Jyothi, K., Srinu, N., Babu, D. B., & Manda, R. (2026). An expanding window temporal validation framework for global AQI and PM2.5 forecasting using machine learning and deep learning models . International Journal of Artificial Intelligence and Machine Learning, 6(8s), 1090–1100. https://doi.org/10.51483/IJAIML.6.8s.2026.1090-1100