Delta-Crosscoder: Robust Crosscoder Model Diffing in Narrow Fine-Tuning Regimes
arXiv:2603.04426v1 Announce Type: new Abstract: Model diffing methods aim to identify how fine-tuning changes a model’s internal representations. Crosscoders approach this by learning shared dictionaries of interpretable latent directions between base and fine-tuned models. However, existing formulations struggle with narrow…
