1. Twitter web site (2013),
http://twitter.com
2. Ahonen-Myka, H.: Mining all maximal frequent word sequences in a set of sentences. In: Proceedings of the 14th ACM International Conference on Information and Knowledge Management, CIKM 2005, pp. 255–256. ACM, New York (2005)
3. STUDFUZZ;T. Bruckhaus,2010
4. Buhmann, M.D.: Radial Basis Functions. Cambridge University Press, New York (2003)
5. Cortes, C., Vapnik, V.: Support-vector networks. Machine Learning 20, 273–297 (1995)