Papers | Andi Zimmerer

2026

SemCEB: A Cardinality Estimation Benchmark for Semantic Operators

Andreas Zimmerer, Claudius Kühn, Yang Li, Mihail Stoian, Renata Borovica-Gajic, and Andreas Kipf

In 2nd Workshop on Novel Optimizations for Visionary AI Systems (NOVAS), 2026

@inproceedings{zimmerer2026semceb,
  title = {{SemCEB}: A Cardinality Estimation Benchmark for Semantic Operators},
  author = {Zimmerer, Andreas and Kühn, Claudius and Li, Yang and Stoian, Mihail and Borovica-Gajic, Renata and Kipf, Andreas},
  year = {2026},
  maintitle = {Proceedings of the {VLDB} Endowment},
  booktitle = {2nd Workshop on Novel Optimizations for Visionary {AI} Systems ({NOVAS})},
  publisher = {{VLDB} Endowment},
}

MLSkip: Data Skipping for ML Filters via Lightweight Metadata

Mihail Stoian, Mark Gerarts, Pascal Ginter, Andreas Zimmerer, Jan Van den Bussche, and Andreas Kipf

In 7th Workshop on Applied AI for Database Systems and Applications (AIDB), 2026

Bib PDF Code

@inproceedings{stoian2026mlskip,
  title = {{MLSkip}: Data Skipping for {ML} Filters via Lightweight Metadata},
  author = {Stoian, Mihail and Gerarts, Mark and Ginter, Pascal and Zimmerer, Andreas and Bussche, Jan Van {den} and Kipf, Andreas},
  year = {2026},
  maintitle = {Proceedings of the {VLDB} Endowment},
  booktitle = {7th Workshop on Applied {AI} for Database Systems and Applications ({AIDB})},
  publisher = {{VLDB} Endowment},
}

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

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

In Proceedings of the VLDB Endowment (EA & B), 2025

Bib PDF Code Website

@inproceedings{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},
  booktitle = {Proceedings of the {VLDB} Endowment (EA & B)},
  publisher = {{VLDB} Endowment},
  year = {2025},
}

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},
}

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},
}

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},
}

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},
}