Author

Fahad Shamshad

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#natural language process... Preprint Oct 2026

Noise Out, Bias In: Targeted Bias Injection in Diffusion Language Models via Closed-Loop Activation Steering

Masked diffusion language models (dLLMs) generate text by iteratively denoising masked positions, re-predicting each token multiple times before it is committed. An autoregressive decoder exposes an answer's distribution once, at the step that commits it; a dLLM exposes it at every denoising step before commitment, and...

Sarim Hashmi, Mukul Ranjan, Abdelrahman W. A. Elsayed et al. · 0 citations

Preprint Oct 2026

Anti-Persona: Disrupting Unauthorized Identity Binding and Recognition in Personalized Vision--Language Models

Few-shot personalization enables large vision--language models (LVLMs) to learn user-specific visual concepts for applications such as personalized retrieval and subject-aware querying. However, it also creates a privacy risk: an adversary can bind a target identity from a few reference images and subsequently detect t...

Abhishek Basu, Fahad Shamshad, Karthik Nandakumar · 0 citations