AIBullisharXiv – CS AI · 7h ago7/10
🧠
Feature Identification via the Empirical NTK
Researchers demonstrate that eigenanalysis of the empirical neural tangent kernel (eNTK) can identify learned feature directions in neural networks, from simple MLPs to large language models like Gemma-3-270M. The method shows strong alignment with known algorithmic features in modular arithmetic tasks and grammatical features in language models, outperforming PCA-based approaches and offering a new mechanistic interpretability tool.