Encoders · 2018

BERT: Pre-training of Deep Bidirectional Transformers

Jacob Devlin, Ming-Wei Chang, Kenton Lee, Kristina Toutanova

Introduced BERT, a Transformer encoder pre-trained with masked-language-modeling and next-sentence prediction to produce deeply bidirectional representations usable across tasks via light fine-tuning.

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Plain-language summary

BERT pre-trains an encoder by masking random tokens and predicting them from both left and right context, unlike the left-to-right models of the GPT line, plus a next-sentence-prediction objective. The resulting representations condition each token on the full surrounding sentence, and a single added output layer fine-tunes the model for classification, tagging, or span-based question answering. It set new results on GLUE and SQuAD and became the standard encoder for understanding-oriented NLP tasks.

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Record ID
P-013
Record created
2026-07-13
Last reviewed
2026-07-14
Record version
2

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