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Mohamed Amine Merzouk

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#artificial intelligence Preprint Oct 2026

GrayShield: Bit-Level Sanitization for Transformer Model Supply-Chain Security

Transformer models such as BERT and Vision Transformer~(ViT) achieve strong performance via densely parameterized attention backbones. However, the least significant bits~(LSBs) of their 32-bit floating-point weights can be abused as covert channels to conceal malicious payloads, posing a serious threat to the AI model...

A. Foundjem, Tsung-Hsien Chuang, F. Khomh et al. · 0 citations
#artificial intelligence Review Sep 2026

Quantifying Overclaiming Propensity in Frontier LLM Agents

This work operationalizes overclaiming as a final response that reports work that the agent's own transcript shows it did not do, for example, claiming to have read a file it never opened, showing that claims of completion can conceal substantive failures.

Nolan Smyth, Yorguin-Jose Mantilla-Ramos, Pascal Junior Tikeng Notsawo et al. · 2 citations · ⚡1
Preprint Jul 2026

Efficient Safety Alignment of Language Models via Latent Personality Traits

Latent Personality Alignment (LPA) is introduced, which replaces explicit harm refusal with adversarial training on just 66 harm-agnostic statements drawn from psychometric personality literature, hypothesizing that personality-anchored representations share latent structure with harm avoidance, so adversarially stabil...

Mohamed Amine Merzouk, Nolan Smyth, Damiano Fornasiere et al. · 0 citations
Preprint Jul 2026

How Much is Left? LLMs Linearly Encode Their Remaining Output Length

Training minimal-capacity linear probes on frozen hidden states of three open-weight 7-8B models across seven completion-style datasets finds three converging pieces of evidence that LLMs maintain a plan-like internal representation of output length, interpreted as evidence that LLMs maintain a plan-like internal repre...

Mohamed Amine Merzouk, Dmitri Carpov, Mirko Bronzi et al. · 1 citation

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