F, N. and Vignesh, R. 2026. A Hybrid TF-IDF And Roberta Feature Fusion Framework With Bilstm-Attention For Multi-Platform Depression Detection and Severity Classification With Explainable AI. International Journal of Artificial Intelligence and Machine Learning. 6, 3 (Sep. 2026), 547–566. DOI:https://doi.org/10.51483/IJAIML.6.3.2026.547-566.