Papers

2026

1. 

   Waiting to Decompress: The Economics of LLM-Based Compression

   Andreas Kipf, Tobias Schmidt, Ping-Lin Kuo, Skander Krid, Moritz Rengert, Luca Heller, Andreas Zimmerer, Mihail Stoian, Varun Pandey, and Alexander Renen

   In 16th Conference on Innovative Data Systems Research, CIDR 2026, Chaminade, HI, USA, January 18-21, 2026

   Bib PDF Code

   @inproceedings{kipf2025llmcompress,
     author = {Kipf, Andreas and Schmidt, Tobias and Kuo, Ping-Lin and Krid, Skander and Rengert, Moritz and Heller, Luca and Zimmerer, Andreas and Stoian, Mihail and Pandey, Varun and van Renen, Alexander},
     title = {Waiting to Decompress: The Economics of {LLM}-Based Compression},
     booktitle = {16th Conference on Innovative Data Systems Research, {CIDR} 2026, Chaminade, HI, USA, January 18-21},
     publisher = {www.cidrdb.org},
     year = {2026},
   }

2025

1. 

   SemBench: A Benchmark for Semantic Query Processing Engines

   Jiale Lao, Andreas Zimmerer, Olga Ovcharenko, Tianji Cong, Matthew Russo, Gerardo Vitagliano, Michael Cochez, Fatma Özcan, Gautam Gupta, Thibaud Hottelier, H. V. Jagadish, Kris Kissel, Sebastian Schelter, Andreas Kipf, and Immanuel Trummer

   CoRR, 2025

   Bib PDF Code Website

   @article{lao2025sembench,
     author = {Lao, Jiale and Zimmerer, Andreas and Ovcharenko, Olga and Cong, Tianji and Russo, Matthew and Vitagliano, Gerardo and Cochez, Michael and {\"{O}}zcan, Fatma and Gupta, Gautam and Hottelier, Thibaud and Jagadish, H. V. and Kissel, Kris and Schelter, Sebastian and Kipf, Andreas and Trummer, Immanuel},
     title = {SemBench: {A} Benchmark for Semantic Query Processing Engines},
     journal = {CoRR},
     volume = {abs/2511.01716},
     year = {2025},
     eprinttype = {arXiv},
     eprint = {2511.01716},
   }

2. 

   Instance-Optimized String Fingerprints

   Mihail Stoian, Johannes Thürauf, Andreas Zimmerer, Alexander Renen, and Andreas Kipf

   VLDB 2025 Workshop: Applied AI for Database Systems and Applications (AIDB 2025), 2025

   Bib PDF Code

   @article{Stoian2025StringFingerprints,
     author = {Stoian, Mihail and Thürauf, Johannes and Zimmerer, Andreas and van Renen, Alexander and Kipf, Andreas},
     title = {Instance-Optimized String Fingerprints},
     journal = {{VLDB} 2025 Workshop: Applied AI for Database Systems and Applications ({AIDB} 2025)},
     year = {2025},
   }

3. 

   Parachute: Single-Pass Bi-Directional Information Passing

   Mihail Stoian, Andreas Zimmerer, Skander Krid, Amadou Latyr Ngom, Jialin Ding, Tim Kraska, and Andreas Kipf

   Proc. VLDB Endow., 2025

   Bib PDF Code

   @article{Stoian2025Parachute,
     author = {Stoian, Mihail and Zimmerer, Andreas and Krid, Skander and Ngom, Amadou Latyr and Ding, Jialin and Kraska, Tim and Kipf, Andreas},
     title = {Parachute: Single-Pass Bi-Directional Information Passing},
     journal = {Proc. {VLDB} Endow.},
     year = {2025},
   }

4. 

   Pruning in Snowflake: Working Smarter, Not Harder

   Andreas Zimmerer, Damien Dam, Jan Kossmann, Juliane Waack, Ismail Oukid, and Andreas Kipf

   In Companion of the 2025 International Conference on Management of Data, SIGMOD/PODS 2025, Berlin, Germany, June 22–27, 2025, 2025

   Bib PDF Blog Slides

   @inproceedings{Zimmerer2025Pruning,
     title = {Pruning in Snowflake: Working Smarter, Not Harder},
     author = {Zimmerer, Andreas and Dam, Damien and Kossmann, Jan and Waack, Juliane and Oukid, Ismail and Kipf, Andreas},
     editor = {Markl, Volker and Hellerstein, Joseph M. and Abouzied, Azza},
     booktitle = {Companion of the 2025 International Conference on Management of Data, {SIGMOD/PODS} 2025, Berlin, Germany, June 22--27, 2025},
     pages = {757--770},
     publisher = {{ACM}},
     year = {2025},
     url = {https://doi.org/10.1145/3722212.3724447},
   }

5. 

   Virtual: Compressing Data Lake Files

   Mihail Stoian, Alexander Renen, Jan Kobiolka, Ping-Lin Kuo, Andreas Zimmerer, Josif Grabocka, and Andreas Kipf

   In Proceedings 28th International Conference on Extending Database Technology, EDBT 2025, Barcelona, Spain, March 25-28, 2025, 2025

   Best Demo Award Bib PDF Code Website

   This demo paper received the Best Demo Award at EDBT 2025.

   @inproceedings{DBLP:conf/edbt/StoianRKKZGK25,
     title = {Virtual: Compressing Data Lake Files},
     author = {Stoian, Mihail and van Renen, Alexander and Kobiolka, Jan and Kuo, Ping{-}Lin and Zimmerer, Andreas and Grabocka, Josif and Kipf, Andreas},
     editor = {Simitsis, Alkis and Kemme, Bettina and Queralt, Anna and Romero, Oscar and Jovanovic, Petar},
     booktitle = {Proceedings 28th International Conference on Extending Database Technology,
                       {EDBT} 2025, Barcelona, Spain, March 25-28, 2025},
     pages = {1066--1069},
     publisher = {OpenProceedings.org},
     year = {2025},
     url = {https://doi.org/10.48786/edbt.2025.90},
   }