Abstract:Handling class imbalance remains a central challenge in machine learning, particularly in pattern recognition tasks where identifying rare but critical anomalies is of paramount importance. Traditional generative models often decouple data synthesis from classification,leading to a distribution mismatch that limits their practical benefit. To address these shortcomings, we introduce Causal Cooperative Networks (CCNETS), a modular framework that establishes a functional causal link between generation, inference, and reconstruction. CCNETS is composed of three specialized cooperative modules: an Explainer for latent feature abstraction, a Reasoner for probabilistic label prediction, and a Producer for context-aware data synthesis. These components interact through a dynamic causal feedback loop, where classification outcomes directly guide targeted sample synthesis to adaptively reinforce vulnerable decision boundaries. A key innovation, our proposed Zoint mechanism, enables the adaptive fusion of latent and observable features, enhancing semantic richness and decisionmaking robustness under uncertainty. We evaluated CCNETS on two distinct real-world datasets: Credit Card Fraud Detection dataset, characterized by extreme imbalance (fraud rate < 0.2%), and the AI4I 2020 Predictive Maintenance dataset (failure rate < 4%). Across comprehensive experimental setups, CCNETS consistently outperformed baseline methods, achieving superior F1-scores, and AUPRC. Furthermore, data synthesized by CCNETS demonstrated enhanced generalization and learning stability under limited data conditions. These results establish CCNETS as a scalable, interpretable, and hybrid soft computing framework that effectively aligns synthetic data with classifier objectives, advancing robust imbalanced learning.
| Comments: | 45 pages, 12 figures, Hunhee Kim is Corresponding Author |
| Subjects: | Machine Learning (cs.LG) |
| Cite as: | arXiv:2401.04139 [cs.LG] |
| (or arXiv:2401.04139v4 [cs.LG] for this version) | |
| https://doi.org/10.48550/arXiv.2401.04139 arXiv-issued DOI via DataCite |
From: Hoon-Hee Kim Prof [view email]
[v1]
Sun, 7 Jan 2024 14:41:31 UTC (824 KB)
[v2]
Fri, 26 Jan 2024 03:49:07 UTC (803 KB)
[v3]
Fri, 30 May 2025 04:50:47 UTC (1,604 KB)
[v4]
Mon, 4 May 2026 03:44:44 UTC (1,829 KB)
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