Simon Ostermann

According to our database, Simon Ostermann authored at least 66 papers between 2013 and 2026.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2026

The Latin Substrate: How Language Models Represent and Mediate Script Choice.

Daniil Gurgurov, Alan Saji, Katharina Trinley, Josef van Genabith, Simon Ostermann

CoRR, May, 2026

DFKI-MLT at SemEval-2026 TASK 7: Steering Multilingual Models Towards Cultural Knowledge.

Yusser Al Ghussin, Daniil Gurgurov, Yasser Hamidullah, Josef van Genabith, Cristina España-Bonet, Simon Ostermann

CoRR, May, 2026

Multilingual Steering by Design: Multilingual Sparse Autoencoders and Principled Layer Selection.

Yusser Al Ghussin, Daniil Gurgurov, Tanja Baeumel, Josef van Genabith, Patrick Schramowski, Simon Ostermann

CoRR, May, 2026

Judge Circuits.

Nils Feldhus, Tanja Baeumel, Elena Golimblevskaia, Qianli Wang, Van Bach Nguyen, Aaron Louis Eidt, Selin Kahvecioglu, Christopher Ebert, Wojciech Samek, Jing Yang, Vera Schmitt, Sebastian Möller, Simon Ostermann

CoRR, May, 2026

Enhancing Multilingual Counterfactual Generation through Alignment-as-Preference Optimization.

Yilong Wang, Qianli Wang, Bohao Chu, Yihong Liu, Jing Yang, Simon Ostermann

CoRR, May, 2026

DualFact+: A Multimodal Fact Verification Framework for Procedural Video Understanding.

Cennet Oguz, Yasser Hamidullah, Josef van Genabith, Simon Ostermann

CoRR, April, 2026

Why Does Reinforcement Learning Generalize? A Feature-Level Mechanistic Study of Post-Training in Large Language Models.

Dan Shi, Zhuowen Han, Simon Ostermann, Renren Jin, Josef van Genabith, Deyi Xiong

CoRR, April, 2026

Disentangling Mathematical Reasoning in LLMs: A Methodological Investigation of Internal Mechanisms.

Tanja Baeumel, Josef van Genabith, Simon Ostermann

CoRR, April, 2026

From Weights to Activations: Is Steering the Next Frontier of Adaptation?

Simon Ostermann, Daniil Gurgurov, Tanja Baeumel, Michael A. Hedderich, Sebastian Lapuschkin, Wojciech Samek, Vera Schmitt

CoRR, April, 2026

ReasonXL: Shifting LLM Reasoning Language Without Sacrificing Performance.

Daniil Gurgurov, Tom Röhr, Sebastian von Rohrscheidt, Josef van Genabith, Alexander Löser, Simon Ostermann

CoRR, April, 2026

CLaS-Bench: A Cross-Lingual Alignment and Steering Benchmark.

Daniil Gurgurov, Yusser Al Ghussin, Tanja Baeumel, Cheng-Ting Chou, Patrick Schramowski, Marius Mosbach, Josef van Genabith, Simon Ostermann

CoRR, January, 2026

Can Large Language Models Still Explain Themselves? Investigating the Impact of Quantization on Self-Explanations.

Qianli Wang, Nils Feldhus, Pepa Atanasova, Fedor Splitt, Simon Ostermann, Sebastian Möller, Vera Schmitt

CoRR, January, 2026

Assessing Web Search Credibility and Response Groundedness in Chat Assistants.

Ivan Vykopal, Matús Pikuliak, Simon Ostermann, Marián Simko

Proceedings of the 19th Conference of the European Chapter of the Association for Computational Linguistics, 2026

2025

Sparse Subnetwork Enhancement for Underrepresented Languages in Large Language Models.

Daniil Gurgurov, Josef van Genabith, Simon Ostermann

CoRR, October, 2025

Cross-Prompt Encoder for Low-Performing Languages.

Beso Mikaberidze, Teimuraz Saghinadze, Simon Ostermann, Philipp Müller

CoRR, August, 2025

The AI Language Proficiency Monitor - Tracking the Progress of LLMs on Multilingual Benchmarks.

David Pomerenke, Jonas Nothnagel, Simon Ostermann

CoRR, July, 2025

OpenFActScore: Open-Source Atomic Evaluation of Factuality in Text Generation.

Lucas Fonseca Lage, Simon Ostermann

CoRR, July, 2025

On Multilingual Encoder Language Model Compression for Low-Resource Languages.

Daniil Gurgurov, Michal Gregor, Josef van Genabith, Simon Ostermann

CoRR, May, 2025

Through a Compressed Lens: Investigating the Impact of Quantization on LLM Explainability and Interpretability.

