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Yuanchen Bei

3 accepted papers

2025

A Survey of RAG-Reasoning Systems in Large Language Models

EMNLP 2025

Retrieval-Augmented Generation (RAG) lifts the factuality of Large Language Models (LLMs) by injecting external knowledge, yet it falls short on problems that demand multi-step inference; conversely, purely reasoning-oriented approaches often hallucinate or mis-ground facts. This survey synthesizes

Cited by 0SourcePDFScholar
2025

Understanding and Enhancing Message Passing on Heterophilic Graphs via Compatibility Matrix

NeurIPS 2025poster

Graph Neural Networks (GNNs) excel in graph mining tasks thanks to their message-passing mechanism, which aligns with the homophily assumption. However, connected nodes can also exhibit inconsistent behaviors, termed heterophilic patterns, sparking interest in heterophilic GNNs (HTGNNs). Although th…

Cited by 0SourceScholar
2024

Fine Tuning Out-of-Vocabulary Item Recommendation with User Sequence Imagination

NeurIPS 2024spotlight

Recommending out-of-vocabulary (OOV) items is a challenging problem since the in-vocabulary (IV) items have well-trained behavioral embeddings but the OOV items only have content features. Current OOV recommendation models often generate 'makeshift' embeddings for OOV items from content features and…

Cited by 3SourcePDFScholar