Expanding Pretrained Models to Thousands More Languages via Lexicon-based Adaptation
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Abstract (arXiv)
The performance of multilingual pretrained models is highly dependent on the availability of monolingual or parallel text present in a target language. Thus, the majority of the world's languages cannot benefit from recent progress in NLP as they have no or limited textual data. To expand possibilities of using NLP technology in these under-represented languages, we systematically study strategies that relax the reliance on conventional language resources through the use of bilingual lexicons, an alternative resource with much better language coverage. We analyze different strategies to synthesize textual or labeled data using lexicons, and how this data can be combined with monolingual or parallel text when available. For 19 under-represented languages across 3 tasks, our methods lead to consistent improvements of up to 5 and 15 points with and without extra monolingual text respectively. Overall, our study highlights how NLP methods can be adapted to thousands more languages that are under-served by current technology
Key facts. Cited by 44 papers in the map (data through 7 Oct 2026). Builds on 31 of its 49 references that are in the map. First posted on arXiv 17 Mar 2022.
Builds on
31 of 49 references.
References · 31
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- 2019Unsupervised Cross-lingual Representation Learning at Scalecited by 3,907
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- 2019fairseq: A Fast, Extensible Toolkit for Sequence Modelingcited by 1,486
- 2019Cross-lingual Language Model Pretrainingcited by 1,088
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19 more
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Citing papers per year: 2022: 13; 2023: 11; 2024: 16; 2025: 2; 2026: 2.
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- 2023SIB-200: A Simple, Inclusive, and Big Evaluation Dataset for Topic Classification in 200+ Languages and Dialectscited by 149
- 2023UniMax: Fairer and more Effective Language Sampling for Large-Scale Multilingual Pretrainingcited by 147
- 2023Glot500: Scaling Multilingual Corpora and Language Models to 500 Languagescited by 116
- 2023A Benchmark for Learning to Translate a New Language from One Grammar Bookcited by 74
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- 2024LLaMAX: Scaling Linguistic Horizons of LLM by Enhancing Translation Capabilities Beyond 100 Languagescited by 47
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- 2024MaLA-500: Massive Language Adaptation of Large Language Modelscited by 28
- 2022Phylogeny-Inspired Adaptation of Multilingual Models to New Languagescited by 24
- 2022GreenPLM: Cross-Lingual Transfer of Monolingual Pre-Trained Language Models at Almost No Costcited by 24
- 2022Mini-Model Adaptation: Efficiently Extending Pretrained Models to New Languages via Aligned Shallow Trainingcited by 24
32 more
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- 2023Translation and Fusion Improves Zero-shot Cross-lingual Information Extractioncited by 15
- 2025Charting the Landscape of African NLP: Mapping Progress and Shaping the Road Aheadcited by 15
- 2024LexC-Gen: Generating Data for Extremely Low-Resource Languages with Large Language Models and Bilingual Lexiconscited by 11
- 2023Language Embeddings Sometimes Contain Typological Generalizationscited by 9
- 2022Probing Cross-Lingual Lexical Knowledge from Multilingual Sentence Encoderscited by 7
- 2022The first neural machine translation system for the Erzya languagecited by 7
- 2022Data-Efficient Strategies for Expanding Hate Speech Detection into Under-Resourced Languagescited by 7
- 2022Improving Bilingual Lexicon Induction with Cross-Encoder Rerankingcited by 7
- 2023Bilex Rx: Lexical Data Augmentation for Massively Multilingual Machine Translationcited by 7
- 2024Zero-shot Sentiment Analysis in Low-Resource Languages Using a Multilingual Sentiment Lexiconcited by 7
- 2024How Transliterations Improve Crosslingual Alignmentcited by 6
- 2022Too Brittle To Touch: Comparing the Stability of Quantization and Distillation Towards Developing Lightweight Low-Resource MT Modelscited by 5
- 2023Mitigating Data Imbalance and Representation Degeneration in Multilingual Machine Translationcited by 5
