Feng, Ruochen, Yunlong Xia, and Weiwen Huang. “Forecasting Tobacco Sales Trends Based on Combined Xgboost-Lightgbm Modeling”. Journal of Education, Humanities and Social Sciences 55 (July 17, 2025): 123–133. Accessed September 11, 2026. https://jehss.com/index.php/ojs/article/view/261.