Zhefan Wang

ROGRAG: A Robustly Optimized GraphRAG Framework

2025 · arXiv (Cornell University)

Large language models (LLMs) commonly struggle with specialized or emerging topics which are rarely seen in the training corpus. Graph-based retrieval-augmented generation (GraphRAG) addresses this by structuring domain knowledge as a graph for dynamic retrieval. …

Research on English oral classroom instruction design in teacher-AI collaborative models

2026 · International Journal of Reasoning-based Intelligent Systems

This study systematically explored the integration pathways and practical efficacy of artificial intelligence technology in English oral communication instruction by establishing a dual-subject collaborative teaching model featuring 'teacher-led instruction with AI empowerment'.A three-stage instructional framework …