12 papers
Towards Full-Text Scholarly Argument Mining using Entity-Anchored Claim Extraction
Bhuvanesh Verma, Andy Lüking, Mounika Marreddy +2
Argument mining in full-text scholarly articles remains an important yet challenging task. This difficulty stems not only from the need to model long-distance dependencies but also…
InterView-C: A Synchronized Multimodal Corpus of VR Avatar-Mediated Survey Interviews
Patrick Schrottenbacher, Leon Hammerla, Lydia Kleine +2
We present InterView-C, a German multimodal corpus of 27 survey interviews conducted entirely in virtual reality, with both interlocutors represented by avatars. The corpus aligns…
TTLab at Daleel 2026: STAR-Ar, Sequence Tagging for Argument Recognition in Arabic
Bhuvanesh Verma, Ali Abusaleh, Alexander Mehler
Argument Mining (AM) is a critical NLP task that remains significantly under-resourced in Arabic. This paper presents $\testtt{STAR-Ar}$, a BERT-BiLSTM-CRF architecture for argumen…
TTLab at StanceEval-2026: A Cloze-Style Prompting Approach for Arabic-Language Stance Detection (CLASP-Ar)
Bhuvanesh Verma, Ali Abusaleh, Alexander Mehler
Arabic-language stance detection remains challenging, and previous shared-task systems have largely relied on multitask learning and ensembles. While these systems achieve state-of…
TTLab at AlexandriaX-2026: A Fine-Tuned Surface Tagger for Arabic Machine-Translation Error-Span Detection and Classification
Ali Abusaleh, Bhuvanesh Verma, Alexander Mehler
We present TTLab's submission to the AlexandriaX-2026 Subtask~3 on Arabic MT error span detection and classification. Our system frames the task as token-level classification over…
Negation Beyond the Verbal Channel: Temporal Multimodal Correlates in Dialogue
Leon Hammerla, Patrick Schrottenbacher, Alexander Mehler
Negation is typically modeled through its linguistic realization, although spoken interaction is accompanied by tightly coordinated nonverbal behavior. We ask whether contexts cent…
From Retrieval to Weights: Parametric Individualization of Small Language Models with Individual Text Corpora
Christoph Wigbels, Ali Abusaleh, Markus T. Jansen +2
We approach a cognitive simulation perspective on episodic and semantic memory in multiple-choice question answering by incorporating text from individual text corpora (ITC) into r…
Learning to Detect Cross-Modal Negation: An Analysis of Latent Representations and an Attention-Based Solution
Ali AbuSaleh, Leon Hammerla, Alexander Mehler
Detecting high-level semantic concepts like negation across modalities remains a challenge for current multimodal systems. We analyze this as a fundamental representation learning…
MMTM: Tri-Modal Topic Modeling for Long-Form Video via Similarity-Gated Fusion
Ali Abusaleh, Bhuvanesh Verma, Alexander Mehler
We introduce MMTM, a modular pipeline for topic discovery in long-form video that integrates speech recognition, audio and visual embeddings, and BERTopic clustering through a dete…
From Early Encoding to Late Suppression: Interpreting LLMs on Character Counting Tasks
Ayan Datta, Mounika Marreddy, Alexander Mehler +2
Large language models (LLMs) exhibit failures on elementary symbolic tasks such as character counting in a word, despite excelling on complex benchmarks. Although this limitation h…
You Shall Know a Tool by the Traces it Leaves: The Predictability of Sentiment Analysis Tools
Daniel Baumartz, Mevlüt Bagci, Alexander Henlein +3
If sentiment analysis tools were valid classifiers, one would expect them to provide comparable results for sentiment classification on different kinds of corpora and for different…
The Spatial Semantics of Iconic Gesture
Andy Lücking, Alexander Henlein, Alexander Mehler
The current multimodal turn in linguistic theory leaves a crucial question unanswered: what is the meaning of iconic gestures, and how does it compose with speech meaning? We argue…