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Ze-Zheng Wu

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#natural language process... Preprint Sep 2026

LA-CPD: Local-Evidence-Aware Change-Point Detection for Human-LLM Authorship Segmentation

LA-CPD is proposed, a structured method that transforms noisy sentence-level score sequences into coherent authorship segments and outperforms WCP+AIC, increasing sentence-level accuracy from 0.747 to 0.796 while improving boundary localization and LLM-span delineation.

Qing Yang, Zhen-Yun Mao, Zi-Xiang Luo et al. · 0 citations
#natural language process... Preprint Sep 2026

C-HAT-Bench: Benchmarking Chinese AI-Text Detection Beyond Fully Generated Text

Large Language Models (LLMs) increasingly participate in writing by modifying or extending human drafts, causing machine involvement to vary in both form and extent. Yet most Machine-Generated Text (MGT) detectors are evaluated only on fully human-written versus fully AI-generated text. Because human--AI collaboration...

Qing Yang, Zi-Xiang Luo, Zhen-Yun Mao et al. · 0 citations
Preprint Aug 2026

Trajectory-Guided Forget-Recover Network for Continual LLM Unlearning

The Trajectory-guided Forget-Recover Network (TFR-Net) is proposed, which separates persistent target-related channels from transient hotspots and suppresses only the persistent ones, and achieves a more favorable trade-off between unlearning effectiveness and retained utility than representative baselines.

Ze-Zheng Wu, Xing-He Cheng, Qing-Gang Zhang et al. · 0 citations

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