Logo TU Ilmenau


Prof. Dr. Kai-Uwe Sattler


Telefon +49 3677 69 4577

E-Mail senden


Dipl.-Inf. Stefan Hagedorn

Technische Universität Ilmenau
Fakultät für Informatik und Automatisierung
FG Datenbanken und Informationssysteme
Postfach 100 565
D-98684 Ilmenau

Tel.: +49 (0) 3677 69 4539
FAX: +49 (0) 3677 69 4851
E-Mail: stefan.hagedorn [at]
Raum: Zusebau 3088

Short CV

I was born in Mühlhausen, Germany in 1985. I received my Diploma (M. Sc.) in Computer Science from the Ilmenau University of Technology, Germany in July 2010. Until July 2012 I worked as a software developer. Since September 2012 I am a Ph.D. student in the Database and Information Systems group at the Faculty of Computer Science and Automation of the Ilmenau University of Technology.



  • When sweet and cute isn't enough anymore: Solving scalability issues in Python Pandas with Grizzly
    Stefan Hagedorn
  • A Gray-Box Modeling Methodology for Runtime Prediction of Apache Spark Jobs
    Hani Al-Sayeh, Stefan Hagedorn, Kai-Uwe Sattler
    Journal of Distributed And Parallel Databases, To Appear, 2020, Publisher Springer
    [Bibtex] [Abstract]


  • Processing Large Raster and Vector Data in Apache Spark
    Stefan Hagedorn, Oliver Birli, Kai-Uwe Sattler
    18. Fachtagung für Datenbanksysteme für Business, Technologie und Web (BTW), Demo Track, March, Pages 551--554, 2019
    [Bibtex] [Abstract]


  • Cost-based Sharing and Recycling of (Intermediate) Results in Dataflow Programs
    Stefan Hagedorn, Kai-Uwe Sattler
    ADBIS, September, 2018, Publisher Springer
    [Bibtex] [Download]


  • Efficient spatio-temporal event processing with STARK
    Stefan Hagedorn, Timo Raeth
    EDBT, Pages 570--573, 2017
    [Bibtex] [Abstract] [Download]
  • The STARK Framework for Spatio-Temporal Data Analytics on Spark
    Stefan Hagedorn, Philipp Goetze, Kai-Uwe Sattler
    BTW, Pages 123--142, 2017
    [Bibtex] [Abstract] [Download]
  • Big Spatial Data Processing Frameworks: Feature and Performance Evaluation
    Stefan Hagedorn, Philipp Goetze, Kai-Uwe Sattler
    EDBT, Pages 490--493, 2017
    [Bibtex] [Abstract] [Download]


  • Stream Processing Platforms for Analyzing Big Dynamic Data
    Stefan Hagedorn, Philipp Goetze, Omran Saleh, Kai-Uwe Sattler
    it-Information Technology, June, Pages 195--205, Volume 58, 2016, 4
    [Bibtex] [Abstract] [Download]
  • Piglet: Interactive and Platform Transparent Analytics for RDF & Dynamic Data
    Stefan Hagedorn, Kai-Uwe Sattler
    Proceedings of the 25th International Conference Companion on World Wide Web, April, Pages 187--190, WWW 2016 Companion, 2016, Montreal, Quebec, Canada
    [Bibtex] [Download]
  • Refining Imprecise Spatio-temporal Events: A Network-based Approach.
    Andreas Spitz, Johanna Geiss, Michael Gertz, Stefan Hagedorn, Kai-Uwe Sattler
    10th ACM SIGSPATIAL Workshop on Geographic Information Retrieval (GIR), To appear., 2016


  • A Framework for Scalable Correlation of Spatio-temporal Event Data
    Stefan Hagedorn, Kai-Uwe Sattler, Michael Gertz
    BICOD, July, 2015, Edinburgh
    [Bibtex] [Abstract] [Download]
  • Large-scale Analysis of Event Data
    Stefan Hagedorn, Kai-Uwe Sattler, Michael Gertz
    GvDB, May, 2015, Gommern
    [Bibtex] [Abstract] [Download]
  • SPARQling Pig - Processing Linked Data with Pig Latin
    Stefan Hagedorn, Katja Hose, Kai-Uwe Sattler
    BTW, March, 2015
    [Bibtex] [Abstract] [Download]
  • Complex Event Processing on Linked Stream Data
    Omran Saleh, Stefan Hagedorn, Kai-Uwe Sattler
    Datenbank-Spektrum, Number 2, Pages 119--129, Volume 15, 2015, Publisher Springer Berlin Heidelberg
    [Bibtex] [Download]


  • LODHub - A Platform for Sharing and Integrated Processing of Linked Open Data
    Stefan Hagedorn, Kai-Uwe Sattler
    In proceeding of: 5th International Workshop on Data Engineering Meets the Semantic Web, March, Pages 260-262, 2014, Publisher IEEE
    [Bibtex] [Abstract]
  • LODHub - A Platform for Sharing and Analyzing large-scale Linked Open Data
    Stefan Hagedorn, Kai-Uwe Sattler
    Proc. of ISWC 2014 demo track, October, Pages 181-184, Volume 1272, 2014, Riva del Garda, Italy
    [Bibtex] [Abstract] [Download]
  • Resource Planning for SPARQL Query Executionon Data Sharing Platforms
    Stefan Hagedorn, Katja Hose, Kai-Uwe Sattler, Juergen Umbrich
    Proc. of the Fifth International Workshop on Consuming Linked Data (COLD2014) at ISWC, October, Volume 1264, 2014
    [Bibtex] [Abstract] [Download]


  • Efficient Parallel Processing of Analytical Queries on Linked Data
    Stefan Hagedorn, Kai-Uwe Sattler
    On the Move to Meaningful Internet Systems: OTM 2013 Conferences, September, Pages 452-469, Lecture Notes in Computer Science, Volume 8185, 2013, Publisher Springer Berlin Heidelberg
    [Bibtex] [Download]
  • Gesture-Based Navigation in Graph Databases - The Kevin Bacon Game -
    Felix Beier, Stephan Baumann, Stefan Hagedorn, Heiko Betz, Timo Wagner
    BTW 2013, March, Pages 511-514, 2013, Magdeburg, Germany
    [Bibtex] [Abstract] [Download]
  • Discovery Querying in Linked Open Data
    Stefan Hagedorn, Kai-Uwe Sattler
    Proceedings of the Joint EDBT/ICDT 2013 Workshops, Pages 38-44, 2013, Genoa, Italy
    [Bibtex] [Download]


  • Topiek - Dokumentenmanagementsystem trifft semantisches Web (Demonstration)
    D. Klan, St. Hagedorn, St. Hirte, H. Betz, F. Kassem, K.-U. Sattler
    LWA (FG-KDML), September, 2011
    [Bibtex] [Abstract] [Download]