate and Lerch, Hana and Hotho, Andreas and Roßnagel, Alexander and Stumme, Gerd},
title = {Datenschutz im Web 2.0 am Beispiel des sozialen Tagging-Systems BibSonomy.},
journal = {Informatik Spektrum},
year = {2012},
volume = {35},
number = {1},
pages = {12-23},
url = {http://dblp.uni-trier.de/db/journals/insk/insk35.html#KrauseLHRS12}
}
|
|||||
| Benz, D., Hotho, A., Jäschke, R., Krause, B., Mitzlaff, F., Schmitz, C. & Stumme, G. | The social bookmark and publication management system bibsonomy | 2010 | The VLDB Journal Vol. 19(6), pp. 849-875 |
article | DOI URL |
| Abstract: 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. | |||||
BibTeX:
@article{benz2010social,
author = {Benz, Dominik and Hotho, Andreas and Jäschke, Robert and Krause, Beate and Mitzlaff, Folke and Schmitz, Christoph and Stumme, Gerd},
title = {The social bookmark and publication management system bibsonomy},
journal = {The VLDB Journal},
publisher = {Springer},
year = {2010},
volume = {19},
number = {6},
pages = {849-875},
url = {http://dx.doi.org/10.1007/s00778-010-0208-4},
doi = {http://dx.doi.org/10.1007/s00778-010-0208-4}
}
|
|||||
| Benz, D., Hotho, A., Jäschke, R., Krause, B., Mitzlaff, F., Schmitz, C. & Stumme, G. | The social bookmark and publication management system BibSonomy | 2010 | The VLDB Journal | article | DOI URL |
| Abstract: 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. | |||||
BibTeX:
@article{benz2010social,
author = {Benz, Dominik and Hotho, Andreas and Jäschke, Robert and Krause, Beate and Mitzlaff, Folke and Schmitz, Christoph and Stumme, Gerd},
title = {The social bookmark and publication management system BibSonomy},
journal = {The VLDB Journal},
publisher = {Springer},
year = {2010},
url = {http://dx.doi.org/10.1007/s00778-010-0208-4},
doi = {http://dx.doi.org/10.1007/s00778-010-0208-4}
}
|
|||||
| Krause, B., Lerch, H., Hotho, A., Roßnagel, A. & Stumme, G. | Datenschutz im Web 2.0 am Beispiel des sozialen Tagging-Systems BibSonomy | 2010 | Informatik-Spektrum, pp. 1-12 | article | DOI URL |
| Abstract: Soziale Tagging-Systeme gehören zu den in den vergangenen Jahren entstandenen Web2.0-Systemen. Sie ermöglichen es Anwendern, beliebige Informationen in das Internet einzustellen und untereinander auszutauschen. Je nach Anbieter verlinken Nutzer Videos, Fotos oder Webseiten und beschreiben die eingestellten Medien mit entsprechenden Schlagwörtern (Tags). Die damit einhergehende freiwillige Preisgabe oftmals persönlicher Informationen wirft Fragen im Bereich der informationellen Selbstbestimmung auf. Dieses Grundrecht gewährleistet dem Einzelnen, grundsätzlich selbst über die Preisgabe und Verwendung seiner persönlichen Daten zu bestimmen. Für viele Funktionalitäten, wie beispielsweise Empfehlungsdienste oder die Bereitstellung einer API, ist eine solche Kontrolle allerdings schwierig zu gestalten. Oftmals existieren keine Richtlinien, inwieweit Dienstanbieter und weitere Dritte diese öffentlichen Daten (und weitere Daten, die bei der Nutzung des Systems anfallen) nutzen dürfen. Dieser Artikel diskutiert anhand eines konkreten Systems typische, für den Datenschutz relevante Funktionalitäten und gibt Handlungsanweisungen für eine datenschutzkonforme technische Gestaltung. | |||||
BibTeX:
@article{springerlink:10.1007/s00287-010-0485-8,
author = {Krause, Beate and Lerch, Hana and Hotho, Andreas and Roßnagel, Alexander and Stumme, Gerd},
title = {Datenschutz im Web 2.0 am Beispiel des sozialen Tagging-Systems BibSonomy},
journal = {Informatik-Spektrum},
publisher = {Springer},
year = {2010},
pages = {1-12},
url = {http://dx.doi.org/10.1007/s00287-010-0485-8},
doi = {http://dx.doi.org/10.1007/s00287-010-0485-8}
}
|
|||||
| Körner, C., Benz, D., Strohmaier, M., Hotho, A. & Stumme, G. | Stop Thinking, start Tagging - Tag Semantics emerge from Collaborative Verbosity | 2010 | Proceedings of the 19th International World Wide Web Conference (WWW 2010) | inproceedings | URL |
