Malte Ostendorff2023-05-31T03:37:06+02:00

Dr. Malte Ostendorff

Senior Researcher for Natural Language Processing

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In my research work, I mainly focus on information retrieval, recommender systems, and natural language processing. In particular, techniques for the information extraction from unstructured data such as text and making information more accessible are of great interest for me. In my recent work I apply these techniques on content from the legal domain, e.g. laws, patents, case files. Moreover, I explore how recommender systems can assist users in finding relevant information to cope with today’s information overload. Due to the large amounts of available data, all my work requires the use of scalable and distributed computing. Generally speaking, all topics that are somehow related to the following fields can be considered as my research interest:

  • Recommender Systems
  • Natural Language Processing
  • Large Language Models
  • Text Mining
  • Applied Machine Learning
  • Scalable Data Processing (“Big Data”)
  • Legal Tech

I am also affiliated with the German Research Center for Artificial Intelligence (DFKI). Aside from my research activities, I founded the non-profit initiative Open Legal Data that provides free access to legal documents such as law text and court decisions.


Feel free to contact me if you have any questions regarding my work. I am always open for new ideas, projects and collaborations with other researchers and students.


The slides here are the examples of the projects available for student projects.


Malte Ostendorff

Papendiek 14
37073 Göttingen

Office: SUB Historic Building 0.211

Project websites

Social Network Profiles


Additional information on my research can be found in the corresponding publications.

  1. Citolytics: A Link-based Recommender System for Wikipedia
    Schwarzer, M., Breitinger, C., Schubotz, M., Meuschke, N., & Gipp, B.
    In Proceedings of the Eleventh ACM Conference on Recommender Systems, ACM, 2017
  2. Evaluating link-based recommendations for Wikipedia
    Schwarzer, M., Schubotz, M., Meuschke, N., Breitinger, C., Markl, V., & Gipp, B.
    In Proceedings of the 16th ACM/IEEE-CS on Joint Conference on Digital Libraries, ACM, 2016
  3. Aspect-based Document Similarity for Research Papers
    M. Ostendorff, T. Ruas, T. Blume, B. Gipp, and G. Rehm
    In Proceedings of the 28th International Conference on Computational Linguistics (COLING 2020), 2020


Project ‘Open Legal Data’ wins faculty4makers Challenge 2017/18

The project founded by our group member (doctoral researcher) Malte Schwarzer has won the 1st price of this year’s faculty4makers challenge. The competition was organized by Technische Universität Berlin for DIY-projects that students carry out in their spare time outside of the [...]

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