![](bg8.png)
systems as it solves the problem of ambiguous as well
as synonymous tags. The new tagging facets give
the users new means to navigate through images and
further allow for advanced search and ranking algo-
rithms.
In our future work we will examine whether it is
possible to learn more fine-grained relations by con-
necting the semantic tags and categories in TagMe!
with external domain ontologies. For example, if two
objects within the same image are tagged with person
or friend (spatial tagging) one could assume that there
is a foaf:knows relation between both persons. Fur-
ther, we will analyze the impact of spatial tagging on
search and try to answer whether the size of a tagged
area matter or whether the proximity of the tagged
area is relevant to the midpoint of the picture. To ex-
plore these research questions on larger data sets, we
would like to integrate the TagMe! tagging features
into an other photo sharing platforms such as Arsme-
teo (http://www.arsmeteo.org).
REFERENCES
Abel, F., Kawase, R., Krause, D., and Siehndel, P. (2009).
Multi-faceted Tagging in TagMe! In 8th International
Semantic Web Conference (ISWC2009).
Auer, S., Bizer, C., Kobilarov, G., Lehmann, J., Cyga-
niak, R., and Ives, Z. (2007). DBpedia: A Nucleus
for a Web of Open Data. In et al., A., editor, The
Semantic Web, 6th International Semantic Web Con-
ference (ISWC), 2nd Asian Semantic Web Conference
(ASWC), pages 715–728.
Berners-Lee, T. (2007). Linked Data - design issues. Tech-
nical report, W3C. http://www.w3.org/DesignIssues/
LinkedData.html.
Bizer, C., Lehmann, J., Kobilarov, G., Auer, S., Becker, C.,
Cyganiak, R., and Hellmann, S. (2009). Dbpedia - a
crystallization point for the web of data. Web Seman-
tics: Science, Services and Agents on the World Wide
Web.
Halpin, H., Robu, V., and Shepherd, H. (2007). The Com-
plex Dynamics of Collaborative Tagging. In Proc. of
16th Int. World Wide Web Conference (WWW ’07),
pages 211–220, New York, NY, USA. ACM Press.
Hotho, A., J
¨
aschke, R., Schmitz, C., and Stumme, G.
(2006). BibSonomy: A Social Bookmark and Pub-
lication Sharing System. In Proc. First Conceptual
Structures Tool Interoperability Workshop, pages 87–
102, Aalborg.
Marchetti, A., Tesconi, M., Ronzano, F., Rosella, M., and
Minutoli, S. (2007). SemKey: A Semantic Collab-
orative Tagging System. In Workshop on Tagging
and Metadata for Social Information Organization at
WWW ’07, May 8-12, 2007, Banff, Canada.
Marlow, C., Naaman, M., Boyd, D., and Davis, M. (2006).
HT06, tagging paper, taxonomy, flickr, academic arti-
cle, to read. In Proc. of the 17th Conf. on Hypertext
and Hypermedia, pages 31–40. ACM Press.
Vander Wal, T. (2005). Explaining and show-
ing broad and narrow folksonomies.
http://www.personalinfocloud.com/2005/02/
explain ing and .html.
Mika, P. (2005). Ontologies Are Us: A unified model of
social networks and semantics. In Proc. Int. Semantic
Web Conference (ISWC 2005), pages 522–536.
Milicic, V. (2008). Case study: Semantic tags. W3C
Semantic Web Case Studies and Use Cases.
http://www.w3.org/2001/sw/sweo/public/UseCases/
Faviki/.
Passant, A. and Laublet, P. (2008). Meaning Of A
Tag: A collaborative approach to bridge the gap be-
tween tagging and Linked Data. In Proceedings of
the WWW 2008 Workshop Linked Data on the Web
(LDOW2008), Beijing, China.
Russell, B. C., Torralba, A. B., Murphy, K. P., and Freeman,
W. T. (2008). LabelMe: A Database and Web-based
tool for Image Annotation. International Journal of
Computer Vision, 77(1-3):157–173.
Sigurbj
¨
ornsson, B. and van Zwol, R. (2008). Flickr tag rec-
ommendation based on collective knowledge. In Proc.
of 17th Int. World Wide Web Conference (WWW ’08),
pages 327–336. ACM Press.
Tonkin, E. (2006). Searching the long tail: Hidden struc-
ture in social tagging. Proceedings of the 17th SIG
Classification Research Workshop.
WEBIST 2010 - 6th International Conference on Web Information Systems and Technologies
28