Marcel Gehrke

- Research Assistant -

Curriculum Vitae

I moved to the University Hamburg.You can find me here.

Since November 2022 - Principal Investigator in the AnoMed project
October 2022 - March 2024 Responsible for the research data management at the University of Lübeck
December 2021 - March 2024 PostDoc at the Institute for Informationsystems at the Universität zu Lübeck
April 2017 - December 2021 - Research Assistant at the Institute for Informationsystems at the Universität zu Lübeck
September 2015- March 2017 Consultant at Avanade Deutschland GmbH

Research Interests

Machine Learning
Probabilistic Graphical Models
Lifted Inference
Temporal and Relational Models
Privacy
Causality
Text Understanding

Lectures

Intelligent Agents (MA, English, 6lect, 2ex, winter 2023/24, together with Ralf Möller and Özgür Özçep); part of lecture + exercises
Advanced Topics Data Science and AI: Probabilistic Relational Models (MA, English, 2lect, 1ex, summer 2022); lecture + exercises
Introduction to Web and Data Science (BA, German/English, 2lect, 1ex, winter 2022/23); lecture

Research Activities

Organisation

26th International Conference on Conceptual Strucutres, September, Bolzano, Italy (ICCS 2021), Co-Programme Chair

Tutorials

Let's Talk about Palm Leafs - From Minimal Data to Text Understanding, at KI 2023 in collaboration with Tanya Braun und Magnus Bender, 26.-29.9.2023
Statistical Relational AI - Exploiting Symmetries, at KR 2023, in collaboration with Tanya Braun and Marco Wilhelm, 2.-8.9.2023
StaRAI - Semantics and Symmetries in Exact Lifted Inference, at ECAI 2020, in collaboration with Tanya Braun August 29-30, 2020
StaRAI - Semantics and Inference at the FLAIRS-33, in collaboration with Tanya Braun, Prof. Dr. Gabriele Kern-Isberner and Marco Wilhelm, 17.-20.05.2020 (FLAIRS-33 got cancelled)
Dynamic StarAI at the KI 2019 in collaboration with Tanya Braun and Ralf Möller, September 23-26, 2019
Inference in Statistical Relational AI at the ICCS 2019 in collaboration with Tanya Braun, 01.-04.07.2019

Review Activities

Conferences: AAAI, AISTATS, KR, UAI, ICCS , ICBK
Journals: KAIS, AMAI

Student Projects

Moritz Hoffmann: Preparation of the project code of LJT and LDJT; see LJT Implementation und LDJT Implementation.
Tristan Potten: 3D -printing of objects from MRT scans. As well as display and real-time alignment of virtual objects by external position sensors, including the display of additional information.
Simon Schiff: Enriching of synthesized relational patient data with time series data

Publications

2019

Marcel Gehrke, Tanya Braun, and Ralf Möller,
Efficient Multiple Query Answering in Switched Probabilistic Relational Models, in Proceedings of AI 2019: Advances in Artificial Intelligence (AI 2019) , Springer, Dec.2019. pp. 104--116.

DOI:

https://doi.org/10.1007/978-3-030-35288-2_9

ISBN:

978-3-030-35288-2

Bibtex:

@inproceedings{GehBrMo19f,
  author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller},
  title = {{Efficient Multiple Query Answering in Switched Probabilistic Relational Models}},
  Booktitle = {Proceedings of {AI} 2019: Advances in Artificial Intelligence ({AI} 2019)},
  series    = {Lecture Notes in Computer Science},
  volume    = {11919},
  pages     = {104--116},
  publisher = {Springer},
  year      = {2019},
  doi = {https://doi.org/10.1007/978-3-030-35288-2_9},
  isbn= {978-3-030-35288-2}
}

Mattis Hartwig, Marcel Gehrke, and Ralf Möller,
Approximate Query Answering in Complex Gaussian Mixture Models, in IEEE International Conference on Big Knowledge, (ICBK 2019), Beijing, China, November 10-11, 2019 , IEEE, Nov.2019. pp. 81--86.

