Yannis Plegas is a graduate engineer in the Department of Computer Engineering and Informatics at University of Patras in Greece. He continued his studies in the same Department and obtained his MSc in “Computer Science and Engineering”. Also he expanded his MSc in PhD studies. He obtained his PhD in the year 2013, with dissertation title “Algorithms and Techniques of Personalized Search in Internet Environments using Underlying Semantics”. He has scientific work published in journals and conferences. His research interests include Searching, Search Engine Optimization, Lexical and Structural Semantics, Semantic Web, XML, Web Algorithms, Data Mining, Internet Technologies and Information Retrieval.