| Abstract: Recent research provides evidence for the presence of emergent semantics in collaborative tagging systems. While several methods have been proposed, little is known about the factors that influence the evolution of semantic structures in these systems. A natural hypothesis is that the quality of the emergent semantics depends on the pragmatics of tagging: Users with certain usage patterns might contribute more to the resulting semantics than others. In this work, we propose several measures which enable a pragmatic differentiation of taggers by their degree of contribution to emerging semantic structures. We distinguish between categorizers, who typically use a small set of tags as a replacement for hierarchical classification schemes, and describers, who are annotating resources with a wealth of freely associated, descriptive keywords. To study our hypothesis, we apply semantic similarity measures to 64 different partitions of a real-world and large-scale folksonomy containing different ratios of categorizers and describers. Our results not only show that ‘verbose’ taggers are most useful for the emergence of tag semantics, but also that a subset containing only 40% of the most ‘verbose’ taggers can produce results that match and even outperform the semantic precision obtained from the whole dataset. Moreover, the results suggest that there exists a causal link between the pragmatics of tagging and resulting emergent semantics. This work is relevant for designers and analysts of tagging systems interested (i) in fostering the semantic development of their platforms, (ii) in identifying users introducing “semantic noise”, and (iii) in learning ontologies. | |||||
BibTeX:
@inproceedings{koerner2010thinking,
author = {Körner, Christian and Benz, Dominik and Strohmaier, Markus and Hotho, Andreas and Stumme, Gerd},
title = {Stop Thinking, start Tagging - Tag Semantics emerge from Collaborative Verbosity},
booktitle = {Proceedings of the 19th International World Wide Web Conference (WWW 2010)},
publisher = {ACM},
year = {2010},
url = {http://www.kde.cs.uni-kassel.de/benz/papers/2010/koerner2010thinking.pdf}
}
|
|||||
| Lerch, H., Krause, B., Hotho, A., Roßnagel, A. & Stumme, G. | Social Bookmarking-Systeme – die unerkannten Datensammler - Ungewollte personenbezogene Datenverabeitung? [BibTeX] |
2010 | MultiMedia und Recht Vol. 7, pp. 454-458 |
article | |
BibTeX:
@article{lerch2010datenschutz,
author = {Lerch, Hana and Krause, Beate and Hotho, Andreas and Roßnagel, Alexander and Stumme, Gerd},
title = {Social Bookmarking-Systeme – die unerkannten Datensammler - Ungewollte personenbezogene Datenverabeitung?},
journal = {MultiMedia und Recht},
year = {2010},
volume = {7},
pages = {454-458}
}
|
|||||
| Mitzlaff, F., Atzmüller, M., Benz, D., Hotho, A. & Stumme, G. | Community Assessment using Evidence Networks | 2010 | Proceedings of the Workshop on Mining Ubiquitous and Social Environments (MUSE2010) | inproceedings | URL |
| Abstract: 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 okmarking application BibSonomy. The results indicate that the evidence tworks reflect the relative rating of the explicit ones very well. |
|||||
BibTeX:
@inproceedings{mitzlaff2010community,
author = {Mitzlaff, Folke and Atzmüller, Martin and Benz, Dominik and Hotho, Andreas and Stumme, Gerd},
title = {Community Assessment using Evidence Networks},
booktitle = {Proceedings of the Workshop on Mining Ubiquitous and Social Environments (MUSE2010)},
year = {2010},
url = {http://www.kde.cs.uni-kassel.de/ws/muse2010}
}
|
|||||
| Mitzlaff, F., Benz, D., Stumme, G. & Hotho, A. | Visit me, click me, be my friend: An analysis of evidence networks of user relationships in Bibsonomy [BibTeX] |
2010 | Proceedings of the 21st ACM conference on Hypertext and hypermedia | inproceedings | |
BibTeX:
@inproceedings{eisterlehner2010visit,
author = {Mitzlaff, Folke and Benz, Dominik and Stumme, Gerd and Hotho, Andreas},
title = {Visit me, click me, be my friend: An analysis of evidence networks of user relationships in Bibsonomy},
