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Chris Biemann

25 accepted papers

2025

Centurio: On Drivers of Multilingual Ability of Large Vision-Language Model

ACL 2025long

Most Large Vision-Language Models (LVLMs) to date are trained predominantly on English data, which makes them struggle to understand non-English input and fail to generate output in the desired target language. Existing efforts mitigate these issues by adding multilingual training data, but do so in…

Cited by 0SourcePDFScholar
2025

Chinese Toxic Language Mitigation via Sentiment Polarity Consistent Rewrites

EMNLP 2025

Detoxifying offensive language while preserving the speaker’s original intent is a challenging yet critical goal for improving the quality of online interactions. Although large language models (LLMs) show promise in rewriting toxic content, they often default to overly polite rewrites, distorting t

2025

CogSteer: Cognition-Inspired Selective Layer Intervention for Efficiently Steering Large Language Models

ACL 2025finding

Large Language Models (LLMs) achieve remarkable performance through pretraining on extensive data. This enables efficient adaptation to diverse downstream tasks. However, the lack of interpretability in their underlying mechanisms limits the ability to effectively steer LLMs for specific application…

2025

CompUGE-Bench: Comparative Understanding and Generation Evaluation Benchmark for Comparative Question Answering

COLING 2025system demonstrations

This paper presents CompUGE, a comprehensive benchmark designed to evaluate Comparative Question Answering (CompQA) systems. The benchmark is structured around four core tasks: Comparative Question Identification, Object and Aspect Identification, Stance Classification, and Answer Generation. It uni…

2025

GIMMICK: Globally Inclusive Multimodal Multitask Cultural Knowledge Benchmarking

ACL 2025finding

Large Vision-Language Models (LVLMs) have recently gained attention due to their distinctive performance and broad applicability. While it has been previously shown that their efficacy in usage scenarios involving non-Western contexts falls short, existing studies are limited in scope, covering just…

2025

HatePRISM: Policies, Platforms, and Research Integration. Advancing NLP for Hate Speech Proactive Mitigation

ACL 2025finding

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…

2025

How to Compare Things Properly? A Study of Argument Relevance in Comparative Question Answering

ACL 2025long

Comparative Question Answering (CQA) lies at the intersection of Question Answering, Argument Mining, and Summarization. It poses unique challenges due to the inherently subjective nature of many questions and the need to integrate diverse perspectives. Although the CQA task can be addressed using r…

2025

MVL-SIB: A Massively Multilingual Vision-Language Benchmark for Cross-Modal Topical Matching

ACL 2025finding

Existing multilingual vision-language (VL) benchmarks often only cover a handful of languages. Consequently, evaluations of large vision-language models (LVLMs) predominantly target high-resource languages, underscoring the need for evaluation data for low-resource languages. To address this limitat…

2025

Semi-automatic Sequential Sentence Classification in the Discourse Analysis Tool Suite

NAACL 2025system demonstrations

This paper explores an AI-assisted approach to sequential sentence annotation designed to enhance qualitative data analysis (QDA) workflows within the open-source Discourse Analysis Tool Suite (DATS) developed at our university.We introduce a three-phase Annotation Assistant that leverages the capab…

2024

CAM 2.0: End-to-End Open Domain Comparative Question Answering System

COLING 2024main

Comparative Question Answering (CompQA) is a Natural Language Processing task that combines Question Answering and Argument Mining approaches to answer subjective comparative questions in an efficient argumentative manner. In this paper, we present an end-to-end (full pipeline) system for answering…

2024

Concept Over Time Analysis: Unveiling Temporal Patterns for Qualitative Data Analysis

NAACL 2024system 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, user…

2024

Extending the Discourse Analysis Tool Suite with Whiteboards for Visual Qualitative Analysis

COLING 2024main

In this system demonstration paper, we describe the Whiteboards extension for an existing web-based platform for digital qualitative discourse analysis. Whiteboards comprise interactive graph-based interfaces to organize and manipulate objects, which can be qualitative research data, such as documen…

Cited by 1SourcePDFScholar
2024

Low-Resource Machine Translation through the Lens of Personalized Federated Learning

EMNLP 2024finding

We present a new approach called MeritOpt based on the Personalized Federated Learning algorithm MeritFed that can be applied to Natural Language Tasks with heterogeneous data. We evaluate it on the Low-Resource Machine Translation task, using the datasets of South East Asian and Finno-Ugric languag…

2024

Mitigating Hallucinations in Large Vision-Language Models with Instruction Contrastive Decoding

ACL 2024findings

Large Vision-Language Models (LVLMs) are increasingly adept at generating contextually detailed and coherent responses from visual inputs. However, their application in multimodal decision-making and open-ended generation is hindered by a notable rate of hallucinations, where generated text inaccura…

2024

On Zero-Shot Counterspeech Generation by LLMs

COLING 2024main

With the emergence of numerous Large Language Models (LLM), the usage of such models in various Natural Language Processing (NLP) applications is increasing extensively. Counterspeech generation is one such key task where efforts are made to develop generative models by fine-tuning LLMs with hatespe…

2024

SemRel2024: A Collection of Semantic Textual Relatedness Datasets for 13 Languages

ACL 2024findings

Exploring and quantifying semantic relatedness is central to representing language and holds significant implications across various NLP tasks. While earlier NLP research primarily focused on semantic similarity, often within the English language context, we instead investigate the broader phenomeno…

2024

Story Embeddings — Narrative-Focused Representations of Fictional Stories

EMNLP 2024main

We present a novel approach to modeling fictional narratives. The proposed model creates embeddings that represent a story such that similar narratives, that is, reformulations of the same story, will result in similar embeddings. We showcase the prowess of our narrative-focused embeddings on variou…

2023

The Role of Output Vocabulary in T2T LMs for SPARQL Semantic Parsing

ACL 2023findings

In this work, we analyse the role of output vocabulary for text-to-text (T2T) models on the task of SPARQL semantic parsing. We perform experiments within the the context of knowledge graph question answering (KGQA), where the task is to convert questions in natural language to the SPARQL query lang…

2021

ActiveAnno: General-Purpose Document-Level Annotation Tool with Active Learning Integration

NAACL 2021system demonstrations

ActiveAnno is an annotation tool focused on document-level annotation tasks developed both for industry and research settings. It is designed to be a general-purpose tool with a wide variety of use cases. It features a modern and responsive web UI for creating annotation projects, conducting annotat…

2021

Probing Pre-trained Language Models for Semantic Attributes and their Values

EMNLP 2021finding

Pretrained language models (PTLMs) yield state-of-the-art performance on many natural language processing tasks, including syntax, semantics and commonsense. In this paper, we focus on identifying to what extent do PTLMs capture semantic attributes and their values, e.g., the correlation between ric…

2021

Word Complexity is in the Eye of the Beholder

NAACL 2021long

Lexical complexity is a highly subjective notion, yet this factor is often neglected in lexical simplification and readability systems which use a ”one-size-fits-all” approach. In this paper, we investigate which aspects contribute to the notion of lexical complexity in various groups of readers, fo…

Cited by 19SourcePDFScholar
2020

Exploring Amharic Sentiment Analysis from Social Media Texts: Building Annotation Tools and Classification Models

COLING 2020main

This paper presents the study of sentiment analysis for Amharic social media texts. As the number of social media users is ever-increasing, social media platforms would like to understand the latent meaning and sentiments of a text to enhance decision-making procedures. However, low-resource languag…