Angelos MarkosAngelos Markos is a Professor of Data Analysis in the Social Sciences at the Democritus University of Thrace, School of Education (Greece), board member of the Greek Society of Data Analysis (GSDA) and additional member of the International Federatio of Classification Societies (IFCS) Council. In 2017, he was Visiting Scholar at the Department of Statistics, Stanford University. He hold a PhD degree from the University of Macedonia, Greece (2007). His areas of interest include multivariate analysis (especially dimension reduction and clustering), psychological testing and measurement in the social sciences and statistics education. I am creator and maintainer of the R packages clustrd and idm. Read More Read Less