Patrick Schramowski
Patrick Schramowski is a researcher at DFKI whose work on the ethics and safety of large AI models runs from language models to image generators. After an M.Sc. in computer science at the University of Dortmund in 2017 and early work at start-ups, he did his Ph.D. at TU Darmstadt's Machine Learning Lab from 2017 to 2023 in Kristian Kersting's group. A 2022 Nature Machine Intelligence paper he led found a moral direction inside language models, and he coauthored LAION-5B, which won a NeurIPS 2022 Outstanding Paper award. He then built safeguards for image data and generators, including Safe Latent Diffusion at CVPR 2023 and LlavaGuard at ICML 2025. He is a research group leader at DFKI.
Timeline
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2011–2017
Dortmund studies and start-ups
He studies computer science at the University of Dortmund from 2011 and receives his M.Sc. there in 2017. Alongside the degree he is CTO of MateApps GmbH from 2014 to 2016 and co-founder of Pflegix GmbH in 2016.
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2017–2023
A PhD at TU Darmstadt
He joins the Machine Learning group at TU Darmstadt in 2017 and works there as a Ph.D. student at the Machine Learning Lab until 2023. He is part of Kristian Kersting's Artificial Intelligence and Machine Learning group, and his research explores the ethical implications of large-scale, self-supervised, transformer-based models.
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2022
A moral direction in language models
With Cigdem Turan, Nico Andersen, Constantin Rothkopf and Kristian Kersting, he reports in Nature Machine Intelligence in 2022 that language models such as BERT hold a dimension running from good actions to bad actions. The approach works with any language model and needs no access to its parameters, and it can swap verbs to make a sentence less offensive.
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2022
LAION-5B wins Outstanding Paper
He is one of 16 authors of LAION-5B, an open dataset of 5.85 billion CLIP-filtered image-text pairs, which receives a NeurIPS 2022 Outstanding Paper award. He adds a pretrained model that filters potentially offensive, threatening or disturbing content from the data.
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2022–2023
Safe Latent Diffusion
With Manuel Brack, Björn Deiseroth and Kristian Kersting, he introduces safe latent diffusion in 2022, together with the I2P test bed of real-world prompts covering concepts such as nudity and violence. The method removes inappropriate image parts during the diffusion process without additional training, and the paper appears at CVPR 2023.
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2023
Supervising the LeoLM models
LAION releases LeoLM in 2023, a suite of German-language foundation models built on Llama-2 and trained on hessian.AI's supercomputer 42. Björn Plüster leads the project, and he is one of three researchers who give it support, guidance and supervision.
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2024–2025
LlavaGuard image safeguards
With Lukas Helff, Felix Friedrich, Manuel Brack and Kristian Kersting, he coauthors LlavaGuard, posted in 2024 and published at ICML 2025. It is a suite of vision-language-model safeguards from 0.5B to 7B parameters that rate the safety of images against flexible policies.
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As of October 2026
Research group leader at DFKI
He is a research group leader at DFKI, where he has been a researcher since 2022. In 2026 he coauthors No Safe Dose with Felix Friedrich, Lukas Helff, Niharika Hegde and Kristian Kersting, which finds that a text-to-image model's output unsafety rises from 16.6% with no unsafe training images to 25.5% with 5% unsafe images.
Career
- Since 2022DFKIResearch Group Leader
- From 2016Pflegix GmbHCo-founder
- 2014–2016MateApps GmbHCTO
Education
- 2023TU DarmstadtPh.D.
- 2017TU Dortmund UniversityM.Sc.
Sources and credits
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- Patrick Schramowski
- Mit Künstlicher Intelligenz gegen anstößige Inhalte – TU Darmstadt
- Tactful machines – TU Darmstadt
- LAION-5B: An open large-scale dataset for training next generation image-text models
- NeurIPS 2022 Awards
- Safe Latent Diffusion: Mitigating Inappropriate Degeneration in Diffusion Models
- LeoLM: Igniting German-Language LLM Research | LAION
- LlavaGuard: An Open VLM-based Framework for Safeguarding Vision Datasets and Models
- No Safe Dose: How Training Data Drives Unsafe Image Generation

