BERT has a Mouth, and It Must Speak: BERT as a Markov Random Field Language Model

02/11/2019

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by   Alex Wang, et al.

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We show that BERT (Devlin et al., 2018) is a Markov random field language model. Formulating BERT in this way gives way to a natural procedure to sample sentence from BERT. We sample sentences from BERT and find that it can produce high-quality, fluent generations. Compared to the generations of a traditional left-to-right language model, BERT generates sentences that are more diverse but of slightly worse quality.