knowledge · information · learning - Forschungszentrum L3S

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PUBLICATIONS
Publications 2008
1. Abel, Fabian. The Benefit of additional Semantics in Folksonomy
Systems. Proceedings of the 2nd Ph.D. Workshop in Seventeenth
ACM Conference on Information and Knowledge Management,
CIKM 2008, Napa, uSA, October 26-30, 2008.
2. Abel, Fabian; Bittencourt, Ig Ibert; Henze, Nicola; Krause,
Daniel; vassileva, julita. A Rule-Based Recommender System
for Online Discussion Forums. Proceedings of the Adaptive
Hypermedia and Adaptive Web-Based Systes (AH2008)
3. Abel, Fabian; Frank, Mischa; Henze, Nicola; Krause, Daniel;
Siehndel, Patrick. groupMe! – Combining Ideas of Wikis, Social
Bookmarking, and Blogging. International Conference on Weblogs
and Social Media (ICWSM 2008)
4. Abel, Fabian; Henze, Nicola; Krause, Daniel. Exploiting
additional Context for graph-based Tag Recommendations in
Folksonomy Systems. Proceedings of International Conference on
Web Intelligence (WI 2008), Sydney, Australia, Dec 2008
5. Abel, Fabian; Henze, Nicola; Krause, Daniel. Ranking in
Folksonomy Systems: Can context help?. Proceedings of the
Seventeenth ACM Conference on Information and Knowledge
Management, CIKM 2008, Napa, uSA, October 26-30, 2008
Folksonomy systems have shown to contribute to the quality of Web
search ranking strategies. In this paper, we analyze and compare
different graph-based ranking algorithms, namely FolkRank,
SocialPageRank, and SocialSimRank. We enhance these algorithms
by exploiting the context of tag assignmets, and evaluate the results
on the GroupMe! dataset. In GroupMe!, users can organize and
maintain arbitrary Web resources in self-defined groups. When users
annotate resources in GroupMe!, this can be interpreted in context
of a certain group. The grouping activity delivers valuable semantic
information about resources and their context. We show how to use
this information to improve the detection of relevant search results,
and compare different strategies for ranking result lists in folksonomy
systems.
6. Abel, Fabian; Henze, Nicola; Krause, Daniel; Kriesell, Matthias.
On the Effect of group Structures on Ranking Strategies in
Folksonomies. Proceedings of the 17th International World Wide
Web Conference (WWW 2008), Bejing, China
This paper presents the GroupMe! system, a resource sharing system
with advanced tagging functionality. GroupMe! provides a novel
user interface, which enables users to organize and arrange arbitrary
Web resources into groups. The content of such groups can be
overlooked and inspected immediately as resources are visualized in
a multimedia-based fashion. In this paper, we furthermore introduce
new folksonomy-based ranking strategies that exploit the group
structure shipped with GroupMe! folksonomies. Experiments show
that those strategies significantly improve the performance of such
ranking algorithms.
7. Abel, Fabian; Henze, Nicola; Krause, Daniel; Plappert, Daniel.
user Modeling and user Profile Exchange for Semantic Web
Applications. 16th Workshop on Adaptivity and user Modeling in
Interactive Systems (ABIS2008)
8. Alferes, josé júlio; Amador, Ricardo; Kärger, Philipp; Olmedilla,
Daniel. Towards Reactive Semantic Web Policies: Advanced
Agent Control for the Semantic Web. Proceedings of the 7th
International Semantic Web Conference, ISWC 2008, Karlsruhe,
germany, October 26-30, 2008 (Poster and Demo Session)
9. Alrifai, Mohammad. Distributed and Scalable QoS Optimization
for Dynamic Web Service Composition. PhD Symposium at the
International Conference on Service Oriented Computing, Sydney,
December 2008
10. Alrifai, Mohammad; Risse, Thomas. Efficient QoS-aware Web
Service Composition. 3rd Workshop on Emerging Web Services
Technology, at the European Conference on Web Services
(ECOWS’08), Dublin, November 2008
FORSCHUNGSZENTRUM L3S L3S RESEARCH CENTER
11. Alrifai, Mohammad; Risse, Thomas; Dolog, Peter; Nejdl,
Wolfgang. A Scalable Approach for QoS-based Web Service
Selection. 1st International Workshop on Quality-of-Service
Concerns in Service Oriented Architectures (QoSCSOA’08) in
conjunction with ICSOC 2008, Sydney, December 2008
12. Assche, Frans van; Bruggen, jan van; Ceri, Stefano; Nejdl,
Wolfgang. Proceedings of the 1st International Workshop on
Collaborative Open Environments for Project-Centered Learning,
COOPER-2007, Sissi, Lassithi – Crete greece, 17 September, 2007.
