2 papers
math.PR2025
On the Dimension-Free Concentration of Simple Tensors via Matrix Deviation
Pedro Abdalla, Roman Vershynin
We provide a simpler proof of a sharp concentration inequality for subgaussian simple tensors obtained recently by Al-Ghattas, Chen and Sanz-Alonso. Our approach uses a matrix devi…
cs.CR2025
LLM Watermarking Using Mixtures and Statistical-to-Computational Gaps
Pedro Abdalla, Roman Vershynin
Given a text, can we determine whether it was generated by a large language model (LLM) or by a human? A widely studied approach to this problem is watermarking. We propose an unde…