[19 A Hotho, R. Jaschke, C Schmitz, and G Stumme 25 G. Mishne. Autotag: a collaborative approach to Information retrieval in folksonomies: Search and automated tag assignment for weblog posts In www ranking In Y. Sure and J. Domingue, editors, The 06: Proceedings of the 15th international conference Semantic Web: Research and Applications, volume on World Wide Web, pages 953-954, New York, NY 4011 of Lecture Notes in Computer Science, pages USA. 2006. ACM 411-426, Heidelberg, germany, June 2006. Springer 26 R. Schenkel, T. Crecelius, M. Kacimi, S. Michel, 20R. Jaschke, L. B Marinho, A Hotho, T. Neumann, J. X. Parreira, and G. Weikum. Efficient L. Schmidt-Thieme, and G Stumme Tag top-k querying over social-tagging networks. In SIGIR recommendations in folksonomies. In J.n. Kok 08: Proceedings of the 31st annual international ACM J. Koronacki, R. L de Mantaras, S. Matwin SIGIR conference on Research and development in D. Mladenic, and A. Skowron, editors, Knowledge information retrieval, pages 523-530, New York, NY Discovery in Databases: PKDD 2007, 1 1th european USA 2008. ACM. Conference on Principles and Practice of Knowledge 27 A. Shepitsen, J Gemmell, B Mobasher, and R. D iscovery in Databases, Warsaw, Poland, September Burke. Personalized recommendation in social tagging 17-21, 2007, Proceedings, volume 4702 of Lecture ystems using hierarchical clustering In P. Pu, D. G Notes in Computer Science, pages 506-514 Bridge, B. Mobasher, and F. Ricci, editors, Heidelberg, Germany, 2007. Springer Proceedings of the 2008 ACM Conference on 1 R. Krestel and L Chen. The art of tagging Recommender Systems, Rec Sys 2008, Lausanne, Measuring the quality of tags. In J. Domingue and Switzerland, October 23-25, 2008, pages 259-266, New C. Anutariva. editors. The Semantic Web. 3rd Asian Y, USA, 2008. A Semantic Web Conference, ASWC 2008, Bangkok, 28 B. Sigurbjornsson and R. van Zwol Flickr tag Thailand, December 8-11, 2008. Proceedings, volume recommendation based on collective knowledge. In 5367 of Lecture Notes in Computer Science, pages www 08: Proceeding of the 17th international 257-271, Heidelberg, Germany, 2008. Springer conference on World wide Web, pages 327-336, New 22 C D. Manning, P. Raghavan, and H Scht York, NY, USA, 2008. ACM Introduction to Information Retrieval. Cambridge 29Y. Song, Z Zhuang, H. Li, Q. Zhao, J. Li, W.-CLee University Press, Cambridge, UK, July 2008 and C. L. Giles. Real-time automatic tag 23 C Marlow, M. Naaman, D. Boyd, and M. Davis recommendation. In SIGIR 08: Proceedings of the Ht06, tagging paper, taxonomy, flickr, academic 31st annual international ACM SIGIR comference on article, to read. In U. K. wiil, P J. Nurnberg, and Research and development in information retrieval J. Rubart, editors, HYPERTEXT 2006, Proceedings of pages 515-522, New York, NY, USA, 2008. ACM the 17th ACM Conference on Hypertext and 30 P Symeonidis, A Nanopoulos, and Y. Manolopoulos Hypermedia, August 22-25, 2006, Odense, Denmark, Tag recommendations based on tensor dimensionality pages 31-40, New York, NY, USA, 2006. ACM. reduction. In RecSys 08: Proceedings of the 2008 4 I Mierswa, M. Wurst, R Klinkenberg, M. Scholz, and ACM conference on Recommender systems, pages mining tasks In L. Ungar, McS for complex data T. Euler. Yale: Rapid proto 43-50. New York. NY. USA. 2008. ACM aven, D. Gunopulo 31Z. Xu, Y. Fu, J. Mao, and D Su. Towards the and T. Eliassi-Rad, editors, KDD 06: Proceedings of semantic web: Collaborative tag suggestions. In the 12th ACM SIGKDD international conference on Proceedings of Collaborative Web Tagging Workshop at Knowledge discovery and data mining, pages 935-940 15th International World wide Web Conference, 2006 New York, NY, USA, August 