13. Bähr, Thomas; Denecke, Kerstin. LINSearch – Linguistisches
Indexieren und Suchen Chancen und Risiken im grenzbereich
zwischen intellektueller Erschließung und automatisch gesteuerter
Klassifikation. verfügbarkeit von Informationen. 30.Online-Tagung
der DgI
14. Bali, Samer ; Steuer, jan; jobmann, Klaus. Capacity of Ad
Hoc Networks with Line Topology Based on uWB and WLAN
Technologies. Wireless Telecommunications Symposium (WTS)
2008, April 24 - 26, 2008.
15. Bali, Samer; Steuer, jan; jobmann, Klaus. Routing Protocols
for ultra-Wideband Mobile Ad-Hoc Networks. IEEE Sarnoff
Symposium 2008, April 28 - 30, 2008.
16. Balke, Wolf-Tilo. Skyline Queries for Preference-Based
Information Systems.. Proceedings of the 20. gI-Workshop on
Foundations of Databases (grundlagen von Datenbanken),
Apolda, Thüringen, germany, May 13-16, 2008, pp. 3, 2008,
School of Information Technology, International university in
germany.
17. Balke, Wolf-Tilo; Lofi, Christoph; güntzer, ulrich. Consistency
Check Algorithms for Multi-Dimensional Preference Trade-Offs.
International journal of Computer Science & Applications (IjCSA),
vol. 5(3b)
18. Balke, Wolf-Tilo; Selke, joachim. Exploiting Conceptual
Knowledge for Querying Information Systems. Proceedings of
the Conference on Philosophy’s Relevance in Information Science
(PRIS 2008), 2008.
19. Bischoff, Kerstin; Firan, Claudiu-S; Nejdl, Wolfgang; Paiu,
Raluca. Can All Tags Be used for Search?. Proceedings of the
Seventeenth ACM Conference on Information and Knowledge
Management, CIKM 2008, Napa, uSA, October 26-30, 2008
Collaborative tagging has become an increasingly popular means for
sharing and organizing Web resources, leading to a huge amount of
user generated metadata. These tags represent quite a few different
aspects of the resources they describe and it is not obvious whether
and how these tags or subsets of them can be used for search. This
paper is the first to present an in-depth study of tagging behavior for
very different kinds of resources and systems ? Web pages (Del.icio.
us), music (Last.fm), and images (Flickr) ? and compares the results
with anchor text characteristics. We analyze and classify sample tags
from these systems, to get an insight into what kinds of tags are used
for different resources, and provide statistics on tag distributions in
all three tagging environments. Since even relevant tags may not
add new information to the search procedure, we also check overlap
of tags with content, with metadata assigned by experts and from
other sources. We discuss the potential of different kinds of tags for
improving search, comparing them with user queries posted to search
engines as well as through a user survey. The results are promising
and provide more insight into both the use of different kinds of tags
for improving search and possible extensions of tagging systems to
support the creation of potentially search-relevant tags.
20. Bonatti, Piero A.; De Coi, juri Luca; Olmedilla, Daniel; Sauro,
Luigi. A framework for semantic web policies. Proceedings of
the 7th International Semantic Web Conference, ISWC 2008,
Karlsruhe, germany, October 26-30, 2008
Bonatti, Piero A.; De Coi, juri Luca; Olmedilla, Daniel; Sauro,
21.
Luigi. Policy-Driven Negotiations and Explanations: Exploiting
Logic-Programming for Trust Management, Privacy & Security. 24th
International Conference on Logic Programming (ICLP 2008)