Papers by Nils Lukas
SD-E2: Semantic Exploration for Reasoning Under Token Budgets (2026.findings-eacl)
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| Challenge: | Small language models struggle with complex reasoning because exploration is expensive under tight compute budgets. |
| Approach: | They propose a framework that makes exploration explicit by optimizing semantic diversity in generated reasoning trajectories. |
| Outcome: | The proposed framework surpasses Qwen2.5-3B-Instruct and strong GRPO baselines on GSM8K and improves on the harder AIME benchmark to 13.28% vs. base 6.74%. |
Forest Before Trees: Latent Superposition for Efficient Visual Reasoning (2026.acl-long)
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| Challenge: | Recent latent reasoning methods suffer from a bandwidth bottleneck . explicit textual rationales suffer from premature semantic collapse . |
| Approach: | They propose a new paradigm that reformulates visual deduction via Dynamic Windowed Alignment Learning. |
| Outcome: | The proposed paradigm achieves state-of-the-art performance among latent reasoning methods surpassing the strong baseline Monet by 5.03% on average. |
European Language Grid: A Joint Platform for the European Language Technology Community (2021.eacl-demos)
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Georg Rehm, Stelios Piperidis, Kalina Bontcheva, Jan Hajic, Victoria Arranz, Andrejs Vasiļjevs, Gerhard Backfried, Jose Manuel Gomez-Perez, Ulrich Germann, Rémi Calizzano, Nils Feldhus, Stefanie Hegele, Florian Kintzel, Katrin Marheinecke, Julian Moreno-Schneider, Dimitris Galanis, Penny Labropoulou, Miltos Deligiannis, Katerina Gkirtzou, Athanasia Kolovou, Dimitris Gkoumas, Leon Voukoutis, Ian Roberts, Jana Hamrlova, Dusan Varis, Lukas Kacena, Khalid Choukri, Valérie Mapelli, Mickaël Rigault, Julija Melnika, Miro Janosik, Katja Prinz, Andres Garcia-Silva, Cristian Berrio, Ondrej Klejch, Steve Renals
| Challenge: | Europe is a multilingual society, in which dozens of languages are spoken. |
| Approach: | They describe the European Language Grid, which is targeted to evolve into the primary platform and marketplace for LT in Europe by providing one umbrella platform for the European LT landscape. |
| Outcome: | The European Language Grid (ELG) will provide access to 1300 services for all European languages as well as thousands of data sets. |
Detecting AI-Generated Video: A Vision–Language Dual-View Survey (2026.findings-acl)
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| Challenge: | realism of AI-generated Videos (AIGC-V) rendering artifact-centric detection insufficient, authors argue . a vision–language dual-view taxonomy is proposed to systematize this rapidly evolving field . |
| Approach: | They propose a Vision–Language Dual-View taxonomy to systematize AIGC-V detection . they propose realism of AI-generated Videos is rendering traditional inspection insufficient . |
| Outcome: | The proposed model aims to show that the existing methods are consistent with real-world facts. |
SPIRIT: Patching Speech Language Models against Jailbreak Attacks (2025.emnlp-main)
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| Challenge: | Speech language models (SLMs) enable natural interactions via spoken instructions, which more effectively capture user intent by detecting nuances in speech. |
| Approach: | They propose post-hoc patching defenses to intervene during inference by modifying the SLM’s activations that improve robustness up to 99% with negligible impact on utility and without any re-training. |
| Outcome: | The proposed defenses improve robustness up to 99% with negligible impact on utility and (ii) without any re-training. |