- 2022Graph-Based Multilingual Label Propagation for Low-Resource Part-of-Speech Taggingcited by 4
- 2024Self-Augmented In-Context Learning for Unsupervised Word Translationcited by 4
- 2024Tomato, Tomahto, Tomate: Do Multilingual Language Models Understand Based on Subword-Level Semantic Concepts?cited by 4
- 2023On Bilingual Lexicon Induction with Large Language Modelscited by 2
- 2024A Morphologically-Aware Dictionary-based Data Augmentation Technique for Machine Translation of Under-Represented Languagescited by 2
- 2024ANGOFA: Leveraging OFA Embedding Initialization and Synthetic Data for Angolan Language Modelcited by 2
- 2024LEIA: Facilitating Cross-lingual Knowledge Transfer in Language Models with Entity-based Data Augmentationcited by 1
- 2024Incorporating Lexical and Syntactic Knowledge for Unsupervised Cross-Lingual Transfercited by 1
- 2024ChatZero:Zero-shot Cross-Lingual Dialogue Generation via Pseudo-Target Languagecited by 1
- 2022SilverAlign: MT-Based Silver Data Algorithm For Evaluating Word Alignmentcited by 0
- 2022Learnings from Technological Interventions in a Low Resource Language: Enhancing Information Access in Gondicited by 0
- 2024Transferring BERT Capabilities from High-Resource to Low-Resource Languages Using Vocabulary Matchingcited by 0
- 2024NusaBERT: Teaching IndoBERT to be Multilingual and Multiculturalcited by 0
- 2025Adapting Language Models to Indonesian Local Languages: An Empirical Study of Language Transferability on Zero-Shot Settingscited by 0
- 2026Effective vocabulary expansion of multilingual language models for extremely low-resource languagescited by 0
- 2026Resource-Lean Lexicon Induction for German Dialectscited by 0
- 2026Resource-Lean Lexicon Induction for German Dialects26 Apr 2026
- 2026Effective vocabulary expansion of multilingual language models for extremely low-resource languages10 Feb 2026
- 2025Adapting Language Models to Indonesian Local Languages: An Empirical Study of Language Transferability on Zero-Shot Settings2 Jul 2025
- 2025Charting the Landscape of African NLP: Mapping Progress and Shaping the Road Ahead27 May 2025
- 2024Tomato, Tomahto, Tomate: Do Multilingual Language Models Understand Based on Subword-Level Semantic Concepts?7 Nov 2024
- 2024Bridging the Language Gaps in Large Language Models with Inference-Time Cross-Lingual Intervention16 Oct 2024
- 2024How Transliterations Improve Crosslingual Alignment25 Sep 2024
- 2024ChatZero:Zero-shot Cross-Lingual Dialogue Generation via Pseudo-Target Language16 Aug 2024
- 2024LLaMAX: Scaling Linguistic Horizons of LLM by Enhancing Translation Capabilities Beyond 100 Languages8 Jul 2024
- 2024Exploring Design Choices for Building Language-Specific LLMs20 Jun 2024
- 2024Incorporating Lexical and Syntactic Knowledge for Unsupervised Cross-Lingual Transfer25 Apr 2024
- 2024ANGOFA: Leveraging OFA Embedding Initialization and Synthetic Data for Angolan Language Model3 Apr 2024
32 more
- 2024NusaBERT: Teaching IndoBERT to be Multilingual and Multicultural4 Mar 2024
- 2024Transferring BERT Capabilities from High-Resource to Low-Resource Languages Using Vocabulary Matching22 Feb 2024
- 2024LexC-Gen: Generating Data for Extremely Low-Resource Languages with Large Language Models and Bilingual Lexicons21 Feb 2024
- 2024LEIA: Facilitating Cross-lingual Knowledge Transfer in Language Models with Entity-based Data Augmentation18 Feb 2024
- 2024Self-Augmented In-Context Learning for Unsupervised Word Translation15 Feb 2024
- 2024Zero-shot Sentiment Analysis in Low-Resource Languages Using a Multilingual Sentiment Lexicon3 Feb 2024
- 2024A Morphologically-Aware Dictionary-based Data Augmentation Technique for Machine Translation of Under-Represented Languages2 Feb 2024
- 2024MaLA-500: Massive Language Adaptation of Large Language Models24 Jan 2024
- 2023OFA: A Framework of Initializing Unseen Subword Embeddings for Efficient Large-scale Multilingual Continued Pretraining15 Nov 2023
- 2023On Bilingual Lexicon Induction with Large Language Models21 Oct 2023
- 2023A Benchmark for Learning to Translate a New Language from One Grammar Book28 Sep 2023
- 2023SIB-200: A Simple, Inclusive, and Big Evaluation Dataset for Topic Classification in 200+ Languages and Dialects14 Sep 2023
- 2023Translation and Fusion Improves Zero-shot Cross-lingual Information Extraction23 May 2023
