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Author

Hong Chen

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Preprint Aug 2026

TwinKV: A Composable Repair Pass for KV Cache Eviction via Pairwise Key Redundancy

TwinKV, a training-free method that discounts value energy by nonlocal post-RoPE key frequency, is introduced, showing that modest frequency corrections can change retention and answering outcomes, with effects that depend on the model and task.

Hong Chen, Yuan Zeng, Yong-Wei Huang et al. · 0 citations

SemTrace: Source-Grounded Semantic Signatures for Tracing LLM Exposure to Protected Documents

SemTrace is introduced, a source-grounded semantic watermark for detecting whether a generated review was influenced by a known protected manuscript copy, and targets model-agnostic, assigned-copy exposure detection while keeping the watermark semantically tied to the source document.

Jun-Yan Zhang, Yuan Zeng, Yong-Wei Huang et al. · 0 citations
Preprint Aug 2026

DocTrace: Towards Traceable Long Document VQA via Hierarchical Evidence Graph Reasoning

This paper proposes DocTrace, a hierarchical framework that progressively performs evidence localization, structured document parsing, and evidence graph reasoning to enable explicit evidence provenance, and develops a two-stage training framework.

Lei Xiang, Zhi-Cheng Guan, Hong Chen et al. · 0 citations

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