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Radu State

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#machine learning Preprint Sep 2026

Retrieval Capacity of Self-Attention Under Competition

How many tokens from its context does a language model actually use, and what determines that number? We study this question through self-attention. Without retraining, we retain only the tokens with the highest attention weights at each head, layer, and query, keeping their original weights unchanged. By varying the s...

Timur Mudarisov, M. Burtsev, Radu State · 0 citations
#machine learning Preprint Sep 2026

The Geometry of Inference in Transformer Residual Streams

Transformer language models build predictions through successive residual updates, but how their representations become specific to an eventual outcome remains unclear. We study this process by comparing intermediate residual states with their own final states and an empirical bank of final states from other contexts....

Timur Mudarisov, M. Burtsev, Radu State · 0 citations
#artificial intelligence Preprint Sep 2026

HINT-Plan: Human Intention-Aware Robot Task Planning in Context-Rich Environments using Vision Language Models

Approaches to incorporating human awareness into mobile robot decision-making mainly focus on collision avoidance in low-level motion planning, often overlooking the challenges posed by human presence and high-level behavior. To address this vacancy, we present HINT-Plan, a novel approach to integrate human intention p...

Yu-Chen Liu, Luigi Palmieri, Lujun Li et al. · 0 citations
Conference Jul 2026

PRISM: A Lightweight Method for Jailbreak Detection via Prompt-Response Semantic Coherence Scoring in LLMs

Detecting whether a jailbreak attack against a large language model (LLM) has succeeded is a challenging problem in AI security. Existing approaches rely on brittle string matching, expensive LLM-based judges, or task-specific classifiers that often fail to generalize. This paper investigates whether semantic coherence...

Costabile Di Gregorio, Lama Sleem, Jérôme François et al. · 0 citations

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