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AI & Machine Learning · Advanced

Prompt Tuning

A PEFT method that learns continuous 'soft prompt' embeddings prepended to inputs while the model stays frozen.

Definition

Soft prompts are trainable vectors rather than words; p-tuning and prefix tuning are related techniques. They are very parameter-efficient but usually less powerful than LoRA.

Exam tip

Prompt tuning (learned vectors) is not the same as prompt engineering (written text).

Related terms