Robert Geislinger


2025

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BRIGHTER: BRIdging the Gap in Human-Annotated Textual Emotion Recognition Datasets for 28 Languages
Shamsuddeen Hassan Muhammad | Nedjma Ousidhoum | Idris Abdulmumin | Jan Philip Wahle | Terry Ruas | Meriem Beloucif | Christine de Kock | Nirmal Surange | Daniela Teodorescu | Ibrahim Said Ahmad | David Ifeoluwa Adelani | Alham Fikri Aji | Felermino D. M. A. Ali | Ilseyar Alimova | Vladimir Araujo | Nikolay Babakov | Naomi Baes | Ana-Maria Bucur | Andiswa Bukula | Guanqun Cao | Rodrigo Tufiño | Rendi Chevi | Chiamaka Ijeoma Chukwuneke | Alexandra Ciobotaru | Daryna Dementieva | Murja Sani Gadanya | Robert Geislinger | Bela Gipp | Oumaima Hourrane | Oana Ignat | Falalu Ibrahim Lawan | Rooweither Mabuya | Rahmad Mahendra | Vukosi Marivate | Alexander Panchenko | Andrew Piper | Charles Henrique Porto Ferreira | Vitaly Protasov | Samuel Rutunda | Manish Shrivastava | Aura Cristina Udrea | Lilian Diana Awuor Wanzare | Sophie Wu | Florian Valentin Wunderlich | Hanif Muhammad Zhafran | Tianhui Zhang | Yi Zhou | Saif M. Mohammad
Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)

People worldwide use language in subtle and complex ways to express emotions. Although emotion recognition–an umbrella term for several NLP tasks–impacts various applications within NLP and beyond, most work in this area has focused on high-resource languages. This has led to significant disparities in research efforts and proposed solutions, particularly for under-resourced languages, which often lack high-quality annotated datasets.In this paper, we present BRIGHTER–a collection of multi-labeled, emotion-annotated datasets in 28 different languages and across several domains. BRIGHTER primarily covers low-resource languages from Africa, Asia, Eastern Europe, and Latin America, with instances labeled by fluent speakers. We highlight the challenges related to the data collection and annotation processes, and then report experimental results for monolingual and crosslingual multi-label emotion identification, as well as emotion intensity recognition. We analyse the variability in performance across languages and text domains, both with and without the use of LLMs, and show that the BRIGHTER datasets represent a meaningful step towards addressing the gap in text-based emotion recognition.

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LECTURE4ALL: A Lightweight Approach to Precise Timestamp Detection in Online Lecture Videos
Viktoria Wrobel | Simon Kazemi | Frank Hammerschmidt | Torben Hannemann | Gregor Stange | Seid Muhie Yimam | Robert Geislinger
Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 3: System Demonstrations)

This paper presents LECTURE4ALL, a web application developed to improve the search experience of educational video platforms. Lecture2Go provides a vast collection of recorded lectures, but locating specific content within videos can be time-consuming. LECTURE4ALL addresses this issue by leveraging a vector database and a streamlined user interface to enable direct retrieval of precise video timestamps. By enhancing search accuracy and efficiency, LECTURE4ALL significantly improves the accessibility and usability of educational video platforms.

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HatePRISM: Policies, Platforms, and Research Integration. Advancing NLP for Hate Speech Proactive Mitigation
Naquee Rizwan | Seid Muhie Yimam | Daryna Dementieva | Dr. Florian Skupin | Tim Fischer | Daniil Moskovskiy | Aarushi Ajay Borkar | Robert Geislinger | Punyajoy Saha | Sarthak Roy | Martin Semmann | Alexander Panchenko | Chris Biemann | Animesh Mukherjee
Findings of the Association for Computational Linguistics: ACL 2025

Despite regulations imposed by nations and social media platforms, e.g. (Government of India, 2021; European Parliament and Council of the European Union, 2022), inter alia, hateful content persists as a significant challenge. Existing approaches primarily rely on reactive measures such as blocking or suspending offensive messages, with emerging strategies focusing on proactive measurements like detoxification and counterspeech. In our work, which we call HATEPRISM, we conduct a comprehensive examination of hate speech regulations and strategies from three perspectives: country regulations, social platform policies, and NLP research datasets. Our findings reveal significant inconsistencies in hate speech definitions and moderation practices across jurisdictions and platforms, alongside a lack of alignment with research efforts. Based on these insights, we suggest ideas and research direction for further exploration of a unified framework for automated hate speech moderation incorporating diverse strategies.

2024

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Concept Over Time Analysis: Unveiling Temporal Patterns for Qualitative Data Analysis
Tim Fischer | Florian Schneider | Robert Geislinger | Florian Helfer | Gertraud Koch | Chris Biemann
Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 3: System Demonstrations)

In this system demonstration paper, we present the Concept Over Time Analysis extension for the Discourse Analysis Tool Suite.The proposed tool empowers users to define, refine, and visualize their concepts of interest within an interactive interface. Adhering to the Human-in-the-loop paradigm, users can give feedback through sentence annotations. Utilizing few-shot sentence classification, the system employs Sentence Transformers to compute representations of sentences and concepts. Through an iterative process involving semantic similarity searches, sentence annotation, and fine-tuning with contrastive data, the model continuously refines, providing users with enhanced analysis outcomes. The final output is a timeline visualization of sentences classified to concepts. Especially suited for the Digital Humanities, Concept Over Time Analysis serves as a valuable tool for qualitative data analysis within extensive datasets. The chronological overview of concepts enables researchers to uncover patterns, trends, and shifts in discourse over time.

2023

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Multi-Modal Learning Application – Support Language Learners with NLP Techniques and Eye-Tracking
Robert Geislinger | Ali Ebrahimi Pourasad | Deniz Gül | Daniel Djahangir | Seid Muhie Yimam | Steffen Remus | Chris Biemann
Proceedings of the 1st Workshop on Linguistic Insights from and for Multimodal Language Processing

2022

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Improved Open Source Automatic Subtitling for Lecture Videos
Robert Geislinger | Benjamin Milde | Chris Biemann
Proceedings of the 18th Conference on Natural Language Processing (KONVENS 2022)