Romanization-based Large-scale Adaptation of Multilingual Language Models
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Abstract (arXiv)
Large multilingual pretrained language models (mPLMs) have become the de facto state of the art for cross-lingual transfer in NLP. However, their large-scale deployment to many languages, besides pretraining data scarcity, is also hindered by the increase in vocabulary size and limitations in their parameter budget. In order to boost the capacity of mPLMs to deal with low-resource and unseen languages, we explore the potential of leveraging transliteration on a massive scale. In particular, we explore the UROMAN transliteration tool, which provides mappings from UTF-8 to Latin characters for all the writing systems, enabling inexpensive romanization for virtually any language. We first focus on establishing how UROMAN compares against other language-specific and manually curated transliterators for adapting multilingual PLMs. We then study and compare a plethora of data- and parameter-efficient strategies for adapting the mPLMs to romanized and non-romanized corpora of 14 diverse low-resource languages. Our results reveal that UROMAN-based transliteration can offer strong performance for many languages, with particular gains achieved in the most challenging setups: on languages with unseen scripts and with limited training data without any vocabulary augmentation. Further analyses reveal that an improved tokenizer based on romanized data can even outperform non-transliteration-based methods in the majority of languages.
Key facts. Cited by 21 papers in the map (data through 14 Oct 2026). Builds on 25 of its 42 references that are in the map. First posted on arXiv 18 Apr 2023.
Builds on
25 of 42 references.
References · 25
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13 more
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Citing papers per year: 2023: 1; 2024: 10; 2025: 3; 2026: 7.
21 papers.
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- 2024Teaching Large Language Models an Unseen Language on the Flycited by 30
- 2024RomanSetu: Efficiently unlocking multilingual capabilities of Large Language Models via Romanizationcited by 29
- 2024Breaking the Script Barrier in Multilingual Pre-Trained Language Models with Transliteration-Based Post-Training Alignmentcited by 14
- 2024TransMI: A Framework to Create Strong Baselines from Multilingual Pretrained Language Models for Transliterated Datacited by 9
- 2024Exploring the Role of Transliteration in In-Context Learning for Low-resource Languages Written in Non-Latin Scriptscited by 8
- 2023Are Structural Concepts Universal in Transformer Language Models? Towards Interpretable Cross-Lingual Generalizationcited by 6
- 2024How Transliterations Improve Crosslingual Alignmentcited by 6
- 2024TransliCo: A Contrastive Learning Framework to Address the Script Barrier in Multilingual Pretrained Language Modelscited by 3
- 2024Extending LLMs to New Languages: A Case Study of Llama and Persian Adaptationcited by 3
- 2025Happiness is Sharing a Vocabulary: A Study of Transliteration Methodscited by 2
- 2024Training a Bilingual Language Model by Mapping Tokens onto a Shared Character Spacecited by 1
- 2024Romanization Encoding For Multilingual ASRcited by 1
9 more
- 2025Enhancing Cross-Lingual Transfer through Reversible Transliteration: A Huffman-Based Approach for Low-Resource Languagescited by 1
- 2026One Script Instead of Hundreds? On Pretraining Romanized Encoder Language Modelscited by 1
- 2026Pingala: Prosody-Aware Decoding for Sanskrit Poetry Generationcited by 1
- 2025Tracing Multilingual Knowledge Acquisition Dynamics in Domain Adaptation: A Case Study of English-Japanese Biomedical Adaptationcited by 0
- 2026Linear Script Representations in Speech Foundation Models Enable Zero-Shot Transliterationcited by 0
- 2026A Study of Crosslinguistic Influence in Language Modelscited by 0
- 2026The Latin Substrate: How Language Models Represent and Mediate Script Choicecited by 0
- 2026Cross-Lingual Transfer for Machine Translation in Turkic Languagescited by 0
- 2026One Form to Transfer Them All: Pretraining Multilingual Language Models Beyond Native Orthographycited by 0
- 2026One Form to Transfer Them All: Pretraining Multilingual Language Models Beyond Native Orthography26 Aug 2026
- 2026Cross-Lingual Transfer for Machine Translation in Turkic Languages31 Jul 2026
- 2026The Latin Substrate: How Language Models Represent and Mediate Script Choice29 May 2026
