Martin Kiefer

Research associate at the Database Systems and Information Management Group of TU Berlin since April 2016.

I am a PhD candidate supervised by Volker Markl. I received my M.Sc degree at TU Berlin and worked as a student research assistant at DIMA for two and a half years. Prior to that, I received my B.Sc degree at Baden-Württemberg Cooperative State University (DHBW Stuttgart) and worked at IBM for three years.

My research interests include data management, modern hardware, data summarization, and query optimization.



TU Berlin, Building EN
Office EN741
Einsteinufer 17
10587 Berlin, Germany

TU: +49 30 31422784
DFKI: +49 30 238951843


  • Our paper 'Scotch: Generating FPGA-Accelerators for Sketching at Line-Rate' was accepted for publication in PVLDB and will be presented at VLDB'21 in (hopefully) Copenhagen, Denmark.
  • I was part of a delegation of DIMA researchers visiting US universities and companies in April'19. Slides and a video of our talks are online.

Publications & Talks


VLDB 2021
"Estimating Join Selectivities using Bandwidth-Optimized Kernel Density Models": Martin Kiefer, Ilias Poulakis, Sebastian Breß, and Volker Markl. In The Proceedings of the VLDB Endowment (PVLDB), 14(3), 2021.
VLDB 2018
"Estimating Join Selectivities using Bandwidth-Optimized Kernel Density Models": Martin Kiefer, Max Heimel, Sebastian Breß, and Volker Markl. In The Proceedings of the VLDB Endowment (PVLDB), 10(13), 2017.
"Self-Tuning, GPU-Accelerated Kernel Density Models for Multidimensional Selectivity Estimation": Max Heimel, Martin Kiefer, Volker Markl. In the Proceedings of the 2015 ACM SIGMOD International Conference on Management of Data, Melbourne, VIC, Australia.
EDBT 2015
"Demonstrating Transfer-Efficient Sample Maintenance on Graphics Cards": Martin Kiefer, Max Heimel, Volker Markl. In the Proceedings of the 18th International Conference on Extending Database Technology (EDBT), March 23-27, 2015.


"Error-driven sample maintenance in GPU-accelerated Kernel Density Estimation": Martin Kiefer. Invited talk at Data (Co-)Processing on Heterogeneous Hardware (DAPHNE), March 2015.


MSc 2016
"Investigating GPU-accelerated Kernel Density Estimators for Join Selectivity Estimation": Martin Kiefer. Master Thesis, Institute of Software Engineering and Theoretical Computer Science,
TU Berlin, April 2016.
BSc 2013
"Evaluation of Possibilities for the Integration of a Large-Scale Computer Architecture's SMT Functionality in a Virtualization Solution": Martin Kiefer. Bachelor Thesis, Cooperative State Universtiy Baden-Württemberg / IBM,
September 2013.

Non-Scientific Publications & Talks

Java Aktuell 2013
"Integration von Java via JNI in traditionelle Cobol-Batch-Anwendungen": Marc Bauer, Martin Kiefer. Java aktuell (German Java User Group Magazine), March 2013.
GSE 2012
"COBOL-Java Interaction for Batch and OLTP Mainframe Application Modernization": Martin Kiefer, Max Veit. Talk at Enterprise European Working Group (Guide Share Europe) Düsseldorf, Germany, October 2012.


Summer Term 2020

Winter Term 2019/20

Summer Term 2019

Winter Term 2018/19

Summer Term 2018

Winter Term 2017/18

Summer Term 2017

Winter Term 2016/17

Summer Term 2016

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