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Kewei Liao

4 accepted papers

2026

AFTER: Mitigating the Object Hallucination of LVLM via Adaptive Factual-Guided Activation Editing

ICLR 2026poster

Large Vision-Language Models (LVLMs) have achieved substantial progress in cross-modal tasks. However, due to language bias, LVLMs are susceptible to object hallucination, which can be primarily divided into category, attribute, and relation hallucination, significantly impeding the trustworthy AI a…

Cited by 0SourceScholar
2026

MEDA: Medical-Oriented Activation Editing for Hallucination Mitigation in Medical Large Vision-Language Model

ICML 2026poster

Medical Large Vision-Language Models (Med-LVLMs) suffer from severe hallucinations, posing critical safety risks in clinical deployment. Editing LVLM activations has shown promise for mitigating hallucination with minimal cost. However, due to the requirements of medical domain expertise, existing m…

Cited by 0SourceScholar
2026

Query-Routed Activation Editing with Truth-hierarchical Preference Optimization

AAAI 2026technical

Hallucination has emerged as a pivotal challenge of Large Language Models (LLMs) that generate plausible yet non‑factual content, significantly impeding the trustworthy AI applications in real-world scenarios like medical diagnosis and autonomous driving. Editing the internal activations of LLMs du

Cited by 0SourcePDFScholar
2025

Token-Aware Editing of Internal Activations for Large Language Model Alignment

EMNLP 2025

Intervening the internal activations of large language models (LLMs) provides an effective inference-time alignment approach to mitigate undesirable behaviors, such as generating erroneous or harmful content, thereby ensuring safe and reliable applications of LLMs. However, previous methods neglect