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Glossary: Fine-tuning LLMs

DPO (direct preference optimization)

Also written: DPO, direct preference optimization

Preference tuning done in one ordinary training loop. It pushes the model to make the chosen answer likelier than the rejected one, relative to a frozen reference model.

Where the book teaches it

Related terms

Preference tuningReference modelBetaRewards (in DPO logs)RLHF