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Mayi Xu

9 accepted papers

2026

Format as a Prior: Quantifying and Analyzing Bias in LLMs for Heterogeneous Data

AAAI 2026technical

Large Language Models (LLMs) are increasingly employed in applications that require processing information from heterogeneous formats, including texts, tables, infoboxes, and knowledge graphs. However, systematic biases toward particular formats may undermine LLMs

Cited by 0SourcePDFScholar
2026

Privacy-protected Retrieval-Augmented Generation for Knowledge Graph Question Answering

AAAI 2026technical

Large Language Models (LLMs) often suffer from hallucinations and outdated or incomplete knowledge. Retrieval-Augmented Generation (RAG) is proposed to address these issues by integrating external knowledge like that in knowledge graphs (KGs) into LLMs. However, leveraging private KGs in RAG systems

Cited by 0SourcePDFScholar
2025

A Survey on Training-free Alignment of Large Language Models

EMNLP 2025

The alignment of large language models (LLMs) aims to ensure their outputs adhere to human values, ethical standards, and legal norms. Traditional alignment methods often rely on resource-intensive fine-tuning (FT), which may suffer from knowledge degradation and face challenges in scenarios where t

Cited by 0SourcePDFScholar
2025

Aligning VLM Assistants with Personalized Situated Cognition

ACL 2025long

Vision-language models (VLMs) aligned with general human objectives, such as being harmless and hallucination-free, have become valuable assistants of humans in managing visual tasks. However, people with diversified backgrounds have different cognition even in the same situation. Consequently, they…

2025

CAVGAN: Unifying Jailbreak and Defense of LLMs via Generative Adversarial Attacks on their Internal Representations

ACL 2025finding

Security alignment enables the Large Language Model (LLM) to gain the protection against malicious queries, but various jailbreak attack methods reveal the vulnerability of this security mechanism. Previous studies have isolated LLM jailbreak attacks and defenses. We analyze the security protection…

2025

Enhancing Relation Extraction via Supervised Rationale Verification and Feedback

AAAI 2025technical

Despite the rapid progress that existing automated feedback methods have made in correcting the output of large language models (LLMs), these methods cannot be well applied to the relation extraction (RE) task due to their designated feedback objectives and correction manner. To address this problem…

2025

Strong Empowered and Aligned Weak Mastered Annotation for Weak-to-Strong Generalization

AAAI 2025technical

The super-alignment problem of how humans can effectively supervise super-human AI has garnered increasing attention. Recent research has focused on investigating the weak-to-strong generalization (W2SG) scenario as an analogy for super-alignment. This scenario examines how a pre-trained strong mode…

2024

Adaption-of-Thought: Learning Question Difficulty Improves Large Language Models for Reasoning

EMNLP 2024main

Large language models (LLMs) have shown excellent capability for solving reasoning problems. Existing approaches do not differentiate the question difficulty when designing prompting methods for them. Clearly, a simple method cannot elicit sufficient knowledge from LLMs to answer a hard question. Me…

2024

Prompting Large Language Models for Counterfactual Generation: An Empirical Study

COLING 2024main

Large language models (LLMs) have made remarkable progress in a wide range of natural language understanding and generation tasks. However, their ability to generate counterfactuals has not been examined systematically. To bridge this gap, we present a comprehensive evaluation framework on various t…

Cited by 23SourcePDFScholar