Author

Mohammad Mahdi Abootorabi

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Preprint Sep 2026

Weakly Supervised Spatial Grounding for Discriminative Attention-Based Ultrasound-Histopathology Alignment in Prostate Cancer Grading

Unpaired cross-modal distillation transfers grade structure from histopathology into a micro-ultrasound (micro-US) encoder by aligning a pooled needle-region embedding to a frozen histopathology teacher under grade-group correspondence alone. A single objective is thereby required to serve two distinct functions: rende...

O. Dzikunu, E. Willis, Mohammad Mahdi Abootorabi et al. · 0 citations

#artificial intelligence Preprint Sep 2026

Steering Geometry: Validating Human Value Geometry in LLM Steering Space

As large language models (LLMs) are increasingly deployed in alignment-sensitive contexts, activation steering has emerged as a lightweight, inference-time alternative to fine-tuning methods (e.g., RLHF, DPO) for behavioral control. However, existing work typically validates steering on isolated behaviors, leaving it u...

Mohammad Mahdi Abootorabi, Armin Saghafian, Ali Bazshoushtari et al. · 0 citations