- 2023Mitigating Data Imbalance and Representation Degeneration in Multilingual Machine Translation22 May 2023
- 2023Glot500: Scaling Multilingual Corpora and Language Models to 500 Languages20 May 2023
- 2023UniMax: Fairer and more Effective Language Sampling for Large-Scale Multilingual Pretraining18 Apr 2023
- 2023Transfer to a Low-Resource Language via Close Relatives: The Case Study on Faroese18 Apr 2023
- 2023Bilex Rx: Lexical Data Augmentation for Massively Multilingual Machine Translation27 Mar 2023
- 2023Language Embeddings Sometimes Contain Typological Generalizations19 Jan 2023
- 2022Mini-Model Adaptation: Efficiently Extending Pretrained Models to New Languages via Aligned Shallow Training20 Dec 2022
- 2022Learnings from Technological Interventions in a Low Resource Language: Enhancing Information Access in Gondi29 Nov 2022
- 2022GreenPLM: Cross-Lingual Transfer of Monolingual Pre-Trained Language Models at Almost No Cost13 Nov 2022
- 2022Improving Bilingual Lexicon Induction with Cross-Encoder Reranking30 Oct 2022
- 2022Too Brittle To Touch: Comparing the Stability of Quantization and Distillation Towards Developing Lightweight Low-Resource MT Models27 Oct 2022
- 2022Data-Efficient Strategies for Expanding Hate Speech Detection into Under-Resourced Languages20 Oct 2022
- 2022Graph-Based Multilingual Label Propagation for Low-Resource Part-of-Speech Tagging18 Oct 2022
- 2022SilverAlign: MT-Based Silver Data Algorithm For Evaluating Word Alignment12 Oct 2022
- 2022The first neural machine translation system for the Erzya language19 Sep 2022
- 2022Language Modelling with Pixels14 Jul 2022
- 2022NusaX: Multilingual Parallel Sentiment Dataset for 10 Indonesian Local Languages31 May 2022
- 2022Phylogeny-Inspired Adaptation of Multilingual Models to New Languages19 May 2022
- 2022Probing Cross-Lingual Lexical Knowledge from Multilingual Sentence Encoders30 Apr 2022
- 2023SIB-200: A Simple, Inclusive, and Big Evaluation Dataset for Topic Classification in 200+ Languages and Dialectscited by 149
- 2023UniMax: Fairer and more Effective Language Sampling for Large-Scale Multilingual Pretrainingcited by 147
- 2023Glot500: Scaling Multilingual Corpora and Language Models to 500 Languagescited by 116
- 2023A Benchmark for Learning to Translate a New Language from One Grammar Bookcited by 74
- 2022NusaX: Multilingual Parallel Sentiment Dataset for 10 Indonesian Local Languagescited by 67
- 2022Language Modelling with Pixelscited by 53
- 2024LLaMAX: Scaling Linguistic Horizons of LLM by Enhancing Translation Capabilities Beyond 100 Languagescited by 47
- 2023OFA: A Framework of Initializing Unseen Subword Embeddings for Efficient Large-scale Multilingual Continued Pretrainingcited by 37
- 2024MaLA-500: Massive Language Adaptation of Large Language Modelscited by 28
- 2022Phylogeny-Inspired Adaptation of Multilingual Models to New Languagescited by 24
- 2022GreenPLM: Cross-Lingual Transfer of Monolingual Pre-Trained Language Models at Almost No Costcited by 24
- 2022Mini-Model Adaptation: Efficiently Extending Pretrained Models to New Languages via Aligned Shallow Trainingcited by 24
12 most cited of 43 All 43 (JSON)
- 2026Resource-Lean Lexicon Induction for German Dialects26 Apr 2026
- 2026Effective vocabulary expansion of multilingual language models for extremely low-resource languages10 Feb 2026
- 2025Adapting Language Models to Indonesian Local Languages: An Empirical Study of Language Transferability on Zero-Shot Settings2 Jul 2025
- 2025Charting the Landscape of African NLP: Mapping Progress and Shaping the Road Ahead27 May 2025
- 2024Tomato, Tomahto, Tomate: Do Multilingual Language Models Understand Based on Subword-Level Semantic Concepts?7 Nov 2024
- 2024Bridging the Language Gaps in Large Language Models with Inference-Time Cross-Lingual Intervention16 Oct 2024
- 2024How Transliterations Improve Crosslingual Alignment25 Sep 2024
- 2024ChatZero:Zero-shot Cross-Lingual Dialogue Generation via Pseudo-Target Language16 Aug 2024
- 2024LLaMAX: Scaling Linguistic Horizons of LLM by Enhancing Translation Capabilities Beyond 100 Languages8 Jul 2024
- 2024Exploring Design Choices for Building Language-Specific LLMs20 Jun 2024
- 2024Incorporating Lexical and Syntactic Knowledge for Unsupervised Cross-Lingual Transfer25 Apr 2024
- 2024NusaBERT: Teaching IndoBERT to be Multilingual and Multicultural4 Mar 2024
12 newest of 43 All 43 (JSON)