File:

ICBK.2019.00019

Bibtex:

@inproceedings{HarGeMo19,
  title={{Approximate Query Answering in Complex Gaussian Mixture Models}},
  author = {Mattis Hartwig and Marcel Gehrke and Ralf M\"oller}, 
booktitle = {{IEEE} International Conference on Big Knowledge, (ICBK 2019), Beijing, China, November 10-11, 2019},
  year={2019},
  pages={81--86},
  publisher = {{IEEE}},
  url       = {https://doi.org/10.1109/ICBK.2019.00019},
  publisher = {IEEE}
}

Marcel Gehrke, Simon Schiff, Tanya Braun, and Ralf Möller,
Which Patient to Treat Next? Probabilistic Stream-based Reasoning for Decision Support and Monitoring, in IEEE International Conference on Big Knowledge, (ICBK 2019), Beijing, China, November 10-11, 2019 , IEEE, Nov.2019. pp. 73--80.

DOI:

https://doi.org/10.1109/ICBK.2019.00018

Bibtex:

@inproceedings{GehSchBrMo19a,
  author = {Marcel Gehrke and Simon Schiff and Tanya Braun and Ralf M\"oller}, 
title={{Which Patient to Treat Next? Probabilistic Stream-based Reasoning for Decision Support and Monitoring}},
 booktitle = {{IEEE} International Conference on Big Knowledge, (ICBK 2019), Beijing, China, November 10-11, 2019},
  year      = {2019},
  pages     = {73--80},
  publisher = {IEEE},
  doi={https://doi.org/10.1109/ICBK.2019.00018}
}

Marcel Gehrke, Tanya Braun, and Ralf Möller,
Lifted Temporal Most Probable Explanation, in Graph-Based Representation and Reasoning - 24th International Conference on Conceptual Structures (ICCS 2019) , Springer, Jul.2019. pp. 72--85.

DOI:

https://doi.org/10.1007/978-3-030-23182-8_6

ISBN:

978-3-030-23182-8

Bibtex:

@inproceedings{GehBrMo19c,
  author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller}, 
  title = {{Lifted Temporal Most Probable Explanation}}, 
  booktitle = {Graph-Based Representation and Reasoning - 24th International Conference on Conceptual Structures (ICCS 2019)},
  series    = {Lecture Notes in Computer Science},
  volume    = {11530},
  pages     = {72--85},
  publisher = {Springer},
  year      = {2019},
  doi = {https://doi.org/10.1007/978-3-030-23182-8_6},
  isbn={978-3-030-23182-8}
}

Tanya Braun, and Marcel Gehrke,
Inference in Statistical Relational AI, in Proceedings of the International Conference on Conceptual Structures 2019 , Springer, Jul.2019. pp. xvii--xix.

DOI:

https://doi.org/10.1007/978-3-030-23182-8

Bibtex:

@inproceedings{BraGe19a,
  author = {Tanya Braun and Marcel Gehrke}, 
  title = {{Inference in Statistical Relational AI}}, 
	Booktitle = {Proceedings of the International Conference on Conceptual Structures 2019},
  year = {2019},
  publisher = {Springer},
  pages = {xvii--xix},
  doi = {https://doi.org/10.1007/978-3-030-23182-8}
}

Marcel Gehrke, Tanya Braun, and Ralf Möller,
Lifted Temporal Maximum Expected Utility, in Proceedings of the 32nd Canadian Conference on Artificial Intelligence (Canadian AI 2019), Kingston, ON, Canada, May 28-31, 2019 , Springer, May2019. pp. 380--386.

DOI:

https://doi.org/10.1007/978-3-030-18305-9_33

ISBN:

978-3-030-18305-9

Bibtex:

@inproceedings{GehBrMo19d,
  author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller}, 
  title = {{Lifted Temporal Maximum Expected Utility}}, 
  booktitle = {Proceedings of the 32nd Canadian Conference on Artificial Intelligence (Canadian AI 2019), Kingston, ON, Canada,  May 28-31, 2019},
  series    = {Lecture Notes in Computer Science},
  volume    = {11489},
  pages     = {380--386},
  publisher = {Springer},
  year      = {2019},
  doi = {https://doi.org/10.1007/978-3-030-18305-9_33},
  isbn={978-3-030-18305-9}
}

Marcel Gehrke, Tanya Braun, and Ralf Möller,
Relational Forward Backward Algorithm for Multiple Queries, in Proceedings of the Thirty-Second International Florida Artificial Intelligence Research Society Conference, Sarasota, Florida, USA, May 19-22 , AAAI Press, May2019. pp. 464--469.

