Publications

2026

1. 

   SemCEB: A Cardinality Estimation Benchmark for Semantic Operators

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

   CoRR, 2026

   Bib PDF Code

   @article{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},
     journal = {CoRR},
     volume = {abs/2606.23081},
     year = {2026},
     eprinttype = {arXiv},
     eprint = {2606.23081},
     archiveprefix = {arXiv},
     primaryclass = {cs.DB},
   }

2. 

   MLSkip: Data Skipping for ML Filters via Lightweight Metadata

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

   CoRR, 2026

   Bib PDF Code

   @article{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},
     journal = {CoRR},
     volume = {abs/2606.03946},
     year = {2026},
     eprinttype = {arXiv},
     eprint = {2606.03946},
     archiveprefix = {arXiv},
     primaryclass = {cs.DB},
   }

3. 

   OptFSST: Optimized FSST String Compression

   Hedi Chehaidar, Mihail Stoian, Moritz Stargalla, and Andreas Kipf

   In Sixteenth International Workshop on Accelerating Analytics and Data Management Systems Using Modern Processor and Storage Architectures (ADMS), 2026

   Bib Code

   @inproceedings{chehaidar2026optfsst,
     title = {{OptFSST}: Optimized {FSST} String Compression},
     author = {Chehaidar, Hedi and Stoian, Mihail and Stargalla, Moritz and Kipf, Andreas},
     year = {2026},
     maintitle = {Proceedings of the {VLDB} Endowment},
     booktitle = {Sixteenth International Workshop on Accelerating Analytics and Data Management Systems Using Modern Processor and Storage Architectures (ADMS)},
     publisher = {VLDB Endowment},
   }

4. 

   High-Throughput LLM-Based Compression and What It Takes

   David Adams, Luisa Neubauer, Ping-Lin Kuo, Mihail Stoian, Thomas Rückstieß, Josif Grabocka, Renata Borovica-Gajic, and Andreas Kipf

   In Sixteenth International Workshop on Accelerating Analytics and Data Management Systems Using Modern Processor and Storage Architectures (ADMS), 2026

   Bib

   @inproceedings{adams2026fastllmcompression,
     title = {High-Throughput {LLM}-Based Compression and What It Takes},
     author = {Adams, David and Neubauer, Luisa and Kuo, Ping-Lin and Stoian, Mihail and Rückstieß, Thomas and Grabocka, Josif and Borovica-Gajic, Renata and Kipf, Andreas},
     year = {2026},
     maintitle = {Proceedings of the {VLDB} Endowment},
     booktitle = {Sixteenth International Workshop on Accelerating Analytics and Data Management Systems Using Modern Processor and Storage Architectures (ADMS)},
     publisher = {VLDB Endowment},
   }

5. 

   How Out-of-Bounds Are Your Cardinality Estimates?

   Mihail Stoian, Tiemo Bang, Hangdong Zhao, Jesús Camacho-Rodríguez, Yuanyuan Tian, and Andreas Kipf

   In Proceedings of the VLDB Endowment, 2026

   Bib Code Website

   @inproceedings{stoian2026xbounddemo,
     title = {How Out-of-Bounds Are Your Cardinality Estimates?},
     author = {Stoian, Mihail and Bang, Tiemo and Zhao, Hangdong and Camacho-Rodríguez, Jesús and Tian, Yuanyuan and Kipf, Andreas},
     year = {2026},
     booktitle = {Proceedings of the {VLDB} Endowment},
     publisher = {VLDB Endowment},
   }

6. 

   The Case for Cardinality Lower Bounds

   Mihail Stoian, Tiemo Bang, Hangdong Zhao, Jesús Camacho-Rodríguez, Yuanyuan Tian, and Andreas Kipf

   CoRR, 2026

   Bib PDF Blog

   @article{stoian2026xbound,
     title = {The Case for Cardinality Lower Bounds},
     author = {Stoian, Mihail and Bang, Tiemo and Zhao, Hangdong and Camacho-Rodríguez, Jesús and Tian, Yuanyuan and Kipf, Andreas},
     journal = {CoRR},
     volume = {abs/2601.13117},
     year = {2026},
     eprinttype = {arXiv},
     eprint = {2601.13117},
     archiveprefix = {arXiv},
     primaryclass = {cs.DB},
   }

7. 

   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},
   }

8. 

   Redbench: Workload Synthesis From Cloud Traces

   Johannes Wehrstein, Roman Heinrich, Mihail Stoian, Skander Krid, Martin Stemmer, Andreas Kipf, Carsten Binnig, and Muhammad El-Hindi

   In Proceedings of the VLDB Endowment (EA & B), 2026

   Bib PDF Code

   @inproceedings{wehrstein2026redbench,
     author = {Wehrstein, Johannes and Heinrich, Roman and Stoian, Mihail and Krid, Skander and Stemmer, Martin and Kipf, Andreas and Binnig, Carsten and El{-}Hindi, Muhammad},
     title = {Redbench: Workload Synthesis From Cloud Traces},
     booktitle = {Proceedings of the {VLDB} Endowment (EA & B)},
     publisher = {VLDB Endowment},
     year = {2026},
   }

2025

1. 

