My name is Kostas Stefanidis and I am an Associate Professor at the Faculty of Natural Sciences of the University of Tampere, Finland.
Prior to that, I was a research scientist with the Information Systems Lab of ICS-FORTH, Greece, and a postdoctoral researcher at the IDI Dept. of NTNU in Norway and the CSE Dept. of CUHK in Hong Kong. I got my PhD in personalized data management from the Univ. of Ioannina, Greece.
My research interests are in the broader area of big data. They lie in the intersection of databases, information retrieval, data mining and the Web, and include personalization and recommender systems, large-scale entity resolution and information integration, and query and data exploration paradigms, including keyword search and opinion mining techniques.
I have been involved in several international research projects and co-authored more than 60 papers in peer-reviewed conferences and journals, including ACM SIGMOD, IEEE ICDE and ACM TODS. I am also actively serving the scientific community. Currently, I am a Steering Committee Member for the Workshop on Exploratory Search in Databases and the Web (ExploreDB), in conjunction with ACM SIGMOD. I served also as the Web & Information Chair of SIGMOD/PODS 2016 and the Proceedings Chair of EDBT/ICDT 2016.

E-mail: Kostas.Stefanidis -at- uta.fi




V. Christophides, V. Efthymiou, and K. Stefanidis. Entity Resolution in the Web of Data. Synthesis Lectures on The Semantic Web: Theory and Technology, Morgan and Claypool, August 2015.


V. Efthymiou, G. Papadakis, G. Papastefanatos, K. Stefanidis and T. Palpanas. Parallel Meta-blocking for Scaling Entity Resolution over Big Heterogeneous Data. Elsevier Information Systems.

V. Efthymiou, K. Stefanidis and V. Christophides. Benchmarking Blocking Algorithms for Web Entities. IEEE Transactions on Big Data.


P. Fafalios, V. Iosifidis, K. Stefanidis and E. Ntoutsi. Multi-aspect Entity-centric Analysis of Big Social Media Archives. Proceedings of TPDL 2017. [Local copy]

Y. Roussakis, I. Chrysakis, K. Stefanidis, G. Flouris and Y. Stavrakas. A Flexible Framework for Understanding the Dynamics of Evolving RDF Datasets. Proceedings of ISWC 2015. [Local copy]
best student paper award

Professional Activities

SWH 2018: International Workshop on Semantic Web Technologies for Health Data Management, co-located with ISWC, Monterey, California, USA, October 9, 2018. [General co-Chair]
ExploreDB 2018: International Workshop on Exploratory Search in Databases and the Web, co-located with SIGMOD/PODS, Houston, TX, USA, June 15, 2018. [General co-Chair]
SIGMOD/PODS 2016: ACM International Conference on Management of Data, San Francisco, USA, June 26 - July 1, 2016. [Web/Information Chair]
EDBT/ICDT 2016: International Conference on Extending Database Technology, Bordeaux, France, 2016. [Proceedings Chair]

Contact Information

Kostas Stefanidis (official name: Konstantinos Stefanidis)
Associate Professor

Faculty of Natural Sciences (LUO)
FI-33014 University of Tampere, Finland

Room: PINNI B2052

E-mail: Kostas.Stefanidis -at- uta.fi