Author

Zi-Yi Zhang

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#machine learning May 2026

SAHG: Sector-Anisotropic Hyperbolic Graph Model for Social Bot Detection

SAHG (Sector-Anisotropic Hyperbolic Graph) learns a direction-dependent curvature field $\gamma(u)$ that adapts geometric resolution across structural directions, and uses sector prototypes to convert angular concentration and alignment into classifier-readable features.

Han-Ning Lu, Ying-Guang Yang, Jinwei Su et al. · arXiv.org · 1 citation

Sep 2026

Bias Mitigation in Federated Learning Through Feature Integration

Machine learning models are trained on datasets where undesired features have spurious correlations with the target variable, resulting in the bias shifts of the model output to a different class. In federated learning (FL), a common problem is data distribution skew. Since each client has a different distribution, mod...

Zi-Yi Zhang, Ming-Xuan Ouyang, Kun-Hao Li et al. · ACM Transactions on Knowledg... · 0 citations