My primary research areas are data science, bioinformatics, combinatorics, and probability theory. - data mining algorithms for clustering, frequent pattern mining - mathematical modeling by data mining techniques: the web, its search and its usage, telecommunication and social networks - applying data mining and mathematical modeling for structural bioinformatics - integrating data mining functionalities into data warehouses - problems from discrete probability - random walks on discrete structures and symmetric structures (combinatorial and algebraic) - applications of the above to computer science and algorithms using random source