HiLoMix: Robust High- and Low-Frequency Graph Learning Framework for Mixing Address Association

• URL: http://arxiv.org/abs/2511.07759v2
• Date: Sun, 16 Nov 2025 03:39:19 GMT
• Title: HiLoMix: Robust High- and Low-Frequency Graph Learning Framework for Mixing Address Association
• Authors: Xiaofan Tu, Tiantian Duan, Shuyi Miao, Hanwen Zhang, Yi Sun,
• Abstract summary: Mixing services are increasingly being exploited by malicious actors for illicit transactions.<n>We propose HiLoMix, a graph-based learning framework specifically designed for mixing address association.<n> Experimental results demonstrate that HiLoMix outperforms existing methods in mixing address association.
• Score: 4.848214568017272
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: As mixing services are increasingly being exploited by malicious actors for illicit transactions, mixing address association has emerged as a critical research task. A range of approaches have been explored, with graph-based models standing out for their ability to capture structural patterns in transaction networks. However, these approaches face two main challenges: label noise and label scarcity, leading to suboptimal performance and limited generalization. To address these, we propose HiLoMix, a graph-based learning framework specifically designed for mixing address association. First, we construct the Heterogeneous Attributed Mixing Interaction Graph (HAMIG) to enrich the topological structure. Second, we introduce frequency-aware graph contrastive learning that captures complementary structural signals from high- and low-frequency graph views. Third, we employ weak supervised learning that assigns confidence-based weighting to noisy labels. Then, we jointly train high-pass and low-pass GNNs using both unsupervised contrastive signals and confidence-based supervision to learn robust node representations. Finally, we adopt a stacking framework to fuse predictions from multiple heterogeneous models, further improving generalization and robustness. Experimental results demonstrate that HiLoMix outperforms existing methods in mixing address association.

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