Pane, S. F.; Zain, R. N.; Setiawan, I.; Putratama, V. Predicting the Happiness Index Based on the HDI Indicator in Indonesia Using the Ensemble Learning Approach: Prediksi Indeks Kebahagiaan Berdasarkan Indikator IPM Di Indonesia Menggunakan Pendekatan Ensemble Learning. Nuansa Informatika 2025, 19, 105-114.