Online photo services such as Flickr and Zooomr allow users
to share their photos with family, friends, and the online
community at large. An important facet of these services
is that users manually annotate their photos using so called
tags, which describe the contents of the photo or provide
additional contextual and semantical information. In this
paper we investigate how we can assist users in the tagging
phase. The contribution of our research is twofold. We
analyse a representative snapshot of Flickr and present the
results by means of a tag characterisation focussing on how
users tags photos and what information is contained in the
tagging. Based on this analysis, we present and evaluate tag
recommendation strategies to support the user in the photo
annotation task by recommending a set of tags that can be
added to the photo. The results of the empirical evaluation
show that we can effectively recommend relevant tags for a
variety of photos with different levels of exhaustiveness of
original tagging.
mendation service which can be called via HTTP by BibSonomy's recommender when a user posts a bookmark or publication. All participating recommenders are called on each posting process, one of them is choosen to actually deliver the results to the user. We can then measure
R. Krestel, P. Fankhauser, and W. Nejdl. RecSys '09: Proceedings of the third ACM conference on Recommender systems, page 61--68. New York, NY, USA, ACM, (2009)
Y. Song, L. Zhang, and C. Giles. CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge management, page 93--102. New York, NY, USA, ACM, (2008)
S. Rendle, L. Marinho, A. Nanopoulos, and L. Schmidt-Thieme. KDD '09: Proceedings of the 15th ACM SIGKDD international conference on Knowledge discovery and data mining, page 727--736. New York, NY, USA, ACM, (2009)
B. Sigurbjörnsson, and R. van Zwol. WWW '08: Proceeding of the 17th international conference on World Wide Web, page 327--336. New York, NY, USA, ACM, (2008)
P. Symeonidis, A. Nanopoulos, and Y. Manolopoulos. RecSys '08: Proceedings of the 2008 ACM conference on Recommender systems, page 43--50. New York, NY, USA, ACM, (2008)
P. Symeonidis, A. Nanopoulos, and Y. Manolopoulos. RecSys '08: Proceedings of the 2008 ACM conference on Recommender systems, page 43--50. New York, NY, USA, ACM, (2008)
M. Tatu, M. Srikanth, and T. D'Silva. Proceedings of the ECML/PKDD 2008 Discovery Challenge Workshop, part of the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases, page 96--107. (2008)
S. Ju, and K. Hwang. Proceedings of the ECML/PKDD 2009 Discovery Challenge Workshop, part of the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases, (2009)
R. Abbasi, M. Grzegorzek, and S. Staab. Semantic Multimedia, volume 5887 of Lecture Notes in Computer Science, page 65--76. Springer Berlin / Heidelberg, (2009)
Y. Chuan, X. Jieping, and D. Xiaoyong. ICEC '06: Proceedings of the 8th international conference on Electronic commerce, page 574--578. New York, NY, USA, ACM Press, (2006)