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cs.SE2026
LumiXAI: A Modular Full-Stack Framework for Feature Attribution
Alfio Ferrara, Lorenzo Gatta, Sergio Picascia +1
Feature attribution is a central tool of model interpretability, yet the software through which it is applied remains fragmented: individual tools specialize along narrow axes, suc…
cs.AI2026
Refusal Beyond a Single Direction: A Preliminary Comparison of Diff-in-Means and INLP
Elisabetta Rocchetti, Alfio Ferrara
Arditi et al. (2024) has shown that refusal in safety fine-tuned chat models is mediated by a single linear direction in the residual stream, recoverable by a difference-in-means (…
cs.AI2026
How LLMs Follow Instructions: Skillful Coordination, Not a Universal Mechanism
Elisabetta Rocchetti, Alfio Ferrara
Instruction tuning is commonly assumed to endow language models with a domain-general ability to follow instructions, yet the underlying mechanism remains poorly understood. Does i…