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20242026
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cs.CL2026

TextReg: Mitigating Prompt Distributional Overfitting via Regularized Text-Space Optimization

Lucheng Fu, Ye Yu, Yiyang Wang +4

Large language models (LLMs) are highly sensitive to the prompts used to specify task objectives and behavioral constraints. Many recent prompt optimization methods iteratively rew…

cs.CL2026

Preference Tuning as Spectral Update Reorganization

Peiyan Zhang, Haibo Jin, Liying Kang +1

Preference-based post-training is usually understood through endpoint behavior, yet the learned update that produces this behavior remains largely opaque. We study RLHF and related…

cs.CL2026

GUARD: Guideline Upholding Test through Adaptive Role-play and Jailbreak Diagnostics for LLMs

Haibo Jin, Ruoxi Chen, Peiyan Zhang +3

As Large Language Models (LLMs) become increasingly integral to various domains, their potential to generate harmful responses has prompted significant societal and regulatory conc…

cs.CL2026

Controlling Output Rankings in Generative Engines for LLM-based Search

Haibo Jin, Ruoxi Chen, Peiyan Zhang +4

The way customers search for and choose products is changing with the rise of large language models (LLMs). LLM-based search, or generative engines, provides direct product recomme…

cs.CL2025

JailbreakZoo: Survey, Landscapes, and Horizons in Jailbreaking Large Language and Vision-Language Models

Haibo Jin, Leyang Hu, Xinnuo Li +4

The rapid evolution of artificial intelligence (AI) through developments in Large Language Models (LLMs) and Vision-Language Models (VLMs) has brought significant advancements acro…

cs.CL2025

REVOLVE: Optimizing AI Systems by Tracking Response Evolution in Textual Optimization

Peiyan Zhang, Haibo Jin, Leyang Hu +5

Recent advancements in large language models (LLMs) have significantly enhanced the ability of LLM-based systems to perform complex tasks through natural language processing and to…