Sangodiah, A., T. Jee San, Y. Tien Fui, L. Ean Heng, R. K. Ayyasamy, and N. A Jalil. “Identifying Optimal Baseline Variant of Unsupervised Term Weighting in Question Classification Based on Bloom Taxonomy”. MENDEL, Vol. 28, no. 1, June 2022, pp. 8-22, https://mendel-journal.org/index.php/mendel/article/view/161.