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Yo-Sub Han

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#artificial intelligence Preprint Oct 2026

Grammar-Guided Code Watermarking with Green Temperature

Large language model watermarking embeds detectable statistical signals during decoding, but the resulting changes to token probabilities can degrade generation quality. This trade-off is particularly important for code, where small changes in token selection can break syntax or alter program behavior. Existing code wa...

Hyundong Jin, Hyeseon An, Soohan Lim et al. · 0 citations
Preprint Sep 2026

SEW: Style-Encoded Watermarking of LLM-Generated Code

Code watermarking supports provenance tracking for code generated by LLMs. Modifying token selection to embed watermarks as an LLM generates code can create a trade-off between detectability and functional correctness. Other methods instead watermark completed code using predefined transformations or trained neural mod...

Soohan Lim, Hyundong Jin, Yo-Sub Han · 0 citations
Preprint Aug 2026

One Adapter Pair per Model: A Universal Activation Interface for Language Models

Activation-based tools are usually tied to one model's native hidden space, requiring probes, sparse autoencoders, and natural-language interpreters to be rebuilt or rediscovered for each new language model. We present a Universal Activation Bus, a framework that provides a common activation interface across compatible...

Su-Hyeon Kim, Jiwan Mun, Yo-Sub Han · 2 citations

Linguistics-Aware Non-Distortionary LLM Watermarking

LUNA is a linguistically adaptive watermark that combines model-free detection with single-token non-distortion under the standard random-key model, and is the only method that simultaneously achieves AUROC>0.99 and an absolute median perplexity shift below 0.1.

Shinwoo Park, Hyejin Park, Hyeseon An et al. · 0 citations

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