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Arya Fayyazi

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#artificial intelligence Preprint Oct 2026

The Agent Knew: Internal States Forecast Unauthorized Actions and Stop Them, and the Lies That Follow

Language-model agents sometimes act beyond their authorization and then misreport what they did. On CAPE-Bench, matched agent tasks in which one fact decides whether an action is authorized, frontier open-weight agents do both, and one behavior marks the lie: retroactive permission laundering, acting and then asking pe...

Arya Fayyazi, M. Kamal, M. Pedram · 2 citations
#artificial intelligence Preprint Oct 2026

The Sharp Directions Are Against You: Curvature Analysis of Activation Steering

Activation steering adds a vector to a language model's internal representations at inference time. It is a lightweight alternative to fine-tuning for behavioral control. The standard construction, contrastive activation addition (CAA), is fragile, as on many inputs it shifts behavior in the wrong direction. To explain...

Seyedarmin Azizi, Arya Fayyazi, Parsa Razmara et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Sharpen Without Search: On-Policy Distillation of Sequence-Level Power Distribution

A language model can give a correct answer more probability than any single incorrect answer and still usually sample an incorrect one, because the incorrect answers together hold more probability. The power distribution raises each complete answer's probability to a power above one and renormalizes, shifting probabili...

Erfan Baghaei Potraghloo, Seyedarmin Azizi, Arya Fayyazi et al. · 0 citations
Preprint Aug 2026

Fair on the Surface? Benchmarking Hidden-Output Fairness Gaps in LLM Recommenders

Fairness audits for LLM-based recommenders have largely focused on observable outputs, implicitly assuming that stable recommendations reflect stable internal processing. We challenge this assumption with FairGap, the first benchmark to jointly evaluate recommendation fairness at two levels: observable output shift (OB...

Changyu Lu, Arya Fayyazi, Junhao Zhang et al. · 0 citations

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