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Chunlan Ma

6 accepted papers

2025

How Transliterations Improve Crosslingual Alignment

COLING 2025main

Recent studies have shown that post-aligning multilingual pretrained language models (mPLMs) using alignment objectives on both original and transliterated data can improve crosslingual alignment. This improvement further leads to better crosslingual transfer performance. However, it remains unclear…

2025

LangSAMP: Language-Script Aware Multilingual Pretraining

ACL 2025long

Recent multilingual pretrained language models (mPLMs) often avoid using language embeddings – learnable vectors assigned to individual languages. However, this places a significant burden on token representations to encode all language-specific information, which may hinder language neutrality. To…

2025

Taxi1500: A Dataset for Multilingual Text Classification in 1500 Languages

NAACL 2025short

While broad-coverage multilingual natural language processing tools have been developed, a significant portion of the world’s over 7000 languages are still neglected. One reason is the lack of evaluation datasets that cover a diverse range of languages, particularly those that are low-resource or en…

2025

TransMI: A Framework to Create Strong Baselines from Multilingual Pretrained Language Models for Transliterated Data

COLING 2025main

Transliterating related languages that use different scripts into a common script is effective for improving crosslingual transfer in downstream tasks. However, this methodology often makes pretraining a model from scratch unavoidable, as transliteration brings about new subwords not covered in exis…

2024

TransliCo: A Contrastive Learning Framework to Address the Script Barrier in Multilingual Pretrained Language Models

ACL 2024long

The world’s more than 7000 languages are written in at least 293 scripts. Due to various reasons, many closely related languages use different scripts, which poses a difficulty for multilingual pretrained language models (mPLMs) in learning crosslingual knowledge through lexical overlap. As a conseq…

2023

Glot500: Scaling Multilingual Corpora and Language Models to 500 Languages

ACL 2023long

The NLP community has mainly focused on scaling Large Language Models (LLMs) vertically, i.e., making them better for about 100 languages. We instead scale LLMs horizontally: we create, through continued pretraining, Glot500-m, an LLM that covers 511 predominantly low-resource languages. An importan…