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BamiBERT: A New BERT-based Language Model for Vietnamese

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Computer Science > Computation and Language

arXiv:2607.02259 (cs)
[Submitted on 2 Jul 2026]

Title:BamiBERT: A New BERT-based Language Model for Vietnamese

View a PDF of the paper titled BamiBERT: A New BERT-based Language Model for Vietnamese, by Dat Quoc Nguyen and 3 other authors
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Abstract:In this paper, we introduce BamiBERT, a new BERT-based pre-trained language model for Vietnamese that addresses key limitations of PhoBERT -- the current de facto Vietnamese text encoder. Trained from scratch on a 129GB corpus of general-domain Vietnamese text for 20 epochs, BamiBERT supports an extended context length of up to 2048 tokens and operates directly on raw input, eliminating the need for external word segmentation. Across 8 Vietnamese benchmarks, it achieves the best score on 11 of 15 metrics and the second-best on 3 others, setting a new state of the art among "base"-sized Vietnamese encoders and demonstrating strong cross-domain generalization. We release BamiBERT at: this https URL
Subjects: Computation and Language (cs.CL)
Cite as: arXiv:2607.02259 [cs.CL]
  (or arXiv:2607.02259v1 [cs.CL] for this version)
  https://doi.org/10.48550/arXiv.2607.02259
arXiv-issued DOI via DataCite (pending registration)

Submission history

From: Dat Quoc Nguyen [view email]
[v1] Thu, 2 Jul 2026 14:46:54 UTC (51 KB)
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