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Haoyu Xu

4 accepted papers

2025

Efficient and Effective Prompt Tuning via Prompt Decomposition and Compressed Outer Product

NAACL 2025long

Prompt tuning (PT) offers a cost-effective alternative to fine-tuning large-scale pre-trained language models (PLMs), requiring only a few parameters in soft prompt tokens added before the input text. However, existing PT approaches face two significant issues: i They overlook intrinsic semantic ass…

2025

Exploiting the Index Gradients for Optimization-Based Jailbreaking on Large Language Models

COLING 2025main

Despite the advancements in training Large Language Models (LLMs) with alignment techniques to enhance the safety of generated content, these models remain susceptible to jailbreak, an adversarial attack method that exposes security vulnerabilities in LLMs. Notably, the Greedy Coordinate Gradient (G…

2025

Knowledge Decoupling via Orthogonal Projection for Lifelong Editing of Large Language Models

ACL 2025long

As large language models (LLMs) require continuous knowledge updates and the mitigation of hallucination issues in generated content, lifelong model editing has become a prominent research area. A mainstream knowledge editing method usually freezes LLM’s original parameters and adds extra trainable…