M.Jayanthi, Santhalakshmi M, Janarthanam S. “Hierarchical Ensemble Learning With Adaptive Sampling for Rice Phenological Stage Detection under Class Distribution Skewness”. Journal of Online Engineering Education, vol. 17, no. 2, Sept. 2026, pp. 106-15, https://www.onlineengineeringeducation.com/index.php/joee/article/view/142.