Delta Activations embed finetuned LLMs as the average difference in hidden states between the finetuned model and its base model on a small set of generic prompts, yielding domain clusters and approximate additive composition.
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Delta Activations: A Representation for Finetuned Large Language Models
Delta Activations embed finetuned LLMs as the average difference in hidden states between the finetuned model and its base model on a small set of generic prompts, yielding domain clusters and approximate additive composition.