Prof. Tsamardinos visited Athens during 24-25 of November and gave two invited talks about his scientific work.  The first one was held on the 24^th of November, about: “Advances in Feature Selection in Data Analytics”, at the  Department of  Digital Systems  of University of Piraeus and the second  one on  the 25^th of November about:” Logic-Based Causal Discovery for Heterogeneous Datasets”, which was held in the Department of Informatics and Telecommunications, National and Kapodistrian University of Athens.