Konstantinos Semertzidis, PhD

IBM Research Europe | Ireland


Konstantinos Semertzidis is a Research Engineer at IBM's Dublin Research Laboratory (DRL) since February 2019. Prior to joining DRL, he was working as an Application Developer at IBM Client Innovation Centre UK, on Inventory Linking Exports/ Re-arrivals project of HM Revenue and Customs.

Konstantinos holds a PhD from the Dept. of Computer Science & Engineering of the University of Ioannina in Greece. His research interests include Internet of Things (IoT), evolving graph data management, query processing, graph databases, and social network analysis. During his PhD studies he has worked as a Research Intern at IBM Research and Nokia Bell Labs. Before his PhD, he obtained his BSc degree in Computer Science from the University of Ioannnina in 2012, and his MSc in Computing from the University of York in 2013.

Email: Konstantinos.Semertzidis1@ibm.com

What's New

  • Nov 2021 Our Patent application titled Identifying relevant graph patterns in a knowledge graph background has been filed with the Patent Office in the US (App. 17/454909).

  • Oct 2021 Our submission titled Sentiment Polarization in Online Social Networks: The Flow of Hate Speech has been accepted to the full papers track of SNAMS 2021.

  • Nov 2020 Our Patent application titled Transportation Boarding Time Notification has been filed with the Patent Office in the US (App. 17/093975).

  • Oct 2020 Our submission titled A Hybrid Approach to Temporal Pattern Matching has been accepted to the short papers track of ASONAM 2020.


  • PhD: Dept. of Computer Science & Engineering, University of Ioannina, Greece (Oct. 2013 - July 2018)

  • MSc: Dept. of Computer Science, University of York, UK (Oct. 2012 - Sept. 2013)

  • BSc: Dept. of Computer Science, University of Ioannina, Greece (Oct. 2008 - Sept. 2012)

Professional Activities

  • PC Member: ACCIIDS 2018, WISE 2019, ICDE 2020.

  • Journal Reviews: Distributed and Parallel Databases 2018, IEEE Transactions on Knowledge and Data Engineering (TKDE) 2017, 2019, 2020.

  • External Reviewer: EDBT 2016, SDM 2017, ICDE 2017.