Yao, Haipeng, Bo Zhang, Peiying Zhang, and Maozhen Li. “A Novel Kernel for Text Classification Based on Semantic and Statistical Information”. COMPUTING AND INFORMATICS 37, no. 4 (November 7, 2018): 992–1010. Accessed February 8, 2023. https://www.cai.sk/ojs/index.php/cai/article/view/2018_4_992.