Qianli Wang, Mingyang Wang, Nils Feldhus, Simon Ostermann, Yuan Cao, Hinrich Schütze, Sebastian Möller, Vera Schmitt

CoRR, May, 2025

AutoPsyC: Automatic Recognition of Psychodynamic Conflicts from Semi-structured Interviews with Large Language Models.

Sayed Muddashir Hossain, Simon Ostermann, Patrick Gebhard, Cord Benecke, Josef van Genabith, Philipp Müller

CoRR, March, 2025

SemEval-2025 Task 7: Multilingual and Crosslingual Fact-Checked Claim Retrieval.

Qiwei Peng, Róbert Móro, Michal Gregor, Ivan Srba, Simon Ostermann, Marián Simko, Juraj Podrouzek, Matús Mesarcík, Jaroslav Kopcan, Anders Søgaard

Dataset, March, 2025

The Lookahead Limitation: Why Multi-Operand Addition is Hard for LLMs.

Tanja Baeumel, Josef van Genabith, Simon Ostermann

CoRR, February, 2025

Reverse Probing: Evaluating Knowledge Transfer via Finetuned Task Embeddings for Coreference Resolution.

Tatiana Anikina, Arne Binder, David Harbecke, Stalin Varanasi, Leonhard Hennig, Simon Ostermann, Sebastian Möller, Josef van Genabith

CoRR, January, 2025

Saarland-Groningen at NADI 2025 Shared Task: Effective Dialectal Arabic Speech Processing under Data Constraints.

Badr M. Abdullah, Yusser Al Ghussin, Zena Al-Khalili, Ömer Tarik Özyilmaz, Matias Valdenegro-Toro, Simon Ostermann, Dietrich Klakow

Proceedings of The Third Arabic Natural Language Processing Conference: ArabicNLP 2025, 2025

SemEval-2025 Task 7: Multilingual and Crosslingual Fact-Checked Claim Retrieval.

Qiwei Peng, Róbert Móro, Michal Gregor, Ivan Srba, Simon Ostermann, Marián Simko, Juraj Podrouzek, Matús Mesarcík, Jaroslav Kopcan, Anders Søgaard

Proceedings of the 19th International Workshop on Semantic Evaluation, 2025

Task Prompt Vectors: Effective Initialization Through Multi-task Soft Prompt Transfer.

Róbert Belanec, Simon Ostermann, Ivan Srba, Mária Bieliková

Proceedings of the Machine Learning and Knowledge Discovery in Databases. Research Track and Applied Data Science Track, 2025

Soft Language Prompts for Language Transfer.

Ivan Vykopal, Simon Ostermann, Marián Simko

Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies, 2025

GrEmLIn: A Repository of Green Baseline Embeddings for 87 Low-Resource Languages Injected with Multilingual Graph Knowledge.

Daniil Gurgurov, Rishu Kumar, Simon Ostermann

Proceedings of the Findings of the Association for Computational Linguistics: NAACL 2025, Albuquerque, New Mexico, USA, April 29, 2025

Building Common Ground in Dialogue: A Survey.

Tatiana Anikina, Alina Leippert, Simon Ostermann

Proceedings of the 2nd Language Understanding in the Human-Machine Era Workshop, 2025

Cross-Prompt Encoder for Low-Performing Languages.

Beso Mikaberidze, Temo Saghinadze, Simon Ostermann, Philipp Matthias Müller

Proceedings of the 14th International Joint Conference on Natural Language Processing and the 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics, 2025

Multilingual Political Views of Large Language Models: Identification and Steering.

Daniil Gurgurov, Katharina Trinley, Ivan Vykopal, Josef van Genabith, Simon Ostermann, Roberto Zamparelli

Proceedings of the 14th International Joint Conference on Natural Language Processing and the 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics, 2025

Language Arithmetics: Towards Systematic Language Neuron Identification and Manipulation.

Daniil Gurgurov, Katharina Trinley, Yusser Al Ghussin, Tanja Baeumel, Josef van Genabith, Simon Ostermann

Proceedings of the 14th International Joint Conference on Natural Language Processing and the 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics, 2025

Modular Arithmetic: Language Models Solve Math Digit by Digit.

Tanja Baeumel, Daniil Gurgurov, Yusser Al Ghussin, Josef van Genabith, Simon Ostermann

Proceedings of the 14th International Joint Conference on Natural Language Processing and the 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics, 2025

Multilingual Datasets for Custom Input Extraction and Explanation Requests Parsing in Conversational XAI Systems.

