SAIKAEW, K. R., POLTREE, S., CHAIPAH, K., & HARUECAIYASAK, C. (2015). Improving Answer Retrieval from Web Forums with Topic Model and Ontology. Walailak Journal of Science and Technology (WJST), 13(6), 451–463. Retrieved from https://wjst.wu.ac.th/index.php/wjst/article/view/1417