Speak, Memory: An Archaeology of Books Known to ChatGPT/GPT-4
On the map: LLM safety and security → Machine unlearning
Abstract (arXiv)
In this work, we carry out a data archaeology to infer books that are known to ChatGPT and GPT-4 using a name cloze membership inference query. We find that OpenAI models have memorized a wide collection of copyrighted materials, and that the degree of memorization is tied to the frequency with which passages of those books appear on the web. The ability of these models to memorize an unknown set of books complicates assessments of measurement validity for cultural analytics by contaminating test data; we show that models perform much better on memorized books than on non-memorized books for downstream tasks. We argue that this supports a case for open models whose training data is known.
Key facts. Cited by 125 papers in the map (data through 14 Oct 2026). Placed in Machine unlearning, one of 12 directions in LLM safety and security. Builds on 37 of its 71 references that are in the map. First posted on arXiv 28 Apr 2023.
Builds on
37 of 71 references.
References · 37
- 2018BERT: Pre-training of Deep Bidirectional Transformers for Language Understandingcited by 40,399
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- 2022OPT: Open Pre-trained Transformer Language Modelscited by 3,512
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- 2020Extracting Training Data from Large Language Modelscited by 2,189
- 2022BLOOM: A 176B-Parameter Open-Access Multilingual Language Modelcited by 1,984
- 2023Pythia: A Suite for Analyzing Large Language Models Across Training and Scalingcited by 1,786
- 2018Datasheets for Datasetscited by 1,386
- 2015Aligning Books and Movies: Towards Story-like Visual Explanations by Watching Movies and Reading Bookscited by 1,043
- 2019Generalization through Memorization: Nearest Neighbor Language Modelscited by 800
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- 2021Counterfactual Memorization in Neural Language Modelscited by 156
- 2020Question and Answer Test-Train Overlap in Open-Domain Question Answering Datasetscited by 138
- 2023Foundation Models and Fair Usecited by 116
- 2015The Goldilocks Principle: Reading Children's Books with Explicit Memory Representationscited by 108
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- 2021Memorization vs. Generalization: Quantifying Data Leakage in NLP Performance Evaluationcited by 70
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- 2016Who did What: A Large-Scale Person-Centered Cloze Datasetcited by 24
- 2020Living Machines: A study of atypical animacycited by 14
- 2022The COVID That Wasn't: Counterfactual Journalism Using GPTcited by 4
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Citing papers per year: 2023: 27; 2024: 38; 2025: 38; 2026: 22.
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