booktitle = {Proceedings of the 21st ACM conference on Hypertext and hypermedia},
year = {2010}
}
|
|||||
| Benz, D., Eisterlehner, F., Hotho, A., Jäschke, R., Krause, B. & Stumme, G. | Managing publications and bookmarks with BibSonomy | 2009 | HT '09: Proceedings of the 20th ACM Conference on Hypertext and Hypermedia, pp. 323-324 | inproceedings | DOI URL |
| Abstract: In this demo we present BibSonomy, a social bookmark and publication sharing system. | |||||
BibTeX:
@inproceedings{benz2009managing,
author = {Benz, Dominik and Eisterlehner, Folke and Hotho, Andreas and Jäschke, Robert and Krause, Beate and Stumme, Gerd},
title = {Managing publications and bookmarks with BibSonomy},
booktitle = {HT '09: Proceedings of the 20th ACM Conference on Hypertext and Hypermedia},
publisher = {ACM},
year = {2009},
pages = {323--324},
url = {http://portal.acm.org/citation.cfm?doid=1557914.1557969#},
doi = {http://dx.doi.org/10.1145/1557914.1557969}
}
|
|||||
| Jäschke, R., Eisterlehner, F., Hotho, A. & Stumme, G. | Testing and Evaluating Tag Recommenders in a Live System | 2009 | Workshop on Knowledge Discovery, Data Mining, and Machine Learning, pp. 44 -51 | inproceedings | URL |
| Abstract: 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 velopment of appropriate methods rather than tackling the practical challenges of how to integrate recommendation methods into real tagging systems, record and evaluate their performance. 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, en for a variety of methods, and usable independent from BibSonomy. Furthermore, this paper presents an evaluation of two exemplarily deployed recommendation methods, demonstrating e power of the framework. |
|||||
BibTeX:
@inproceedings{jaeschke2009testingKDML,
author = {Jäschke, Robert and Eisterlehner, Folke and Hotho, Andreas and Stumme, Gerd},
title = {Testing and Evaluating Tag Recommenders in a Live System},
booktitle = {Workshop on Knowledge Discovery, Data Mining, and Machine Learning},
year = {2009},
pages = {44 --51},
url = {http://lwa09.informatik.tu-darmstadt.de/pub/KDML/WebHome/kdml09_R.Jaeschke_et_al.pdf}
}
|
|||||
| Jäschke, R., Hotho, A., Schmitz, C., Ganter, B. & Stumme, G. | Discovering Shared Conceptualizations in Folksonomies [BibTeX] |
2008 | Journal of Web Semantics Vol. 6(1), pp. 38-53 |
article | URL |
BibTeX:
@article{jaeschke08discovering,
author = {Jäschke, Robert and Hotho, Andreas and Schmitz, Christoph and Ganter, Bernhard and Stumme, Gerd},
title = {Discovering Shared Conceptualizations in Folksonomies},
journal = {Journal of Web Semantics},
year = {2008},
volume = {6},
number = {1},
pages = {38-53},
url = {http://dx.doi.org/10.1016/j.websem.2007.11.004}
}
|
|||||
| Cao, Y., Ehms, K., Fiedler, S., Hofer, M., Kaiamo, A.-K., Kieslinger, B., Klamma, R., Krause, B., Kravcik, M., Ryyppö, T., Spaniol, M., Stumme, G. & Wild, F. | Case study on social software use in distributed working environments [BibTeX] |
2007 | misc | URL | |
BibTeX:
@misc{cao07casestudy,
author = {Cao, Yiwei and Ehms, Karsten and Fiedler, Sebastian and Hofer, Margit and Kaiamo, Anna-Kaarina and Kieslinger, Barbara and Klamma, Ralf and Krause, Beate and Kravcik, Milos and Ryyppö, Tommi and Spaniol, Marc and Stumme, Gerd and Wild, Fridolin},
title = {Case study on social software use in distributed working environments},
year = {2007},
note = {Deliverable 15.2, European Network of Excellence ``Prolearn - Professional E-Learning''},
url = {http://www.prolearn-project.org/deliverables/view?id=1432}
}
|
|||||
| Santos-Neto, E., Ripeanu, M. & Iamnitchi, A. | Tracking User Attention in Collaborative Tagging Communities [BibTeX] |
2007 | misc | URL | |
BibTeX:
@misc{santosneto07,
author = {Santos-Neto, Elizeu and Ripeanu, Matei and Iamnitchi, Adriana},
title = {Tracking User Attention in Collaborative Tagging Communities},
year = {2007},
url = {http://arxiv.org/pdf/0705.1013}
}
|
|||||
