Core team

Charalampos Bratsas


Dr Charalampos Bratsas is the founder of Open Knowledge Foundation Greece and CEO. He is working as researcher and teaching academic staff at the Department of Mathematics, in Aristotle University of Thessaloniki (AUTH) and participates as researcher in Medical Physics Laboratory of AUTH. Main research areas are Open Data (creator of Greek Open Data Hub), Semantic Web, Social Semantic Web, Linked Data (Greek DBpedia Coordinator), Data Mining, Big Data and AI applications. He is also post-doctoral scientific associate at Complex System Analysis Laboratory of AUTH. He holds a bachelor degree in Maths (1999), master degree in Medical Informatics and PhD in Informatics in Medical Education (2008). He has participated in many European Committee research programs. He has more than 60 articles in the fields of Semantic Web, Big Data, Artificial Intelligence and Data Analysis published in scientific Journals and conference proceedings.




Kleanthis Koupidis

Data Scientist

Kleanthis Koupidis graduated from the Mathematics Department of the Aristotle University of Thessaloniki and received his M.Sc. in Web Science from the same Department.

He works as Data Scientist in research projects with Open Knowledge Greece. He recently worked in OpenBudgets Horizon 2020 project using data mining techniques in fiscal open data. Through Open Knowledge Greece he participated actively to the conformation of the Third Greek Open Government Partnership Action Plan and worked to complete the commitments of the Foundation. Also, he is co-author of Greek Cities Open Data Census and Data Journalism Handbook (Greek edition).

His research interests include Dynamical Systems, Data Mining Algorithms, Machine/Statistical Learning, Big Data, Graph theory, Linked Open Data, Time Series, Signal, EEG and Social Network Analysis. In 2015 he presented his M.Sc. thesis with title "Emotion Recognition and Classification using Neural Networks" at the 7th International Mathematical Week and in 2017 at the 9th International Mathematical Week, the Red Flags application of Open Knowledge Greece that was part of the Foundation’s commitments for Open Government Partnership.

He is a singer, composer, lyrics writer, guitar and harmonica player. He played in various music scenes and bars in Thessaloniki. In 2013 he published his first complete work, while recently he composes music for cinema and games.


Panagiotis-Marios Filippidis

Developer/Data Analyst

Notis Filippidis is a PhD candidate in the Journalism and Mass Media Department of the Aristotle University of Thessaloniki, aiming to create and implement semantic web services in sports journalism. He is a graduate of the Department of Informatics of the Aristotle University of Thessaloniki, and holds a postgraduate degree in Web Science from the Department of Mathematics of the Aristotle University of Thessaloniki. He is an active member of the Open Knowledge Foundation of Greece and he is mainly involved in the development of applications and the creation and analysis of semantic data.


Evangelos Chondrokostas

Developer/Data Analyst

Evangelos (Vagelis) Chondrokostas obtained his B.Sc. in Mathematics, and, subsequently, his M.Sc. in Complex Systems and Networks, at the Aristotle University of Thessaloniki, in 2014 and 2016, respectively. For his Master Thesis, he has created the VFP-ontology, to semantically describe the projects of the Greek NSFR.

He’s an active member of Open Knowledge Greece since June 2015 and, as a Data Scientist, he has participated in the development of various apps. He’s also worked as a Short Term Consultant for the World Bank.

His research interests include Network Theory with applications mainly on biological networks, data visualization, Linked data, the development of ontologies and their application in the Semantic web.




Anastasia Papadopoulou

Community Assistant

Anastasia Papadopoulou holds a bachelor’s degree in Mathematics and a master’s degree in Web Science both from the Aristotle University of Thessaloniki. Her master’s thesis focused on Key Performance Indicators (KPIs) analysis and statistical analysis of semantically described data regarding local government budgets at the EU-funded project «». She currently attends a master’s programme in Governance and Regional Development from the School of Political and Economic Sciences, Aristotle University of Thessaloniki. Her main area of research includes statistical analysis of financial data and election results. She has been a research associate at SEPVE’s (Association of Information Technology Companies of Northern Greece) project entitled «Innovative Open Data Education and Training based on Problem Based Learning (PBL) and Learning Analytics (LA)» and she has also worked as a project manager in business sector, planning and managing the overall coordination of various projects. She has been a Community Manager for Open Knowledge Foundation Greece since 2014, providing support in development and training programs. She is currently working as a research associate and project manager on research projects of the organization.

Myrto Papageorgiou

Community Assistant

Myrto Papageorgiou is a research associate of the Aristotle University of Thessaloniki and a PhD candidate in the Department of Mathematics of the School of Sciences of the Aristotle University of Thessaloniki in the field of Statistics and Business Research. In her doctoral dissertation she deals with the statistical analysis of real networks and her research interests include network theory, collection, processing and statistical data analysis. He is a graduate of the Department of Mathematics and has a master's degree in Internet Science (Web of Science) from the Department of Mathematics, AUTh. He has also been involved in data processing and analysis in recent years. He is an active member of the Open Knowledge Foundation of Greece and a member of the Council of the Hellenic Mathematical Society - Branch of Central Macedonia and a member of the organizing committee of the Mathematical Week that organizes the branch every year.

Maria S. Schοina

Project Manager

She is a graduate of the Department of Civil Engineering of Aristotle University of Thessaloniki. After graduation she was involved in several structural design studies as self-employed or in cooperation with a design and construction firm. Since 2000 she has been working for the Urenio Research Unit of the Aristotle University of Thessaloniki, participating in the implementation and the management of European and National research projects in the fields of Regional Development, Innovation, Management of Technology, Business Intelligence, Smart Cities and Intelligent Transport Systems. Since 2013 she is a member of the Open Knowledge foundation charter in Greece, participating in a series of activities. She has been one of the core contributors of the “2014 Open Data Census report for the Greek Cities” report conducted by OKF Greece.


More information