   Opinion Pieces of the BTW 2025 Workshop On Advances in Cloud Data Management

   Thomas Bodner, Alexander Böhm, Maximilian Böther, Ana Klimovic, Dominik Durner, Martin Grund, Andreas Kipf, Ismail Oukid, Berni Schiefer, Panos Parchas, Hinnerk Gildhoff, Philipp Unterbrunner, Tomas Karnagel, Jana Giceva, Tobias Ziegler, and Martin Hentschel

   Datenbank-Spektrum, 2025

   Bib PDF

   @article{btw2025opinion,
     author = {Bodner, Thomas and Böhm, Alexander and Böther, Maximilian and Klimovic, Ana and Durner, Dominik and Grund, Martin and Kipf, Andreas and Oukid, Ismail and Schiefer, Berni and Parchas, Panos and Gildhoff, Hinnerk and Unterbrunner, Philipp and Karnagel, Tomas and Giceva, Jana and Ziegler, Tobias and Hentschel, Martin},
     title = {Opinion Pieces of the BTW 2025 Workshop On Advances in Cloud Data Management},
     journal = {Datenbank-Spektrum},
     publisher = {Springer},
     pages = {1--9},
     volume = {abs/2511.13059},
     year = {2025},
   }

2. 

   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},
   }

3. 

   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},
   }

4. 

   Redbench: A Benchmark Reflecting Real Workloads

   Skander Krid, Mihail Stoian, and Andreas Kipf

   In International Workshop on Exploiting Artificial Intelligence Techniques for Data Management (aiDM ’25), June 22–27, 2025, Berlin, Germany, 2025

   Bib PDF Code

   @inproceedings{krid2025redbench,
     author = {Krid, Skander and Stoian, Mihail and Kipf, Andreas},
     title = {Redbench: A Benchmark Reflecting Real Workloads},
     booktitle = {International Workshop on Exploiting Artificial Intelligence Techniques for Data Management (aiDM '25), June 22--27, 2025, Berlin, Germany},
     publisher = {{ACM}},
     year = {2025},
   }

5. 

   Parachute: Single-Pass Bi-Directional Information Passing

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

   Proceedings of the VLDB Endowment, 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 = {Proceedings of the {VLDB} Endowment},
     year = {2025},
   }

6. 

   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-Companion ’25), June 22–27, 2025, Berlin, Germany, 2025

   Bib PDF Blog

   @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},
     booktitle = {Companion of the 2025 International Conference on Management of Data ({SIGMOD}-Companion '25), June 22--27, 2025, Berlin, Germany},
     publisher = {{ACM}},
     year = {2025},
     isbn = {9798400715648},
   }

7. 

   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{stoian2025virtual,
     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},
   }

2024

1. 

   Lightweight Correlation-Aware Table Compression

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

   In NeurIPS 2024 Third Table Representation Learning Workshop, 2024

   Bib PDF Video Code Slides

   @inproceedings{stoian2024lightweight,
     title = {Lightweight Correlation-Aware Table Compression},
     author = {Stoian, Mihail and van Renen, Alexander and Kobiolka, Jan and Kuo, Ping-Lin and Grabocka, Josif and Kipf, Andreas},
     booktitle = {NeurIPS 2024 Third Table Representation Learning Workshop},
     year = {2024},
     url = {https://openreview.net/forum?id=z7eIn3aShi},
   }

2. 

   DPconv: Super-Polynomially Faster Join Ordering

   Mihail Stoian and Andreas Kipf

   Proceedings of the ACM on Management of Data, 2024

   SIGMOD Research Highlight 2026 and Honorable Mention 2025 Bib PDF Code

   This paper received a Honorable Mention at SIGMOD 2025 and a SIGMOD Research Highlight Award in 2026.

   @article{stoian2024dpconv,
     author = {Stoian, Mihail and Kipf, Andreas},
     title = {DPconv: Super-Polynomially Faster Join Ordering},
     journal = {Proceedings of the {ACM} on Management of Data},
     volume = {2},
     number = {6},
     pages = {234:1--234:26},
     year = {2024},
   }

3. 

   DataLoom: Simplifying Data Loading with LLMs

   Alexander Renen, Mihail Stoian, and Andreas Kipf

   Proceedings of the VLDB Endowment, 2024

   Bib PDF Video Code

   @article{vanrenen2024dataloom,
     author = {van Renen, Alexander and Stoian, Mihail and Kipf, Andreas},
     title = {DataLoom: Simplifying Data Loading with LLMs},
     journal = {Proceedings of the {VLDB} Endowment},
     volume = {17},
     number = {12},
     pages = {4449--4452},
     year = {2024},
     biburl = {https://dblp.org/rec/journals/pvldb/RenenSK24.bib},
     bibsource = {dblp computer science bibliography, https://dblp.org},
   }

4. 

   Corra: Correlation-Aware Column Compression

   Hanwen Liu, Mihail Stoian, Alexander Renen, and Andreas Kipf

   In Proceedings of Workshops at the 50th International Conference on Very Large Data Bases, VLDB 2024, Guangzhou, China, August 26-30, 2024, 2024

   Bib PDF

   @inproceedings{liu2024corra,
     author = {Liu, Hanwen and Stoian, Mihail and van Renen, Alexander and Kipf, Andreas},
     title = {Corra: Correlation-Aware Column Compression},
     booktitle = {Proceedings of Workshops at the 50th International Conference on Very
                       Large Data Bases, {VLDB} 2024, Guangzhou, China, August 26-30, 2024},
     publisher = {VLDB.org},
     year = {2024},
     biburl = {https://dblp.org/rec/conf/vldb/LiuSRK24.bib},
     bibsource = {dblp computer science bibliography, https://dblp.org},
   }