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Weiting Tan

8 accepted papers

2025

Seeing is Believing: Emotion-Aware Audio-Visual Language Modeling for Expressive Speech Generation

EMNLP 2025

We present an Audio-Visual Language Model (AVLM) for expressive speech generation by integrating full-face visual cues into a pre-trained expressive speech model. We explore multiple visual encoders and multimodal fusion strategies during pre-training to identify the most effective integration appro

2025

Upsample or Upweight? Balanced Training on Heavily Imbalanced Datasets

NAACL 2025long

Data abundance across different domains exhibits a long-tailed distribution: few domains have abundant data, while most face data scarcity. Our work focuses on a multilingual setting, where available data is heavily skewed toward high-resource languages, creating significant imbalances in training d…

Cited by 0SourcePDFScholar
2024

Contrastive Preference Optimization: Pushing the Boundaries of LLM Performance in Machine Translation

ICML 2024poster

Moderate-sized large language models (LLMs) -- those with 7B or 13B parameters -- exhibit promising machine translation (MT) performance. However, they do not match the performance of state-of-the-art conventional encoder-decoder translation models or larger-scale LLMs such as GPT-4. In this study,…

2024

DiffNorm: Self-Supervised Normalization for Non-autoregressive Speech-to-speech Translation

NeurIPS 2024poster

Non-autoregressive Transformers (NATs) are recently applied in direct speech-to-speech translation systems, which convert speech across different languages without intermediate text data. Although NATs generate high-quality outputs and offer faster inference than autoregressive models, they tend to…

2024

Narrowing the Gap between Zero- and Few-shot Machine Translation by Matching Styles

NAACL 2024findings

Large language models trained primarily in a monolingual setting have demonstrated their ability to generalize to machine translation using zero- and few-shot examples with in-context learning. However, even though zero-shot translations are relatively good, there remains a discernible gap comparing…

Cited by 5SourcePDFScholar
2024

The Language Barrier: Dissecting Safety Challenges of LLMs in Multilingual Contexts

ACL 2024findings

As the influence of large language models (LLMs) spans across global communities, their safety challenges in multilingual settings become paramount for alignment research. This paper examines the variations in safety challenges faced by LLMs across different languages and discusses approaches to all…

Cited by 55SourcePDFScholar
2023

Condensing Multilingual Knowledge with Lightweight Language-Specific Modules

EMNLP 2023long main

Incorporating language-specific (LS) modules or Mixture-of-Experts (MoE) are proven methods to boost performance in multilingual model performance, but the scalability of these approaches to hundreds of languages or experts tends to be hard to manage. We present Language-specific Matrix Synthesis (L…

Cited by 0SourcecodeScholar
2023

Flatness-Aware Prompt Selection Improves Accuracy and Sample Efficiency

EMNLP 2023long findings

With growing capabilities of large language models, prompting them has become the dominant way to access them. This has motivated the development of strategies for automatically selecting effective language prompts. In this paper, we introduce **pFlat** (prompt flatness), a new metric to quantify…

Cited by 0SourcecodeScholar