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Author

Takashi Ishida

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#natural language process... Preprint Sep 2026

DenMark: Robust Semantic Watermarking for Diffusion Language Models

Semantic text watermarks encode signals in meaning rather than surface token choices, offering robustness to paraphrasing and other semantic-preserving edits. Existing semantic watermarking methods are primarily designed for autoregressive language models (ARLMs), where completed candidate units can be generated and sc...

Tian-Hao Ma, Weihao Xuan, Dong-Dong Wu et al. · 0 citations
#machine learning Preprint Sep 2026

Bayes-Optimal BER and AUC: Estimation and Evaluation of Estimators

A fundamental quantity in machine learning is the optimal performance achievable by any model on a given task. Estimating this quantity allows us to distinguish the irreducible part of the error from a deficiency of the model, telling us how much room for improvement remains. Recent work has shown that the Bayes error,...

Ryota Ushio, Takashi Ishida, Masashi Sugiyama · 0 citations

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