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Michael Shieh

7 accepted papers

2025

LongPO: Long Context Self-Evolution of Large Language Models through Short-to-Long Preference Optimization

ICLR 2025poster

Large Language Models (LLMs) have demonstrated remarkable capabilities through pretraining and alignment. However, superior short-context LLMs may underperform in long-context scenarios due to insufficient long-context alignment. This alignment process remains challenging due to the impracticality o…

2025

MixEval-X: Any-to-any Evaluations from Real-world Data Mixture

ICLR 2025spotlight

Perceiving and generating diverse modalities are crucial for AI models to effectively learn from and engage with real-world signals, necessitating reliable evaluations for their development. We identify two major issues in current evaluations: (1) inconsistent standards, shaped by different communit…

Cited by 3SourcePDFScholar
2025

Understanding and Enhancing Safety Mechanisms of LLMs via Safety-Specific Neuron

ICLR 2025poster

Safety alignment for large language models (LLMs) has become a critical issue due to their rapid progress. However, our understanding of effective safety mechanisms in LLMs remains limited, leading to safety alignment training that mainly focuses on improving optimization, data-level enhancement, or…

Cited by 0SourcePDFScholar
2024

Accelerating Greedy Coordinate Gradient and General Prompt Optimization via Probe Sampling

NeurIPS 2024poster

Safety of Large Language Models (LLMs) has become a central issue given their rapid progress and wide applications. Greedy Coordinate Gradient (GCG) is shown to be effective in constructing prompts containing adversarial suffixes to break the presumingly safe LLMs, but the optimization of GCG is tim…

2024

Advancing Adversarial Suffix Transfer Learning on Aligned Large Language Models

EMNLP 2024main

Language Language Models (LLMs) face safety concerns due to potential misuse by malicious users. Recent red-teaming efforts have identified adversarial suffixes capable of jailbreaking LLMs using the gradient-based search algorithm Greedy Coordinate Gradient (GCG). However, GCG struggles with comput…

2024

Prompt Optimization via Adversarial In-Context Learning

ACL 2024long

We propose a new method, Adversarial In-Context Learning (adv-ICL), to optimize prompts for in-context learning (ICL). Inspired by adversarial learning, adv-ICL is implemented as a two-player game between a generator and discriminator, with LLMs acting as both. In each round, given an input prefixed…