How Important Is Tokenization in French Medical Masked Language Models? (2024.lrec-main)
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| Challenge: | Word tokenization into subword units has become the prevailing standard in the field of natural language processing (NLP) over recent years . the precise factors contributing to its success remain unclear . |
| Approach: | They propose a tokenization strategy that integrates morpheme-enriched word segmentation into existing tokenization methods. |
| Outcome: | The proposed tokenization strategy outperforms character and word tokenization but the precise factors contributing to its success remain unclear. |
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Where are we Still Split on Tokenization? (2024.findings-eacl)
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| Challenge: | Identifying tokens is a crucial first step for many tasks in Natural Language Processing (NLP) gold tokenization is often assumed, but some work on token-level tasks is more challenging. |
| Approach: | They propose an efficient method for tokenization with subword-based language models and evaluate it on 122 languages in 20 scripts. |
| Outcome: | The proposed method performs on par with the state-of-the-art on 122 languages in 20 scripts. |
Tokenization Is More Than Compression (2024.emnlp-main)
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| Challenge: | Existing tokenization approaches like Byte-Pair Encoding (BPE) have been suggested that their effectiveness stems from their ability to condense text into a relatively small number of tokens. |
| Approach: | They propose a tokenizer that segments a document’s text into the minimum number of tokens for a given vocabulary and propose fewer tokens to improve downstream performance. |
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Exploring morphology-aware tokenization: A case study on Spanish language modeling (2025.emnlp-main)
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| Challenge: | a recent study shows that subword tokenization improves performance of neural language models. |
| Approach: | They propose a linguistically grounded approach to train a tokenizer on morphologically segmented data. |
| Outcome: | The proposed tokenizer improves on a Spanish language model with morphological information. |
AdaptBPE: From General Purpose to Specialized Tokenizers (2026.eacl-long)
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| Challenge: | Subword tokenization methods impact performance and efficiency of large language models . generic tokens can incur inefficiencies when applying the model to specific domains or languages . |
| Approach: | They propose a subword tokenization technique that selectively replaces low-utility tokens with more relevant ones based on their frequency in an adaptation corpus. |
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Learn Your Tokens: Word-Pooled Tokenization for Language Modeling (2023.findings-emnlp)
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| Challenge: | Language models typically tokenize text into subwords, using a deterministic, hand-engineered heuristic of combining characters into longer surface-level strings such as ‘ing’ or whole words. |
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Multilingual Tokenization through the Lens of Indian Languages: Challenges and Insights (2026.findings-acl)
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Maharaj Brahma, N J Karthika, Rajat Verma, Nagasai Saketh Naidu, Rohit Saluja, Maunendra Sankar Desarkar, Ganesh Ramakrishnan
| Challenge: | Existing tokenizers are often skewed towards high-resource languages limiting their effectiveness for linguistically diverse and morphologically rich languages. |
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Tokenization Falling Short: On Subword Robustness in Large Language Models (2024.findings-emnlp)
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| Challenge: | Language models typically tokenize raw text into sequences of subword identifiers from a predefined vocabulary. |
| Approach: | They propose to tokenize raw text into sequences of subword identifiers from a predefined vocabulary . they also investigate the challenges and their impact on large language models . |
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Tokenization Impacts Multilingual Language Modeling: Assessing Vocabulary Allocation and Overlap Across Languages (2023.findings-acl)
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| Challenge: | Multilingual language models perform surprisingly well in a variety of NLP tasks for diverse languages. |
| Approach: | They propose to evaluate the quality of lexical representation and vocabulary overlap observed in sub-word tokenizers. |
| Outcome: | The proposed criteria show that the overlap of vocabulary across languages can be detrimental to certain downstream tasks. |
Tokenization with Factorized Subword Encoding (2023.findings-acl)
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| Challenge: | Subword tokenization methods are often used to project subwords onto triplets . a typical tokenizer consists of 10 000s of subword mapped onto a single index . |
| Approach: | They propose a subword tokenization method that factorizes subwords onto triplets using a VQ-VAE model. |
| Outcome: | The proposed tokenization method is more appropriate and robust for morphological tasks than the commonly used byte-pair encoding (BPE) tokenization algorithm. |
Stop Taking Tokenizers for Granted: They Are Core Design Decisions in Large Language Models (2026.eacl-long)
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| Challenge: | Subword tokenization approaches misalign with linguistic structure and waste capacity across languages and domains. |
| Approach: | They argue for a context-aware framework that integrates tokenizer and model co-design . they argue that tokenization should be treated as a core design problem, not an afterthought . |
| Outcome: | The proposed framework integrates tokenizer and model co-design, guided by linguistic, domain, and deployment considerations. |