Pre-prints, re-prints and updates. (incomplete list)
Pan and Zhou (1998)
Using 1-parameter sub-family of distributions
in empirical likelihood ratio with censored data
Updated 1/2001
Pan and Zhou (1998) Empirical
likelihood ratios in terms of cumulative hazard.
Zhou and Chen (1999) Testing and
confidece intervals with doubly censored dada.
Zhou (1999) Blinded Power estimation for the Kaplan-Meier/Nelson-Aalen.
Zhou (1999) Nonparametric Bayes estimator of Survival functions with
interval/doubly censored data.
Zhou (2000)
Empirical Envelope MLE and likelihood ratio test.
Zhou (2000)
Nonparametric Bayes estimator of survival functions
for doubly/interval censored data. Updated 2002.
Zhou (2000)
Understanding the Cox regression model with time-change covariates.
An updated version (include frailty models). (9/2001)
Chen and Zhou (2001)
Computing Censored Empirical likelihood by Quadratic Programing.
Zhou and Cui (2000) New Mathematical model for comparative judgment
Power
point file.
Presented at NIP 16.
Zhou, M. (2002)
Empirical
likelihood ratio for arbitrarily censored/truncated data by EM
algorithm.
Kim, K. and Zhou, M. (2003).
Symmetric location estimation/testing by empirical likelihood
Zhou, M. and Li, G. (2004).
Empirical likelihood analysis of the Buckley-James estimator
Zhou, M. (2004).
Empirical likelihood analysis of the rank estimator for the censored
AFT model.
Su, Y. and Zhou, M. (2004).
On a
connection between the Bradley-Terry model
and the Cox proportional hazards model.
Zhou, M. and Luan, J. (2005)
Nonparametric
Bayes Estimator of Survival Function for
Right-Censoring and Left-Truncation Data
Bathke, A., Kim, M. and Zhou, M. (2005)
Combine
multiple tests by empirical likelihood with censored data
Zhou, M. (2005)
The Cox
proportional hazards model with a partially known baseline
Zhou, M. Bathke, A., Kim, M. (2007)
Empirical likelihood for Heteroscedastic AFT model.
Zhou, M. and Fang, H. (2006) A Comparison of Poisson and Bionomial
Empirical Likelihood.
Zhou, M. (2007) Empirical Likelihood for Counting Processes.
Zhou, M. and Jeong J. (2008) Empirical Likelihood Ratio Test for Mean and Median Residual Lifetime (with censored data)
Empirical Likelihood for the Mean from right
censored data.
Some R packages related to the research work:
(first two also available at CRAN)
emplik Empirical likelihood ratio, can handle censored/truncated
data. (it should be also on CRAN). A plot of
2-dim confidence region.
dblcens
Compute NPMLE of CDF from doubly censored data.
NPBayes
Nonparametric Bayes estimator of CDF from arbitrary censored data.
rankreg: A package for rank estimators with censored AFT model.
CoxEL: A package to compute empirical likelihood test when side info
on baseline hazard is available for a Cox model.
emplik2: A package wrote and maintained by my Ph.D. student for two sample censored data empirical likelihood ratio.
Ph.D. students I directed (with year graduated):
Ding, Li (1994); Zhang, Yuan (1995); Pan, XiaoRong (1997); Fang, Hui
(2000); Chen, Kun (2001);
Kim, Kyoungmi (2003);
Su, Yuhua (2003); Luan, Julia (2004);
Chen, Min (2005);
Zhu, Hua (2007); Huang, Liping (2009 expecting) plus 2 more current Ph.D. students.
I am currently interested in these research problems:
Empirical likelihood ratio method for censored data,
including AFT models.
High dimensional regression problems (large p, small n). LASSO and similar technique applied to AFT models.
Buckley-James estimator; Cox models and quantile regressions.
Empirical likelihood analysis of some non-standard problems ---
where NPMLE do not exist. (envelope empirical likelihood ratio).
Computational method for the Empirical Likelihood Ratio.
Regression models for ranking data --- improving the Bradley-Terry
model
(K ranking at a time). Scaling.
Better Monte Carlo method in the computation of
the trace of VERY LARGE matrix.
Statistical analysis for doubly censored data --- computation of
the distribution estimator, testing and confidence intervals.
I have also worked on the problems related to the Kaplan-Meier
estimator, the Cox proportional hazards regression model, and the
Nelson-Aalen estimator.
Nonparametric Bayes estimator of survival curve with arbitrary
censored data.
Slides of Recent talks:
Log-rank test, improved.
PDF
file.
Empirical Likelihood and AFT models
PDF
file.
Computation of censored/truncated empirical likelihood ratio by EM
PDF file.
What is a Cox model?
Power
point file.
Improving Cox model.
PDF
file.
Power point file on the intro to empirical likelihood
Power point
file.
PDF file of 2 examples (simulations): double censored data and modified
Cox model estimators:
PDF file.