File:

18230

Bibtex:

@inproceedings{GehBrMo19a,
  author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller}, 
  title = {{Relational Forward Backward Algorithm for Multiple Queries}}, 
 booktitle = {Proceedings of the Thirty-Second International Florida Artificial
               Intelligence Research Society Conference, Sarasota, Florida, USA,
               May 19-22},
  pages     = {464--469},
  publisher = {{AAAI} Press},
  year      = {2019},
  url       = {https://aaai.org/ocs/index.php/FLAIRS/FLAIRS19/paper/view/18230}
}

Marcel Gehrke, Tanya Braun, and Ralf Möller,
Uncertain Evidence for Probabilistic Relational Models, in Proceedings of the 32nd Canadian Conference on Artificial Intelligence, Canadian AI 2019 , Springer, 052019. pp. 80--93.

DOI:

https://doi.org/10.1007/978-3-030-18305-9_7

ISBN:

978-3-030-18305-9

Bibtex:

@inproceedings{GehBrMo19e,
  author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller}, 
  title = {{Uncertain Evidence for Probabilistic Relational Models}}, 
  booktitle = {Proceedings of the 32nd Canadian Conference on Artificial Intelligence, Canadian AI 2019},
  series    = {Lecture Notes in Computer Science},
  volume    = {11489},
  pages     = {80--93},
  publisher = {Springer},
  isbn={978-3-030-18305-9},
  year = {2019},
  publisher = {Springer},
  doi = {https://doi.org/10.1007/978-3-030-18305-9_7},
}

Marcel Gehrke, Tanya Braun, Ralf Möller, Alexander Waschkau, Christoph Strumann, and Jost Steinhäuser,
Lifted Maximum Expected Utility, in Artificial Intelligence in Health , Springer International Publishing, 2019. pp. 131--141.

DOI:

https://doi.org/10.1007/978-3-030-12738-1_10

ISBN:

978-3-030-12738-1

Bibtex:

@inproceedings{GehBrMo19b,
    Author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller and Alexander Waschkau and Christoph Strumann and Jost Steinhäuser},
    Title = {{Lifted Maximum Expected Utility}},
  booktitle = {Artificial Intelligence in Health}, 
  pages={131--141},
  year = {2019},
  isbn={978-3-030-12738-1},
  doi={https://doi.org/10.1007/978-3-030-12738-1_10},
  publisher = {Springer International Publishing}
}

2018

Marcel Gehrke, Tanya Braun, and Ralf Möller,
Answering Multiple Conjunctive Queries with the Lifted Dynamic Junction Tree Algorithm, in Proceedings of the AI 2018: Advances in Artificial Intelligence , Springer, Dec.2018. pp. 543--555.

DOI:

https://doi.org/10.1007/978-3-030-03991-2_50

ISBN:

978-3-030-03991-2

Bibtex:

@inproceedings{GehBrMo18d,
  author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller}, 
  title = {{Answering Multiple Conjunctive Queries with the Lifted Dynamic Junction Tree Algorithm}}, 
  booktitle = {Proceedings of the AI 2018: Advances in Artificial Intelligence}, 
  year = {2018},
  pages={543--555},
  publisher={Springer},
  isbn={978-3-030-03991-2},
  doi = {https://doi.org/10.1007/978-3-030-03991-2_50}
}

Marcel Gehrke, Tanya Braun, and Ralf Möller,
Preventing Unnecessary Groundings in the Lifted Dynamic Junction Tree Algorithm, in Proceedings of the AI 2018: Advances in Artificial Intelligence , Springer, Dec.2018. pp. 556--562.

DOI:	https://doi.org/10.1007/978-3-030-03991-2_51
ISBN:	978-3-030-03991-2
File:	1807.00744
Bibtex:	@inproceedings{GehBrMo18e, author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller}, title = {{Preventing Unnecessary Groundings in the Lifted Dynamic Junction Tree Algorithm}}, booktitle = {Proceedings of the AI 2018: Advances in Artificial Intelligence}, year = {2018}, pages={556--562}, publisher = {Springer}, isbn={978-3-030-03991-2}, doi={https://doi.org/10.1007/978-3-030-03991-2_51} }

Marcel Gehrke, Tanya Braun, and Ralf Möller,
Towards Preventing Unnecessary Groundings in the Lifted Dynamic Junction Tree Algorithm, in Proceedings of KI 2018: Advances in Artificial Intelligence , Springer, Sep.2018. pp. 38--45.