| Hotho, A., Jäschke, R., Schmitz, C. & Stumme, G. | BibSonomy: A Social Bookmark and Publication Sharing System [BibTeX] |
2006 | Proc. of the ICCS 2006 Conceptual Structures Tool Interoperability
Workshop |
inproceedings | |
BibTeX:
@inproceedings{hjss06bibsonomy,
author = {Hotho, Andreas and Jäschke, Robert and Schmitz, Christoph and Stumme, Gerd},
title = {BibSonomy: A Social Bookmark and Publication Sharing System},
booktitle = {Proc. of the ICCS 2006 Conceptual Structures Tool Interoperability
|
|||||
| Hotho, A., Jäschke, R., Schmitz, C. & Stumme, G. | BibSonomy: A Social Bookmark and Publication Sharing System | 2006 | Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures, pp. 87-102 | inproceedings | URL |
| Abstract: Social bookmark tools are rapidly emerging on the Web. In such
stems users are setting up lightweight conceptual structures lled folksonomies. The reason for their immediate success is the ct that no specific skills are needed for participating. In this per we specify a formal model for folksonomies and briefly describe r own system BibSonomy, which allows for sharing both bookmarks d publication references in a kind of personal library. |
|||||
BibTeX:
@inproceedings{hotho2006bibsonomy,
author = {Hotho, Andreas and Jäschke, Robert and Schmitz, Christoph and Stumme, Gerd},
title = {BibSonomy: A Social Bookmark and Publication Sharing System},
booktitle = {Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures},
publisher = {Aalborg Universitetsforlag},
year = {2006},
pages = {87-102},
url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006bibsonomy.pdf}
}
|
|||||
| Hotho, A., Jäschke, R., Schmitz, C. & Stumme, G. | Das Entstehen von Semantik in BibSonomy | 2006 | Social Software in der Wertschöpfung | inproceedings | URL |
| Abstract: Immer mehr Soziale-Lesezeichen-Systeme entstehen im heutigen Web. In solchen Systemen erstellen die Nutzer leichtgewichtige begriffliche Strukturen, so genannte Folksonomies. Ihren Erfolg verdanken sie der Tatsache, dass man keine speziellen Fähigkeiten benötigt, um an der Gestaltung mitzuwirken. In diesem Artikel beschreiben wir unser System BibSonomy. Es erlaubt das Speichern, Verwalten und Austauschen sowohl von Lesezeichen (Bookmarks) als auch von Literaturreferenzen in Form von BibTeX-Einträgen. Die Entwicklung des verwendeten Vokabulars und der damit einhergehenden Entstehung einer gemeinsamen Semantik wird detailliert diskutiert. | |||||
BibTeX:
@inproceedings{hotho2006entstehen,
author = {Hotho, Andreas and Jäschke, Robert and Schmitz, Christoph and Stumme, Gerd},
title = {Das Entstehen von Semantik in BibSonomy},
booktitle = {Social Software in der Wertschöpfung},
publisher = {Nomos},
year = {2006},
url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006entstehen.pdf}
}
|
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| Hotho, A., Jäschke, R., Schmitz, C. & Stumme, G. | Emergent Semantics in BibSonomy | 2006 | Vol. P-94Informatik 2006 -- Informatik für Menschen. Band 2 |
inproceedings | URL |
| Abstract: Social bookmark tools are rapidly emerging on the Web. In such
stems users are setting up lightweight conceptual structures lled folksonomies. The reason for their immediate success is the ct that no specific skills are needed for participating. In this per we specify a formal model for folksonomies, briefly describe r own system BibSonomy, ich allows for sharing both bookmarks and blication references, d discuss first steps towards emergent semantics. |
|||||
BibTeX:
@inproceedings{hotho2006emergent,
author = {Hotho, Andreas and Jäschke, Robert and Schmitz, Christoph and Stumme, Gerd},
title = {Emergent Semantics in BibSonomy},
booktitle = {Informatik 2006 -- Informatik für Menschen. Band 2},
publisher = {Gesellschaft für Informatik},
year = {2006},
volume = {P-94},
note = {Proc. Workshop on Applications of Semantic Technologies, Informatik 2006},
url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006emergent.pdf}
}
|
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