Burmese C4 dataset (Cleaned)

Overview

This dataset is a cleaned version of the Burmese subset of the C4 multilingual dataset. I clean existing script patterns and noises while retaining high-quality Myanmar (\U1000-\U109F) and English text. If I ever publicize something, it must be under the open-source license ODC-BY, as always.

Why?

All of Myanmar scripts are very low-resource in this AI era. High-quality data is always needed for training robust NLP models. Garbage in - garbage out. This cleaned version of Burmese C4 is just my another tiny contribution towards the development of Myanmar LLM models, enforcing character coverage, and handling legacy encoding issues like Zawgyi.

Cleaning Process

I tried the following steps to refine the data:

Remove original URLs: Too bored to retain them, please reach out to me in case you need the original URLs.
Script & HTML Cleaning: Removed any residual JavaScript, HTML tags, and other non-text elements.
Character Coverage Filtering: Retained only documents where English and Myanmar Unicode characters constitute at least 95% of the text.
Whitespace Normalization: Standardized spaces, tabs, and line breaks.
Zawgyi Detection & Conversion: Converted auto-convertible Zawgyi text to Unicode and discarded non-convertible documents.
Tokenizer Enforcement: Any content outside Burmese and English language constraints is replaced with <unk>.

Usage

This dataset is designed for:

Pretraining and fine-tuning multilingual NLP models
Burmese-English language modeling
Low-resource NLP research

Dataset Format

Language Coverage: Burmese (Unicode), English (Latin)
File Type: JSON

Citation

Cite me plz?

@dataset {alexanderbeatson,
    author       = { {Alexander Beatson} },
    title        = { Burmese C4 dataset (Cleaned) },
    year         = 2025,
    url          = { https://huggingface.co/datasets/alexbeatson/c4_mm },
    doi          = { 10.57967/hf/4865 },
    publisher    = { Hugging Face },
    note     = {ORCID: 0000-0002-1829-5965} 
}

License

This dataset is released under the ODC-BY License, same as the original license. You are free to share and adapt the dataset with proper attribution.

Datasets:

alexbeatson
/

c4_mm

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