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Dataset · Hugging Face

jhu-clsp/mmBERT-midtraining-data

mmBERT Mid-training Data Phase 2 of 3: High-quality mid-training data mixture (600B tokens) with context extension to 8192 tokens. This dataset contains the mid-training phase data used to train all mmBERT encoder models. This phase focuses on higher quality data sources and extends the context length from 1024 to 8192 tokens. The data is provided in MDS format ready for use with Composer and the ModernBERT training repository. 📊 Data Composition Data Source… See the full description on the dataset page: https://huggingface.co/datasets/jhu-clsp/mmBERT-midtraining-data.

Author / organizationjhu-clsp
License (as declared)mit
Downloads16.5K (as reported by Hugging Face)
Likes1
Created10 August 2025
Last updated at source13 October 2025
pretrainingencodermultilingual
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