C. Chang, M. Kayed, M. R. Girgis, and K. F. Shaalan, A survey of web information extraction systems, IEEE Trans. Knowl. Data Eng, vol.18, issue.10, pp.1411-1428, 2006.

E. Codd, S. Codd, and C. Salley, Providing olap (on-line analytical processing) to useranalysts : An it mandate, 1993.

T. Hofmann, Probabilistic latent semantic analysis, Proc. of Uncertainty in Artificial Intelligence, UAI'99, pp.289-296, 1999.

A. K. Jain, M. N. Murty, and P. J. Flynn, Data clustering : A review, ACM Comput. Surv, vol.31, issue.3, pp.264-323, 1999.

S. Keith, O. Kaser, and D. Lemire, Analyzing large collections of electronic text using olap, UNBSJ CSAS, 2005.

C. X. Lin, B. Ding, J. Han, F. Zhu, and B. Zhao, Text Cube : Computing IR Measures for Multidimensional Text Database Analysis, Proc. of Int. Conf. on Data Mining (ICDM'08), pp.905-910, 2008.

J. M. Pérez-martínez, R. B. Llavori, M. J. Cabo, and T. B. Pedersen, Contextualizing data warehouses with documents, Decision Support Systems, vol.45, issue.1, pp.77-94, 2008.

G. Pujolle, F. Ravat, O. Teste, and R. Tournier, Fonctions d'agrégation pour l'analyse en ligne (olap) de données textuelles. fonctions top_kwk et avg_kw opérant sur des termes, Ingénierie des Systèmes d'Information, vol.13, issue.6, pp.61-84, 2008.
DOI : 10.3166/isi.13.6.61-84

G. Sacco, Dynamic taxonomies : A model for large information bases, IEEE Transactions on Knowledge and Data Engineering, vol.12, issue.3, pp.468-479, 2000.
DOI : 10.1109/69.846296

R. Saga, H. Tsuji, and K. Tabata, Loopo : Integrated text miner for fact-graph-based trend analysis, HCI, pp.192-200, 2009.
DOI : 10.1007/978-3-642-02559-4_22

G. Salton, A. Wong, and C. S. Yang, A vector space model for automatic indexing, Commun. ACM, vol.18, issue.11, pp.613-620, 1975.

F. Sebastiani, Machine learning in automated text categorization, ACM Comput. Surv, vol.34, issue.1, pp.1-47, 2002.

D. Zhang, C. Zhai, and J. Han, Topic cube : Topic modeling for olap on multidimensional text databases, Proc. of the SIAM Int. Conference on Data Mining, pp.1123-1134, 2009.