Pan J, Liu Y, Zheng X, Zheng Y, Liew AW-C, Li F, et al. A Label-free Heterophily-guided Approach for Unsupervised Graph Fraud Detection. AAAI [Internet]. 2025 Apr. 11 [cited 2026 May 10];39(12):12443-51. Available from: https://ojs.aaai.org/index.php/AAAI/article/view/33356