- 2026Pingala: Prosody-Aware Decoding for Sanskrit Poetry Generation25 Mar 2026
- 2026A Study of Crosslinguistic Influence in Language Models29 Jan 2026
- 2026One Script Instead of Hundreds? On Pretraining Romanized Encoder Language Models9 Jan 2026
- 2026Linear Script Representations in Speech Foundation Models Enable Zero-Shot Transliteration6 Jan 2026
- 2025Tracing Multilingual Knowledge Acquisition Dynamics in Domain Adaptation: A Case Study of English-Japanese Biomedical Adaptation14 Oct 2025
- 2025Happiness is Sharing a Vocabulary: A Study of Transliteration Methods12 Oct 2025
- 2025Enhancing Cross-Lingual Transfer through Reversible Transliteration: A Huffman-Based Approach for Low-Resource Languages22 Sep 2025
- 2024Extending LLMs to New Languages: A Case Study of Llama and Persian Adaptation17 Dec 2024
- 2024How Transliterations Improve Crosslingual Alignment25 Sep 2024
9 more
- 2024Romanization Encoding For Multilingual ASR5 Jul 2024
- 2024Exploring the Role of Transliteration in In-Context Learning for Low-resource Languages Written in Non-Latin Scripts2 Jul 2024
- 2024Breaking the Script Barrier in Multilingual Pre-Trained Language Models with Transliteration-Based Post-Training Alignment28 Jun 2024
- 2024TransMI: A Framework to Create Strong Baselines from Multilingual Pretrained Language Models for Transliterated Data16 May 2024
- 2024Teaching Large Language Models an Unseen Language on the Fly29 Feb 2024
- 2024Training a Bilingual Language Model by Mapping Tokens onto a Shared Character Space25 Feb 2024
- 2024RomanSetu: Efficiently unlocking multilingual capabilities of Large Language Models via Romanization25 Jan 2024
- 2024TransliCo: A Contrastive Learning Framework to Address the Script Barrier in Multilingual Pretrained Language Models12 Jan 2024
- 2023Are Structural Concepts Universal in Transformer Language Models? Towards Interpretable Cross-Lingual Generalization19 Oct 2023
- 2024Teaching Large Language Models an Unseen Language on the Flycited by 30
- 2024RomanSetu: Efficiently unlocking multilingual capabilities of Large Language Models via Romanizationcited by 29
- 2024Breaking the Script Barrier in Multilingual Pre-Trained Language Models with Transliteration-Based Post-Training Alignmentcited by 14
- 2024TransMI: A Framework to Create Strong Baselines from Multilingual Pretrained Language Models for Transliterated Datacited by 9
- 2024Exploring the Role of Transliteration in In-Context Learning for Low-resource Languages Written in Non-Latin Scriptscited by 8
- 2023Are Structural Concepts Universal in Transformer Language Models? Towards Interpretable Cross-Lingual Generalizationcited by 6
- 2024How Transliterations Improve Crosslingual Alignmentcited by 6
- 2024TransliCo: A Contrastive Learning Framework to Address the Script Barrier in Multilingual Pretrained Language Modelscited by 3
- 2024Extending LLMs to New Languages: A Case Study of Llama and Persian Adaptationcited by 3
- 2025Happiness is Sharing a Vocabulary: A Study of Transliteration Methodscited by 2
- 2024Training a Bilingual Language Model by Mapping Tokens onto a Shared Character Spacecited by 1
- 2024Romanization Encoding For Multilingual ASRcited by 1
12 most cited of 21 All 21 (JSON)
- 2026One Form to Transfer Them All: Pretraining Multilingual Language Models Beyond Native Orthography26 Aug 2026
- 2026Cross-Lingual Transfer for Machine Translation in Turkic Languages31 Jul 2026
- 2026The Latin Substrate: How Language Models Represent and Mediate Script Choice29 May 2026
- 2026Pingala: Prosody-Aware Decoding for Sanskrit Poetry Generation25 Mar 2026
- 2026A Study of Crosslinguistic Influence in Language Models29 Jan 2026
- 2026One Script Instead of Hundreds? On Pretraining Romanized Encoder Language Models9 Jan 2026
- 2026Linear Script Representations in Speech Foundation Models Enable Zero-Shot Transliteration6 Jan 2026
- 2025Tracing Multilingual Knowledge Acquisition Dynamics in Domain Adaptation: A Case Study of English-Japanese Biomedical Adaptation14 Oct 2025
- 2025Happiness is Sharing a Vocabulary: A Study of Transliteration Methods12 Oct 2025
- 2025Enhancing Cross-Lingual Transfer through Reversible Transliteration: A Huffman-Based Approach for Low-Resource Languages22 Sep 2025
- 2024Extending LLMs to New Languages: A Case Study of Llama and Persian Adaptation17 Dec 2024
- 2024How Transliterations Improve Crosslingual Alignment25 Sep 2024
12 newest of 21 All 21 (JSON)