Qianli Wang, Tatiana Anikina, Nils Feldhus, Simon Ostermann, Fedor Splitt, Jiaao Li, Yoana Tsoneva, Sebastian Möller, Vera Schmitt

Proceedings of the Findings of the Association for Computational Linguistics: EMNLP 2025, 2025

Large Language Models for Multilingual Previously Fact-Checked Claim Detection.

Ivan Vykopal, Matús Pikuliak, Simon Ostermann, Tatiana Anikina, Michal Gregor, Marián Simko

Proceedings of the Findings of the Association for Computational Linguistics: EMNLP 2025, 2025

A Rigorous Evaluation of LLM Data Generation Strategies for Low-Resource Languages.

Tatiana Anikina, Ján Cegin, Jakub Simko, Simon Ostermann

Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing, 2025

Cross-Refine: Improving Natural Language Explanation Generation by Learning in Tandem.

Qianli Wang, Tatiana Anikina, Nils Feldhus, Simon Ostermann, Sebastian Möller, Vera Schmitt

Proceedings of the 31st International Conference on Computational Linguistics, 2025

dfkinit2b at CheckThat! 2025: Leveraging LLMs and Ensemble of Methods for Multilingual Claim Normalization.

Tatiana Anikina, Ivan Vykopal, Sebastian Kula, Ravi Kiran Chikkala, Natalia Skachkova, Jing Yang, Veronika Solopova, Vera Schmitt, Simon Ostermann

Proceedings of the Working Notes of the Conference and Labs of the Evaluation Forum, 2025

FitCF: A Framework for Automatic Feature Importance-guided Counterfactual Example Generation.

Qianli Wang, Nils Feldhus, Simon Ostermann, Luis Felipe Villa-Arenas, Sebastian Möller, Vera Schmitt

Proceedings of the Findings of the Association for Computational Linguistics, 2025

Only for the Unseen Languages, Say the Llamas: On the Efficacy of Language Adapters for Cross-lingual Transfer in English-centric LLMs.

Julian Schlenker, Jenny Kunz, Tatiana Anikina, Günter Neumann, Simon Ostermann

Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 4: Student Research Workshop), 2025

Small Models, Big Impact: Efficient Corpus and Graph-Based Adaptation of Small Multilingual Language Models for Low-Resource Languages.

Daniil Gurgurov, Ivan Vykopal, Josef van Genabith, Simon Ostermann

Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 4: Student Research Workshop), 2025

2024

LowREm: A Repository of Word Embeddings for 87 Low-Resource Languages Enhanced with Multilingual Graph Knowledge.

Daniil Gurgurov, Rishu Kumar, Simon Ostermann

CoRR, 2024

Probing Context Localization of Polysemous Words in Pre-trained Language Model Sub-Layers.

Soniya Vijayakumar, Josef van Genabith, Simon Ostermann

CoRR, 2024

Soft Begging: Modular and Efficient Shielding of LLMs against Prompt Injection and Jailbreaking based on Prompt Tuning.

Simon Ostermann, Kevin Baum, Christoph Endres, Julia Masloh, Patrick Schramowski

CoRR, 2024

Generative Large Language Models in Automated Fact-Checking: A Survey.

Ivan Vykopal, Matús Pikuliak, Simon Ostermann, Marián Simko

CoRR, 2024

Adapting Multilingual LLMs to Low-Resource Languages with Knowledge Graphs via Adapters.

Daniil Gurgurov, Mareike Hartmann, Simon Ostermann

CoRR, 2024

HybridBERT - Making BERT Pretraining More Efficient Through Hybrid Mixture of Attention Mechanisms.

Gokul Srinivasagan, Simon Ostermann

Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies: Student Research Workshop, 2024

UoM-DFKI submission to the low resource shared task.

Rishu Kumar, Aiden Williams, Claudia Borg, Simon Ostermann

Proceedings of the 21st International Conference on Spoken Language Translation, 2024

A Comparison of Different Tokenization Methods for the Georgian Language.

Beso Mikaberidze, Temo Saghinadze, Guram Mikaberidze, Raphael Kalandadze, Konstantine Pkhakadze, Josef van Genabith, Simon Ostermann, Lonneke van der Plas, Philipp Müller

Proceedings of the 7th International Conference on Natural Language and Speech Processing, 2024

CoXQL: A Dataset for Parsing Explanation Requests in Conversational XAI Systems.

Qianli Wang, Tatiana Anikina, Nils Feldhus, Simon Ostermann, Sebastian Möller

Proceedings of the Findings of the Association for Computational Linguistics: EMNLP 2024, 2024

MMAR: Multilingual and Multimodal Anaphora Resolution in Instructional Videos.

