170 citations · 897 across the 35 of their papers we have counts for
4 papers · 1 filter
The Gaussian approximation for multi-color generalized Friedman's urn model
Li-Xin Zhang, Feifang Hu
The Friedman's urn model is a popular urn model which is widely used in many disciplines. In particular, it is extensively used in treatment allocation schemes in clinical trials.…
A New Family of Covariate-Adjusted Response Adaptive Designs and their Asymptotic Properties
Li-Xin Zhang, Feifang Hu
It is often important to incorporating covariate information in the design of clinical trials. In literature, there are many designs of using stratification and covariate-adaptive…
Multi-color Randomly Reinforced Urn for Adaptive Designs
Li-Xin Zhang, Feifang Hu, Siu Hung Cheung +1
This paper is withdrawn
Immigrated urn models - asymptotic properties and applications
Li-Xin Zhang, Feifang Hu, Siu Hung Cheung +1
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 h…