A Short discussion for Empirical Likelihood and Bootstrap:  中文
Some notes on Logrank Test:  中文
A Proof that Kaplan-Meier/Nelson-Aalen estimator reached the information lower bound: English
A note on a so-called novel estimate of pAUC:  English


   In memory of Professor T.L. Lai.  A picture taken in 1980 at Zhejiang Univ. Lai and his wife is in the middle, me on the far right.
 Lai Pic

   Some Pictures of John R. Van Ryzin (1935-1987). He was my Ph. D. thesis adviser.
     (click to see larger image) Mai Zhou, John Van Ryzin and Lupe Gomez, 1986 at Columbia University. Ph. D. greaduation.

    (click to see larger image) Van Ryzin and Mai Zhou 5/1986 at Columbia

      (click to see larger image) John Van Ryzin and Mai Zhou 1983. New York.

        From Newsweek Magazine  Aug. 10, 1987.






   Some old Probability/Statistics Qualify Exams from Univ. of Kentucky and Columbia University

  Old Thesis of Li Lee at Columbia University (1990)......look inside the research link