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Jan Niehues

16 accepted papers

2026

MCIF: Multimodal Crosslingual Instruction-Following Benchmark from Scientific Talks

ICLR 2026poster

Recent advances in large language models have laid the foundation for multimodal LLMs (MLLMs), which unify text, speech, and vision within a single framework. As these models are rapidly evolving toward general-purpose instruction following across diverse and complex tasks, a key frontier is evaluat…

Cited by 0SourcecodeScholar
2025

Are Generative Models Underconfident? Better Quality Estimation with Boosted Model Probability

EMNLP 2025

Quality Estimation (QE) is estimating quality of the model output during inference when the ground truth is not available. Deriving output quality from the models’ output probability is the most trivial and low-effort way. However, we show that the output probability of text-generation models can ap

Cited by 0SourcePDFScholar
2025

How do Multimodal Foundation Models Encode Text and Speech? An Analysis of Cross-Lingual and Cross-Modal Representations

NAACL 2025short

Multimodal foundation models aim to create a unified representation space that abstracts away from surface features like language syntax or modality differences. To investigate this, we study the internal representations of three recent models, analyzing the model activations from semantically equiv…

2024

Contextual Refinement of Translations: Large Language Models for Sentence and Document-Level Post-Editing

NAACL 2024long

Large language models (LLMs) have demonstrated considerable success in various natural language processing tasks, but open-source LLMs have yet to attain state-of-the-art performance in Neural Machine Translation (NMT). Nevertheless, their significant performance in tasks demanding a broad understan…

Cited by 17SourcePDFScholar
2024

Evaluating the IWSLT2023 Speech Translation Tasks: Human Annotations, Automatic Metrics, and Segmentation

COLING 2024main

Human evaluation is a critical component in machine translation system development and has received much attention in text translation research. However, little prior work exists on the topic of human evaluation for speech translation, which adds additional challenges such as noisy data and segmenta…

Cited by 1SourcePDFScholar
2024

Language-Independent Representations Improve Zero-Shot Summarization

NAACL 2024short

Finetuning pretrained models on downstream generation tasks often leads to catastrophic forgetting in zero-shot conditions. In this work, we focus on summarization and tackle the problem through the lens of language-independent representations. After training on monolingual summarization, we perform…

2024

Optimizing Rare Word Accuracy in Direct Speech Translation with a Retrieval-and-Demonstration Approach

EMNLP 2024main

Direct speech translation (ST) models often struggle with rare words. Incorrect translation of these words can have severe consequences, impacting translation quality and user trust. While rare word translation is inherently challenging for neural models due to sparse learning signals, real-world sc…

2024

SciEx: Benchmarking Large Language Models on Scientific Exams with Human Expert Grading and Automatic Grading

EMNLP 2024main

With the rapid development of Large Language Models (LLMs), it is crucial to have benchmarks which can evaluate the ability of LLMs on different domains. One common use of LLMs is performing tasks on scientific topics, such as writing algorithms, querying databases or giving mathematical proofs. Ins…

2024

Speech Recognition Corpus of the Khinalug Language for Documenting Endangered Languages

COLING 2024main

Automatic Speech Recognition (ASR) can be a valuable tool to document endangered languages. However, building ASR tools for these languages poses several difficult research challenges, notably data scarcity. In this paper, we show the whole process of creating a useful ASR tool for language document…

Cited by 2SourcePDFScholar
2022

Tackling Data Scarcity in Speech Translation Using Zero-Shot Multilingual Machine Translation Techniques

ICASSP 2022accepted

Recently, end-to-end speech translation (ST) has gained significant attention as it avoids error propagation. However, the approach suffers from data scarcity. It heavily depends on direct ST data and is less efficient in making use of speech transcription and text translation data, which is often m…

Cited by 0SourceScholar
2021

Improving Zero-Shot Translation by Disentangling Positional Information

ACL 2021long

Multilingual neural machine translation has shown the capability of directly translating between language pairs unseen in training, i.e. zero-shot translation. Despite being conceptually attractive, it often suffers from low output quality. The difficulty of generalizing to new translation direction…

2020

Improving Sequence-To-Sequence Speech Recognition Training with On-The-Fly Data Augmentation

ICASSP 2020accepted

Sequence-to-Sequence (S2S) models recently started to show state-of-the-art performance for automatic speech recognition (ASR). With these large and deep models overfitting remains the largest problem, outweighing performance improvements that can be obtained from better architectures. One solution…

Cited by 0SourceScholar