APC-GNN++: An Adaptive Patient-Centric GNN with Context-Aware Attention and Mini-Graph Explainability for Diabetes Classification
- URL: http://arxiv.org/abs/2512.18473v1
- Date: Sat, 20 Dec 2025 19:12:45 GMT
- Title: APC-GNN++: An Adaptive Patient-Centric GNN with Context-Aware Attention and Mini-Graph Explainability for Diabetes Classification
- Authors: Khaled Berkani,
- Abstract summary: APC-GNN++ is an adaptive patient-centric Graph Neural Network for diabetes classification.<n>We evaluate APC-GNN++ on a real-world diabetes dataset collected from a regional hospital in Algeria.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We propose APC-GNN++, an adaptive patient-centric Graph Neural Network for diabetes classification. Our model integrates context-aware edge attention, confidence-guided blending of node features and graph representations, and neighborhood consistency regularization to better capture clinically meaningful relationships between patients. To handle unseen patients, we introduce a mini-graph approach that leverages the nearest neighbors of the new patient, enabling real-time explainable predictions without retraining the global model. We evaluate APC-GNN++ on a real-world diabetes dataset collected from a regional hospital in Algeria and show that it outperforms traditional machine learning models (MLP, Random Forest, XGBoost) and a vanilla GCN, achieving higher test accuracy and macro F1- score. The analysis of node-level confidence scores further reveals how the model balances self-information and graph-based evidence across different patient groups, providing interpretable patient-centric insights. The system is also embedded in a Tkinter-based graphical user interface (GUI) for interactive use by healthcare professionals .
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