作者：Zhang, Li-Xin; Hu, Feifang; Cheung, Su Hung; Chan, Wai Sum
作者单位：Zhejiang University; Chinese University of Hong Kong; Chinese University of Hong Kong
摘要：Urn models have been widely studied and applied in both scientific and social science disciplines. In clinical studies, the adoption of urn models in treatment allocation schemes has proved to be beneficial to researchers, by providing more efficient clinical trials, and to patients, by increasing the likelihood of receiving the better treatment. In this paper, we propose a new and general class of immigrated urn (IMU) models that incorporates the immigration mechanism into the urn process. Th...
