Author

Isabelle Augenstein

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#artificial intelligence Preprint Sep 2026

From Concept Alignment to Causal Grounding: An Intervention Test of Chain-of-Thought Faithfulness

Chain-of-thought (CoT) can sound plausible yet be unfaithful to the model's underlying reasoning. Most prior work probes CoT faithfulness through input--output behavior or input attributions, leaving internal computation largely underexplored. We instead cast faithfulness as internal concept grounding: Does a large lan...

Qianli Wang, Yilong Wang, Dennis Wei et al. · 0 citations

#artificial intelligence Nov 2025

Multi-Step Knowledge Interaction Analysis via Rank-2 Subspace Disentanglement

This work proposes a novel rank-2 projection subspace that disentangles PK and CK contributions more accurately and uses it for the first multi-step analysis of knowledge interactions across longer NLE sequences, revealing that hallucinated generations exhibit strong alignment with the PK direction, though context-fait...

Sekh Mainul Islam, Pepa Atanasova, Isabelle Augenstein · arXiv.org · 2 citations