DOI:

https://doi.org/10.1007/978-3-030-00111-7_4

ISBN:

978-3-030-00111-7

Bibtex:

@inproceedings{GehBrMo18c,
  author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller}, 
  title = {{Towards Preventing Unnecessary Groundings in the Lifted Dynamic Junction Tree Algorithm}}, 
  booktitle = {Proceedings of {KI} 2018: Advances in Artificial Intelligence}, 
  year = {2018},
  pages={38--45},
  publisher = {Springer},
  doi = {https://doi.org/10.1007/978-3-030-00111-7_4},
  isbn={978-3-030-00111-7}
}

Marcel Gehrke, Tanya Braun, and Ralf Möller,
Answering Hindsight Queries with Lifted Dynamic Junction Trees, in 8th International Workshop on Statistical Relational AI at the 27th International Joint Conference on Artificial Intelligence , 072018.

File:

1807.01586

Bibtex:

@inproceedings{GehBrMo18b,
  author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller}, 
  title = {{Answering Hindsight Queries with Lifted Dynamic Junction Trees}}, 
  booktitle = {8th International Workshop on Statistical Relational AI at the 27th International Joint Conference on Artificial Intelligence}, 
  year = {2018},
  url = {https://arxiv.org/abs/1807.01586}
}

Marcel Gehrke, Tanya Braun, Ralf Möller, Alexander Waschkau, Christoph Strumann, and Jost Steinhäuser,
Towards Lifted Maximum Expected Utility, in Proceedings of the First Joint Workshop on Artificial Intelligence in Health in Conjunction with the 27th IJCAI, the 23rd ECAI, the 17th AAMAS, and the 35th ICML , CEUR-WS.org, 072018. pp. 93--96.

File:

short8.pdf

Bibtex:

@inproceedings{Gehrke2018TLMEU,
    Author = {Marcel Gehrke and Tanya Braun and Ralf M\"oller and Alexander Waschkau and Christoph Strumann and Jost Steinhäuser},
    Title = {{Towards Lifted Maximum Expected Utility}},
    Year = {2018},
    Booktitle={Proceedings of the First Joint Workshop on Artificial Intelligence in Health in Conjunction with the 27th IJCAI, the 23rd ECAI, the 17th AAMAS, and the 35th ICML},
series    = {{CEUR} Workshop Proceedings},
volume    = {2142},
year = {2018},
pages = {93--96},
publisher = {CEUR-WS.org},
url = {http://ceur-ws.org/Vol-2142/short8.pdf}}

Marcel Gehrke, Tanya Braun, and Ralf Möller,
Lifted Dynamic Junction Tree Algorithm, in Proceedings of the International Conference on Conceptual Structures , Springer, 062018. pp. 55--69.

DOI:

https://doi.org/10.1007/978-3-319-91379-7_5

File:

Dateilink

Bibtex:

@inproceedings{gehrke2018ldjt,
  author={Marcel Gehrke and Tanya Braun and Ralf M{\"o}ller},
  title={{Lifted Dynamic Junction Tree Algorithm}},
  booktitle={Proceedings of the International Conference on Conceptual Structures},
  year={2018},
  pages = {55--69}
  publisher={Springer},
  doi = {https://doi.org/10.1007/978-3-319-91379-7_5}
}

Simon Schiff, Marcel Gehrke, and Ralf Möller,
Efficient Enriching of Synthesized Relational Patient Data with Time Series Data, Procedia Computer Science , vol. 141, pp. 531 - 538, 2018. Elsevier Science.

DOI:

https://doi.org/10.1016/j.procs.2018.10.130

Bibtex:

@article{SchGeMo18a,
  author = {Simon Schiff and Marcel Gehrke and Ralf M\"oller}, 
  title = {{Efficient Enriching of Synthesized Relational Patient Data with Time Series Data}}, 
  journal = {Procedia Computer Science},
  volume = {141},
  pages = {531 - 538},
  year = {2018},
  note = {The 8th International Conference on Current and Future Trends of Information and Communication Technologies in Healthcare (ICTH-2018) / Affiliated Workshops},
  issn = {1877-0509},
  doi = {https://doi.org/10.1016/j.procs.2018.10.130},
  publisher = {Elsevier Science}
}