Cennet Oguz, Pascal Denis, Simon Ostermann, Emmanuel Vincent, Natalia Skachkova, Josef van Genabith

Proceedings of the Findings of the Association for Computational Linguistics: EMNLP 2024, 2024

KI-basierte Analyse von E-Portfolios.

Alexander Gantikow, Sara Durski, Andreas Isking, Paul Libbrecht, Wolfgang Müller, Simon Ostermann, Sandra Rebholz

Proceedings of the DELFI 2024, 2024

Common European Language Data Space.

Georg Rehm, Stelios Piperidis, Khalid Choukri, Andrejs Vasiljevs, Katrin Marheinecke, Victoria Arranz, Aivars Berzins, Miltos Deligiannis, Dimitris Galanis, Maria Giagkou, Katerina Gkirtzou, Dimitris Gkoumas, Annika Grützner-Zahn, Athanasia Kolovou, Penny Labropoulou, Andis Lagzdins, Elena Leitner, Valérie Mapelli, Hélène Mazo, Simon Ostermann, Stefania Racioppa, Mickaël Rigault, Leon Voukoutis

Proceedings of the 2024 Joint International Conference on Computational Linguistics, 2024

DFKI-MLST at DialAM-2024 Shared Task: System Description.

Arne Binder, Tatiana Anikina, Leonhard Hennig, Simon Ostermann

Proceedings of the 11th Workshop on Argument Mining, ArgMining 2024, Bangkok, Thailand, 2024

2023

Where exactly does contextualization in a PLM happen?

Soniya Vijayakumar, Tanja Bäumel, Simon Ostermann, Josef van Genabith

CoRR, 2023

Find-2-Find: Multitask Learning for Anaphora Resolution and Object Localization.

Cennet Oguz, Pascal Denis, Emmanuel Vincent, Simon Ostermann, Josef van Genabith

Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing, 2023

Investigating the Encoding of Words in BERT's Neurons Using Feature Textualization.

Tanja Baeumel, Soniya Vijayakumar, Josef van Genabith, Guenter Neumann, Simon Ostermann

Proceedings of the 6th BlackboxNLP Workshop: Analyzing and Interpreting Neural Networks for NLP, 2023

2019

MCScript2.0: A Machine Comprehension Corpus Focused on Script Events and Participants.

Simon Ostermann, Michael Roth, Manfred Pinkal

Proceedings of the Eighth Joint Conference on Lexical and Computational Semantics, 2019

2018

SemEval-2018 Task 11: Machine Comprehension Using Commonsense Knowledge.

Simon Ostermann, Michael Roth, Ashutosh Modi, Stefan Thater, Manfred Pinkal

Proceedings of The 12th International Workshop on Semantic Evaluation, 2018

Mapping Texts to Scripts: An Entailment Study.

Simon Ostermann, Hannah Seitz, Stefan Thater, Manfred Pinkal

Proceedings of the Eleventh International Conference on Language Resources and Evaluation, 2018

MCScript: A Novel Dataset for Assessing Machine Comprehension Using Script Knowledge.

Simon Ostermann, Ashutosh Modi, Michael Roth, Stefan Thater, Manfred Pinkal

Proceedings of the Eleventh International Conference on Language Resources and Evaluation, 2018

2017

Aligning Script Events with Narrative Texts.

Simon Ostermann, Michael Roth, Stefan Thater, Manfred Pinkal

Proceedings of the 6th Joint Conference on Lexical and Computational Semantics, 2017

2016

InScript: Narrative texts annotated with script information.

Ashutosh Modi, Tatiana Anikina, Simon Ostermann, Manfred Pinkal

Proceedings of the Tenth International Conference on Language Resources and Evaluation LREC 2016, 2016

2015

Annotating Entailment Relations for Shortanswer Questions.

Simon Ostermann, Andrea Horbach, Manfred Pinkal

Proceedings of the 2nd Workshop on Natural Language Processing Techniques for Educational Applications, 2015

2014

CSGS: Adapting a Short Answer Scoring System for Multiple-choice Reading Comprehension Exercises.

Simon Ostermann, Nikolina Koleva, Alexis Palmer, Andrea Horbach

Proceedings of the Working Notes for CLEF 2014 Conference, 2014

2013

Ingredients and Recipe for a Robust Mobile Speech-Enabled Cooking Assistant for German.

Ulrich Schäfer, Frederik Arnold, Simon Ostermann, Saskia Reifers

Proceedings of the KI 2013: Advances in Artificial Intelligence, 2013