Author

T. Nguyen

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Conference Aug 2026

A Hybrid Two-Stage Framework for Twitter Bot Detection: Decoupling Graph Representation Learning and Classification

Graph-based Twitter bot detection models such as BotRGCN rely on end-to-end training that jointly optimizes graph representation learning and linear classification. This coupling creates a bottleneck: the GNN is constrained to produce linearly separable representations, and joint optimization restricts the classifier t...

Khôi Nguyên Phạm, Ngoc Thao Vy Tran, T. Nguyen et al. · International Conference on... · 0 citations

Open access 2026

Metric-Driven Reinforcement Learning for Object Hallucination Reduction in LVLM-Based Image Captioning

A reinforcement learning framework to mitigate object hallucination in LVLM-based image captioning, driven entirely by natural language processing (NLP) metrics, and can enhance caption quality by incorporating complementary evaluation metrics such as BERTScore and METEOR.

T. Nguyen, Hee Suk Yoon, T. Luu et al. · IEEE Access · 0 citations