O. Reilly and T. , What Is Web 2.0? Design Patterns and Business Models for the Next Generation of Software, 2005.

T. Berners-lee and J. Hendler, The Semantic Web, Scientific American, vol.284, issue.5, pp.34-43, 2001.
DOI : 10.1038/scientificamerican0501-34

O. Etzioni, M. Banko, S. Soderland, and D. S. Weld, Open information extraction from the web, Communications of the ACM, vol.51, issue.12, pp.68-74, 2008.
DOI : 10.1145/1409360.1409378
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.143.8554

D. Fensel, C. Bussler, Y. Ding, V. Kartseva, M. Klein et al., Semantic web application areas, Proceedings of the 7th International Workshop on Applications of Natural Language to Information Systems (NLDB), 2002.

E. Brill, Processing Natural Language without Natural Language Processing, Proceedings of the 4th international conference on Computational linguistics and intelligent text processing, pp.360-369, 2003.
DOI : 10.1007/3-540-36456-0_37

A. Holzinger, M. D. Kickmeier-rust, and M. Ebner, Interactive technology for enhancing distributed learning: a study on weblogs, Proceedings of the 23rd British HCI Group Annual Conference on People and Computers: Celebrating People and Technology, pp.309-312, 2009.

A. Holzinger, On Knowledge Discovery and Interactive Intelligent Visualization of Biomedical Data -Challenges in Human-Computer Interaction & Biomedical Informatics, 2012.

A. Hotho, S. Staab, and G. Stumme, Wordnet improves Text Document Clustering, Proc. of the SIGIR 2003 Semantic Web Workshop, pp.541-544, 2003.

C. Cattuto, D. Benz, A. Hotho, and G. Stumme, Semantic Analysis of Tag Similarity Measures in Collaborative Tagging Systems, pp.18-26, 2008.

C. Cattuto, D. Benz, A. Hotho, and G. Stumme, Semantic Grounding of Tag Relatedness in Social Bookmarking Systems, Proceedings of the 7th International Conference on The Semantic Web, pp.615-631, 2008.
DOI : 10.1016/S0169-7552(98)00110-X

R. Hold, Twitter in numbers. The Telegraph, 2013.

F. Abel, Q. Gao, G. Houben, and K. Tao, Semantic Enrichment of Twitter Posts for User Profile Construction on the Social Web, 2011.
DOI : 10.1007/978-3-642-17746-0_30

J. Weng, E. Lim, J. Jiang, and Q. He, TwitterRank, Proceedings of the third ACM international conference on Web search and data mining, WSDM '10, pp.261-270, 2010.
DOI : 10.1145/1718487.1718520

S. Bhulai, P. Kampstra, L. Kooiman, G. Koole, M. Deurloo et al., Trend visualization in Twitter: what's hot and what's not? DATA ANALYTICS 2012, The First International Conference on Data Analytics, pp.43-48, 2012.

J. Pöschko, Exploring Twitter Hashtags. The Computing Research Repository (CoRR), 2011.

S. M. Kywe, T. Hoang, E. Lim, and F. Zhu, On Recommending Hashtags in Twitter Networks, Proceedings of the 4th international conference on Social Informatics, pp.337-350, 2012.
DOI : 10.1007/978-3-642-35386-4_25
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.452.2339

X. Wang, F. Wei, X. Liu, M. Zhou, and M. Zhang, Topic sentiment analysis in twitter, Proceedings of the 20th ACM international conference on Information and knowledge management, CIKM '11, pp.1031-1040, 2011.
DOI : 10.1145/2063576.2063726

S. Doan, L. Ohno-machado, and N. Collier, Enhancing Twitter Data Analysis with Simple Semantic Filtering: Example in Tracking Influenza-Like Illnesses, 2012 IEEE Second International Conference on Healthcare Informatics, Imaging and Systems Biology, pp.62-71, 2012.
DOI : 10.1109/HISB.2012.21
URL : http://arxiv.org/abs/1210.0848

M. G. Russell, J. Flora, M. Strohmaier, J. Poschko, and N. Rubens, Semantic Analysis of Energy-Related Conversations in Social Media: A Twitter Case Study, International Conference of Persuasive Technology, 2011.

G. A. Veltri, Microblogging and nanotweets: Nanotechnology on Twitter, Public Understanding of Science, vol.22, issue.7, 2012.
DOI : 10.1177/0963662512463510

Ö. Özdiki?, P. ?enkul, and H. Oguztüzün, Semantic expansion of hashtags for enhanced event detection in Twitter. The First International Workshop on, Online Social Systems (WOSS), 2012.

P. Teufl and S. Kraxberger, Extracting Semantic Knowledge from Twitter, Proceedings of the Third IFIP WG 8.5 international conference on Electronic participation, pp.48-59
DOI : 10.1007/978-3-642-23333-3_5

C. Fellbaum, ed: WordNet: An Electronic Lexical Database (Language, Speech, and Communication), 1998.

F. M. Suchanek, G. Kasneci, and G. Weikum, YAGO: A Large Ontology from Wikipedia and WordNet, Web Semantics: Science, Services and Agents on the World Wide Web, vol.6, issue.3, pp.203-217, 2008.
DOI : 10.1016/j.websem.2008.06.001
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.85.8206

Z. Wu and M. Palmer, Verbs semantics and lexical selection, Proceedings of the 32nd annual meeting on Association for Computational Linguistics -, pp.133-138, 1994.
DOI : 10.3115/981732.981751

S. Martínez, A. Valls, and D. Sánchez, Semantically-grounded construction of centroids for datasets with textual attributes. Knowledge-Based Systems, pp.160-172, 2012.

R. Rada, H. Mili, E. Bicknell, and M. Blettner, Development and application of a metric on semantic nets, IEEE Transactions on Systems, Man, and Cybernetics, vol.19, issue.1, pp.17-30, 1989.
DOI : 10.1109/21.24528

A. Budanitsky and G. Hirst, Evaluating WordNet-based Measures of Lexical Semantic Relatedness, Computational Linguistics, vol.17, issue.1, pp.13-47, 2006.
DOI : 10.1016/S0022-5371(79)90604-2
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.106.7617