Open Thesis Topics

Students who are eager to develop their skills by doing a research-oriented thesis in our group should mail their interests to Suitable topic candidates are shown in the following list. Your own suggestions for topics are also welcome, for which you can draw inspiration from our recent publications.

  • Active Learning for Text Classification
  • Bringing Human Values to Argument Search
  • Classifying Occurence and Intensity of Triggering Imagery in Fiction
  • Constructing an Adversarial Retrieval Collection
  • Constructing and Analyzing a diverse Corpus of Machine-generated Text
  • Contrastive Ranking-Aware Learning of Representations for Retrieval
  • Creating a Topical Map of Servers and Actors on the Fediverse
  • Does Training Data from different Corpora benefit Learning-to-Rank?
  • Explain Google Rankings via Query Reformulation
  • Extreme Multi-Label Classification of German Book Titles
  • Facets of complexity in scholarly political language
  • Fine-granular and Web-scale Language Identification for Multi-lingual LLMs
  • Health-Related Queries in Large-Scale Query Logs
  • Implementing and Deploying Language Models for Context-sensitive Word Search
  • Jointly Learning Decoupled Bi-Encoder Representations for Retrieval
  • Logical Features of Neural Networks
  • Measuring the Correlation of the Effectivenes of Large Language Models and Retrievability
  • Mimicking Personas of Dialog Participants with Large Language Models
  • Multi-Task Learning with IR Axioms
  • Persuasive Argument Generation using Generative Adversarial Networks
  • Personalization Strategies for LLMS to reduce Harmful Content Generation
  • Psychological Features for Argumentation
  • Query Obfuscation for Dense Retrieval Models
  • Question Analytics of Conversational QA-Systems: A Gamified Study
  • Rating the Degree of Search Engine Optimization of Websites
  • Simplifying the language of political argumentation
  • Unraveling Argumentation Strategies through XAI Techniques

Open Student Assistant Topics

Students who want to improve their skills and work with us can apply for a position as a student assistant at We are currently looking for assistants to work on the following topics:

  • Analyzing and Tuning Chat Bots for Emotional Support Tasks

Ongoing Theses

  • Halle
    • Max Henze. Simulation von Suchanfragen durch Anchortext (supervised by Maik Fröbe, Sebastian Günther, and Matthias Hagen)
  • Jena
    • Lukas Zeit-Altpeter. Answering Open-Ended Health-Related Questions based on Trusted Sources (supervised by Jan Heinrich Reimer, Alexander Bonarenko, and Matthias Hagen)
    • Felix Juch. Weather Event Extraction from Tweets (supervised by Matti Wiegmann)
  • Leipzig
    • Pierre Achkar. Classification of Multimodal Social Media Posts (supervised by Tim Gollub)
    • Yannick Brenning. Active Learning for Text Classification (supervised by Christian Kahmann and Christopher Schröder)
    • Nicolaus Schlegel. Incorporating Knowledge Graph Embeddings in Large Language Models (supervised by Ferdinand Schlatt)
    • Jonas Probst. Implicit Evaluation of Health Answers from Large Generative Text Models (supervised by Sebastian Schmidt, Harry Scells)
    • Dinara Imambayeva. Improving Compositionality of Images Generated by Stable Diffusion (supervised by Niklas Deckers)
    • Hassan Jbara. Text-Conditioned Generation of SVG Images (supervised by Niklas Deckers and Lukas Gienapp)
    • Janko Götze. Cross-domain Counterargument Retrieval using Large Language Models (supervised by Nailia Mirzakhmedova, Johannes Kiesel)
    • Marvin Vogel. Axiomatic Re-ranking for Argument Search (supervised by Maximilian Heinrich, Johannes Kiesel, Alexander Bondarenko)
    • Ruben Kohlmeyer. Probing Large Language Models for Causal Knowledge (supervised by Ferdinand Schlatt)
    • Julia Peters. Manipulating Embeddings of Stable Diffusion Prompts (supervised by Niklas Deckers)
    • Thilo Brummerloh. Extracting Large-Scale Multimodal Datasets From Web Archives (supervised by Niklas Deckers)
    • Pia Sülzle. Detecting Hidden Meaning in Stock Images (supervised by Niklas Deckers)
    • Marc-Pascal Richter. Normdaten-Disambiguierung und Reconciliation auf Korpusdaten (supervised by Erik Körner, Felix Helfer)
    • Dominik Schwabe. Unsupervised Frame Identification in Argumentative Discussions (supervised by Shahbaz Syed and Khalid Al-Khatib)
    • Ahmad Dawar Hakimi. Contextualized Summarization of Scholarly Documents (supervised by Shahbaz Syed and Khalid Al-Khatib)
    • Deniz Simsek. Verbalizing Entity-based Answers in Conversational QA-Systems (supervised by Marcel Gohsen and Johannes Kiesel)
    • Moritz Brunsch. Multi-Label Active Learning with Many Irrelevant Examples (supervised by Christopher Schröder)
    • Nils Schröder. Short Text Classification (supervised by Christian Kahmann and Christopher Schröder)
    • Karl Hase. Statistical Bootstrap Tests with Redundant Data (supervised by Maik Fröbe)
    • Simon Reich. Integrating Information Retrieval Toolkits into TIRA (supervised by Maik Fröbe and Jan Heinrich Reimer)
    • Jennifer Rakete. Bootstrapping Training Data for Sentence-Level Trigger Detection (supervised by Matti Wiegmann and Magdalena Wolska)
  • Weimar
    • Islam Torky. Retrieval Augmented Generation for the IR-Anthology (supervised by Tim Gollub)
    • Alban Bruder. Interacting with a Multi-User Voice Search in VR (supervised by Johannes Kiesel and Marcel Gohsen)
    • Kshitij Pandit. Mining Linked Data on Web Scale (supervised by Nikolay Kolyada)
    • Nicola Libera. Assessing the Quality of Comparative Review Webpages (supervised by Matti Wiegmann and Janek Bevendorff)
    • Ludwig Lorenz. Searching Personal Web Archives (supervised by Johannes Kiesel)

Resources for Students


Dear prospective PhD student, unsolicited applications to the Webis group ( are welcome. However, we cannot promise that open positions are available at the time of your application.

The Webis Group is a tightly cooperating research network, formed by computer science chairs at the universities of Groningen, Hannover, Jena, Leipzig, and Weimar. Our mission is to tackle challenges of the information society by conducting basic and applied research with the goal of prototyping and evaluating future information systems. We are an experienced research group where team spirit and active collaboration has top priority. We are looking for open-minded graduates and PhDs who want to develop both as a researcher and as a person. The working language of our group is English; fluency in German is not required.

Interested students should have finished either a master or a PhD in computer science, mathematics, or a related field with excellent or very good grades. A solid background in mathematics and statistics is expected—as well as very good programming skills.

Benno Stein
Bauhaus-Universität Weimar
On behalf of the Webis group