Correlation

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Descriptive Statistics

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PCA

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Regression

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250 Documents Can Plant a Permanent Backdoor in AI: The Real Threat of Training Data Poisoning

Anthropic, the UK AI Safety Institute, and the Alan Turing Institute have demonstrated that inserting just 250 carefully crafted documents into training data can plant a permanent backdoor in LLMs ranging from 600M to 13B parameters. Bigger models and more data do not dilute the poison.