Daniel Lemire is especially interested in Data Mining, very large databases (OLAP) as well as in collaborative filtering. en Significant publications by Daniel Lemire, researcher and professor at UQAM http://www.daniel-lemire.com/en/publications.html Web 2.0 OLAP: From Data Cubes to Tag Clouds, Lecture Notes in Business Information Processing Vol. 18, pages 51-64, 2009. (<!--a href="http://arxiv.org/abs/0905.2657"-->arXiv:0905.2657<!--/a-->)