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Xiangfeng Luo

5 accepted papers

2025

Context-aware Graph Neural Network for Graph-based Fraud Detection with Extremely Limited Labels

AAAI 2025technical

Graph-based fraud detection is crucial in identifying illegal activities in social networks, finance, and other sectors. Despite recent progress in this area, most of current researches typically require a large amount of annotated data to demonstrate its benefits. In practice, obtaining sufficient…

Cited by 0SourcePDFScholar
2025

HDiff: Confidence-Guided Denoising Diffusion for Robust Hyper-relational Link Prediction

EMNLP 2025

Although Hyper-relational Knowledge Graphs (HKGs) can model complex facts better than traditional KGs, the Hyper-relational Knowledge Graph Completion (HKGC) is more sensitive to inherent noise, particularly struggling with two prevalent HKG-specific noise types: Intra-fact Inconsistency and Cross-f

Cited by 0SourcePDFScholar
2025

Improving Knowledge Base Question Answering via Retrieval Enhancement and Stepwise Reasoning

ICASSP 2025accepted

The large-scale knowledge base question-answering (KBQA) has become increasingly vital across various fields. In the era of large language models (LLMs), leveraging knowledge base retrieval combined with large models for knowledge reasoning has become the mainstream approach for KBQA. However, this…

Cited by 0SourceScholar
2024

COSIGN: Contextual Facts Guided Generation for Knowledge Graph Completion

NAACL 2024long

Knowledge graph completion (KGC) aims to infer missing facts based on existing facts within a KG. Recently, research on generative models (GMs) has addressed the limitations of embedding methods in terms of generality and scalability. However, GM-based methods are sensitive to contextual facts on KG…

Cited by 8SourcePDFScholar