LEI, Y., W. . ZHILI, M. . LUOMING, Q. XUESONG, and Z. . JIANTAO. “LEARNING-BASED WEB SERVICE COMPOSITION IN UNCERTAIN ENVIRONMENTS”. Journal of Web Engineering, vol. 13, no. 5-6, Apr. 2014, pp. 450-68, https://journals.riverpublishers.com/index.php/JWE/article/view/3909.