Thanasis Georgiadis

PhD Student

Department of Computer Science and Engineering
University of Ioannina, Greece

Email: ageorgiadis (at)

Download CV (updated May 2024)


I received my integrated MsC diploma from the Department of Computer Science & Engineering, University of Ioannina, Greece in 6 years. For my thesis titled "Development of a Big Spatial Data Management System", I designed and implemented a prototype distributed and parallel data management system using MPIm that answers spatial range queries on polygons. The worker nodes work indepenendently with each other while also performing their tasks parallely, using OpenMP. I am currently a PhD candidate in the Department of Computer Science and Engineering, University of Ioannina, supervised by Prof. Nikos Mamoulis.

Research Interests

My research interests include spatial data management, distributed systems and query optimization. The data is getting bigger and bigger every day, so scalability in systems is vital. When designing an algorithm for query processing, it is essential to at least consider how it would perform in large scale cloud or distributed systems. On the same note, multi-core and multithreaded processors and powerful GPUs are available at retail price, meaning that parallelization is in our hands now.


  • Scalable Detection of Topological Relations
    Thanasis Georgiadis, Eleni Tzirita Zacharatou, Nikos Mamoulis
    under submission
  • Raster Interval Object Approximations for Spatial Intersection Joins [PDF]
    Thanasis Georgiadis, Eleni Tzirita Zacharatou, Nikos Mamoulis
    under submission, currently on
  • Raster Intervals: An Approximation Technique for Polygon Intersection Joins [PDF]
    Thanasis Georgiadis, Nikos Mamoulis
    ACM SIGMOD 2023
  • Scalable Query Processing on Big Spatial Data [PDF]
    Thanasis Georgiadis
    EDBT/ICDT Joint Conference 2023 (PhD workshop paper)


  • September 2023 - February 2024
    Research Intern at Huawei Technologies Research & Development (UK) Ltd, Edinburgh, Scotland.

Other Activities

  • Participated in the 4th ACM Europe Summer School on Data Science, July 2023, Athens, Greece.
  • Volunteered at the EDBT/ICDT 2023 Joint Conference, March 2023, Ioannina, Greece.

Music: Sewn Mouth | Rammen