mlsanityData to 14 Oct 2026

Probing BERT's priors with serial reproduction chains

arXiv 2202.12226 ↗First posted 24 Feb 2022cs.CLcited by 11

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Abstract (arXiv)

Sampling is a promising bottom-up method for exposing what generative models have learned about language, but it remains unclear how to generate representative samples from popular masked language models (MLMs) like BERT. The MLM objective yields a dependency network with no guarantee of consistent conditional distributions, posing a problem for naive approaches. Drawing from theories of iterated learning in cognitive science, we explore the use of serial reproduction chains to sample from BERT's priors. In particular, we observe that a unique and consistent estimator of the ground-truth joint distribution is given by a Generative Stochastic Network (GSN) sampler, which randomly selects which token to mask and reconstruct on each step. We show that the lexical and syntactic statistics of sentences from GSN chains closely match the ground-truth corpus distribution and perform better than other methods in a large corpus of naturalness judgments. Our findings establish a firmer theoretical foundation for bottom-up probing and highlight richer deviations from human priors.

Key facts. Cited by 11 papers in the map (data through 14 Oct 2026). Builds on 32 of its 57 references that are in the map. First posted on arXiv 24 Feb 2022.

Builds on

32 of 57 references.

References · 32

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20 more
  1. 2020Evaluation of Text Generation: A Surveycited by 277
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Cited by year (2026 to 14 Oct)

Citing papers per year: 2022: 2; 2023: 4; 2024: 3; 2025: 1; 2026: 1.

11 papers.