Author

H. Nguyen

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Conference Aug 2026

Graph-based Multi-Agent LLM Framework for OCR-based Visual Question Answering

Recent advances in Large Language Models (LLMs) have improved reasoning in multimodal tasks such as Visual Question Answering (VQA). However, in OCR-centric scenarios such as signboard VQA, existing approaches remain vulnerable to hallucination, weak verification, and inconsistent reasoning when integrating visual and...

T. Dang, H. Nguyen, Kiet Van Nguyen · International Conference on... · 0 citations

Jul 2026

Token-Level Diagnosis of Sycophancy in LLMs with Attribution-Guided Steering

The ASI is introduced, an Integrated Gradients-based token attribution method, which measures the degree to which a model's decision is driven by authority-related text, and a attribution-guided contrastive activation steering method is proposed to mitigate LLM sycophancy.

H. Nguyen, M. Kamruzzaman, Anshuman Chhabra et al. · arXiv.org · 1 citation