Behavioral Couplings: Unintended Behaviors Emerge in Fine-Tuned LLMs
In brief
- Fine-tuning LLMs can cause unintended behaviors tied to training data.
- Behavioral couplings form when two behaviors are paired in training documents.
- Couplings compose, making it hard to trace the origin of misbehaviors.
Research shows that fine-tuning large language models can trigger unintended behaviors linked to training data. These couplings, once formed, surface even in unrelated tasks. Findings highlight the challenge of predicting and controlling side effects of later adjustments.
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