Infra2Graph prototype for bridge impact assessment in city scale. The system integrates heterogeneous graph analysis and HGNN-based closure-impact prediction, with Exp-4-lite (kNN, no edge attributes, weak quantile-based weighting) adopted as the reference MVP configuration.

🚀 Vamana-based approximate k-nearest neighbor search with filtered extensions. Implements SIGMOD 2023 contest specifications with performance optimizations.