Hello there! I’m a Senior Researcher at the Institute for Artificial Intelligence, University of Stuttgart, working with Prof. Dr. Steffen Staab.
My research interests include Graph Foundation Models, Geometric Deep Learning, Generative AI, Knowledge Graph Analysis, Large Language Models, Agentic AI, and Semantic‑guided Deep Learning. I am passionate about exploring both the theoretical foundations and practical applications of AI.
Feel free to reach out at my email if you’d like to discuss ideas!
Updates
June 2023 – Present:
Senior Researcher, Institute for Artificial Intelligence, University of Stuttgart (Advisor: Prof. Dr. Steffen Staab).
June 2021 – Present:
Ph.D. in Computer Science, University of Stuttgart (Supervisor: Prof. Dr. Steffen Staab; Thesis: “Pattern‑aware
Knowledge Graph Embeddings”).
Mar 2018 – Dec 2021:
Researcher, Smart Data Analytics, Department of Computer Science, University of Bonn.
Selected Publications
- Mojtaba Nayyeri, Sahar Vahdati, Can Aykul, and Jens Lehmann. 2021. 5* Knowledge Graph Embeddings with Projective Transformations . Proc. of the 35th AAAI Conference on Artificial Intelligence, 35(10):9064–9072. doi:10.1609/aaai.v35i10.17095
- Jiaxin Pan, Mojtaba Nayyeri, Osama Mohammed, Daniel Hernandez, Rongchuan Zhang, Cheng Cheng, and Steffen Staab. 2025. Towards Foundation Model on Temporal Knowledge Graph Reasoning . arXiv:2506.06367. doi:10.48550/arXiv.2506.06367
- Anna‑Maria Halacheva, Mojtaba Nayyeri, and Steffen Staab. 2024. Expanding Expressivity in Transformer Models with MöbiusAttention . arXiv:2409.12175. doi:10.48550/arXiv.2409.12175
- Mojtaba Nayyeri, Chengjin Xu, Franca Hoffmann, Mirza Mohtashim Alam, Jens Lehmann, and Sahar Vahdati. 2021. Knowledge Graph Representation Learning using Ordinary Differential Equations . Proc. of EMNLP 2021, pages 9529–9548. doi:10.18653/v1/2021.emnlp-main.750
- Mojtaba Nayyeri, Chengjin Xu, Mirza Mohtashim Alam, Jens Lehmann, Hamed Shariat Yazdi. 2025. LogicENN: A neural based knowledge graphs embedding model with logical rules . IEEE Transactions on Pattern Analysis and Machine Intelligence, 7050–7062. doi:10.1109/TPAMI.2021.3121646
- Bo Xiong, Mojtaba Nayyeri, Shirui Pan, and Steffen Staab. 2023. Shrinking Embeddings for Hyper-Relational Knowledge Graphs . Proc. of ACL 2023 (Long Papers), pages 13306–13320. doi:10.18653/v1/2023.acl-long.743
- Jiaxin Pan, Mojtaba Nayyeri, Yinan Li, and Steffen Staab. 2024. HGE: Embedding Temporal Knowledge Graphs in a Product Space of Heterogeneous Geometric Subspaces . Proc. of AAAI-24, 38(8):8913–8920. doi:10.1609/aaai.v38i8.28739
- Bo Xiong, Mojtaba Nayyeri, Linhao Luo, Zihao Wang, Shirui Pan, and Steffen Staab. 2024. NestE: Modeling Nested Relational Structures for Knowledge Graph Reasoning . Proc. of AAAI-24, 38(8):1–13. doi:10.1609/aaai.v38i8.28772
- Arvindh Arun, Sumit Kumar, Mojtaba Nayyeri, Bo Xiong, Ponnurangam Kumaraguru, Antonio Vergari, and Steffen Staab. 2025. SEMMA: A Semantic Aware Knowledge Graph Foundation Model . arXiv:2505.20422. doi:10.48550/arXiv.2505.20422