2006. ACM[19] A. Hotho, R. J¨aschke, C. Schmitz, and G. Stumme. Information retrieval in folksonomies: Search and ranking. In Y. Sure and J. Domingue, editors, The Semantic Web: Research and Applications, volume 4011 of Lecture Notes in Computer Science, pages 411–426, Heidelberg, Germany, June 2006. Springer. [20] R. J¨aschke, L. B. Marinho, A. Hotho, L. Schmidt-Thieme, and G. Stumme. Tag recommendations in folksonomies. In J. N. Kok, J. Koronacki, R. L. de M´antaras, S. Matwin, D. Mladenic, and A. Skowron, editors, Knowledge Discovery in Databases: PKDD 2007, 11th European Conference on Principles and Practice of Knowledge Discovery in Databases, Warsaw, Poland, September 17-21, 2007, Proceedings, volume 4702 of Lecture Notes in Computer Science, pages 506–514, Heidelberg, Germany, 2007. Springer. [21] R. Krestel and L. Chen. The art of tagging: Measuring the quality of tags. In J. Domingue and C. Anutariya, editors, The Semantic Web, 3rd Asian Semantic Web Conference, ASWC 2008, Bangkok, Thailand, December 8-11, 2008. Proceedings, volume 5367 of Lecture Notes in Computer Science, pages 257–271, Heidelberg, Germany, 2008. Springer. [22] C. D. Manning, P. Raghavan, and H. Schutze. ¨ Introduction to Information Retrieval. Cambridge University Press, Cambridge, UK, July 2008. [23] C. Marlow, M. Naaman, D. Boyd, and M. Davis. Ht06, tagging paper, taxonomy, flickr, academic article, to read. In U. K. Wiil, P. J. Nurnberg, and ¨ J. Rubart, editors, HYPERTEXT 2006, Proceedings of the 17th ACM Conference on Hypertext and Hypermedia, August 22-25, 2006, Odense, Denmark, pages 31–40, New York, NY, USA, 2006. ACM. [24] I. Mierswa, M. Wurst, R. Klinkenberg, M. Scholz, and T. Euler. Yale: Rapid prototyping for complex data mining tasks. In L. Ungar, M. Craven, D. Gunopulos, and T. Eliassi-Rad, editors, KDD ’06: Proceedings of the 12th ACM SIGKDD international conference on Knowledge discovery and data mining, pages 935–940, New York, NY, USA, August 2006. ACM. [25] G. Mishne. Autotag: a collaborative approach to automated tag assignment for weblog posts. In WWW ’06: Proceedings of the 15th international conference on World Wide Web, pages 953–954, New York, NY, USA, 2006. ACM. [26] R. Schenkel, T. Crecelius, M. Kacimi, S. Michel, T. Neumann, J. X. Parreira, and G. Weikum. Efficient top-k querying over social-tagging networks. In SIGIR ’08: Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, pages 523–530, New York, NY, USA, 2008. ACM. [27] A. Shepitsen, J. Gemmell, B. Mobasher, and R. D. Burke. Personalized recommendation in social tagging systems using hierarchical clustering. In P. Pu, D. G. Bridge, B. Mobasher, and F. Ricci, editors, Proceedings of the 2008 ACM Conference on Recommender Systems, RecSys 2008, Lausanne, Switzerland, October 23-25, 2008, pages 259–266, New York, NY, USA, 2008. ACM. [28] B. Sigurbj¨ornsson and R. van Zwol. Flickr tag recommendation based on collective knowledge. In WWW ’08: Proceeding of the 17th international conference on World Wide Web, pages 327–336, New York, NY, USA, 2008. ACM. [29] Y. Song, Z. Zhuang, H. Li, Q. Zhao, J. Li, W.-C. Lee, and C. L. Giles. Real-time automatic tag recommendation. In SIGIR ’08: Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, pages 515–522, New York, NY, USA, 2008. ACM. [30] P. Symeonidis, A. Nanopoulos, and Y. Manolopoulos. Tag recommendations based on tensor dimensionality reduction. In RecSys ’08: Proceedings of the 2008 ACM conference on Recommender systems, pages 43–50, New York, NY, USA, 2008. ACM. [31] Z. Xu, Y. Fu, J. Mao, and D. Su. Towards the semantic web: Collaborative tag suggestions. In Proceedings of Collaborative Web Tagging Workshop at 15th International World Wide Web Conference, 2006