Hon Keung Tony Ng
Associate Professor 

Department of Statistical Science 

 

Contact  
Department of Statistical Science
Southern Methodist University                        
3225 Daniel Avenue                                       
P O Box 750332                                         
Dallas, Texas 75275-0332
Phone:    214-768-2465
Fax:        214-768-4035
email:      ngh@mail.smu.edu
Education
B.Sc.(Hon.), Statistics, The Chinese Univ of Hong Kong, 1997
M.Phil., Statistics, The Chinese Univ of Hong Kong, 1999
M.Sc., Statistics, McMaster University, Canada, 2000
Ph.D., Statistics, McMaster University, Canada, 2002

 

 
Research Interests (Current Research Activities)
  • Reliability theory
  • Life-testing procedures
  • Statistical inference
  • Censored data analysis
  • Nonparametric procedures
  • Statistical Methods in Epidemiology
 Teaching

STAT 2331 Introduction to Statistical Methods

STAT 6304 Computational Statistics

STAT 6350 Analysis of Lifetime Data

STAT 6395 Special Topics in Statistics: Epidemiology

Professional Memberships

American Statistical Association (ASA): Member
Institute for Operations Research and the Management Sciences (INFORMS): Member
Institute of Electrical and Electronics Engineers (IEEE): Elected Senior Member
International Chinese Statistical Association (ICSA): Life Member  
International Indian Statistical Association (IISA): Life Member  
International Statistical Institute (ISI): Elected Member
  
Professional Services

Associate Editor, Communications in Statistics (2009- )

Book authored

Precedence-Type Tests and Applications (coauthored with N. Balakrishnan), John Wiley & Sons, Hoboken, New Jersey, 2006 (324 pages).

Selected Publications

To appear

Ka, C. Y., Chan,  P. S., Ng, H. K. T. and Balakrishnan, N.. Optimal Sample Size Allocation for Multi-level Stress Testing with Extreme Value Regression under Type-II Censoring, to appear in Statistics.

Ng, H. K. T. and Balakrishnan, N.. Precedence-Type Test Based on Kaplan-Meier Estimator of Cumulative Distribution Function, to appear in Journal of Statistical Planning and Inference.

2010

Balakrishnan, N., Tripathi, R. C., Kannan, N. and Ng, H. K. T. (2010).  Some nonparametric precedence-type tests based on progressively censored samples and evaluation of power, Journal of Statistical Planning and Inference, 140, 559-573.

2009

Balakrishnan, N. and Ng, H. K. T. (2009). Precedence-Type Tests for the Comparison of Treatments with a Control, in Scan Statistics: Methods and Applications (J. Glaz, V. Pozdnyakov and S. Wallenstein, eds), pp. 27-54, Birkhäuser, Boston.

Chan, P. S. and Ng, H. K. T. (2009). On Robustness of Optimal Adaptive Design for Censored Exponential Response Trials, International Journal of Intelligent Technologies and Applied Statistics, 2, 153-172.

Lin, C. T., Ng, H. K. T. and Chan, P. S. (2009). Statistical Inference of Type-II Progressively Hybrid Censored Data with Weibull Lifetimes, Communications in Statistics – Theory and Methods, 38, 1710-1729.

Ng, H. K. T., Kundu, D. and Chan, P. S. (2009). Statistical Analysis of Exponential Lifetimes Under an Adaptive Type-II Progressive Censoring Scheme, Naval Research Logistics, 56, 687-698.

Ng, H. K. T. and Wang, Z. (2009). Statistical Estimation for the Parameters of Weibull Distribution based on progressively Type-I interval censored sample, Journal of Statistical Computation and Simulation, 79, 145-159.

Tian, M., Tang, M. L.,  Ng, H. K. T.  and Chan, P. S. (2009). A comparative study of confidence intervals for negative binomial proportion, Journal of Statistical Computation and Simulation, 79, 241-249.

Wang, Z. and Ng, H. K. T. (2009). Design and Analysis of Analgesic Trials with Paired Time-to-Event Endpoints, in Design, Summarization, Analysis & Interpretation of Clinical Trials with Time-to-Event Endpoints  (K. E. Peace, eds.), pp. 269-291, Taylor & Francis.

2008

Balakrishnan, N. and Ng, H. K. T. (2008). Precedence Tests, In Encyclopedia of Statistics in Quality and Reliability (Eds., F. Ruggeri, R. Kenett and F. Faltin), Chichester, UK: John Wiley & Sons.

Chan, P. S., Ng, H. K. T., Balakrishnan, N. (2008). Statistical Inference for Start-up Demonstration Tests with Rejection of Units upon Observing d Failures, Journal of Applied Statistics, 35, 867-878.

Chan, P. S., Ng, H. K. T., Balakrishnan, N. and Zhou, Q. (2008). Point and interval estimation for extreme-value regression model under Type-II censoring, Computational Statistics and Data Analysis, 52, 4040-4058.

Gu, K., Ng, H. K. T., Tang, M. L. and Schucany, W. R. (2008). Testing the Ratio of Two Poisson Rates, Biometrical Journal, 50, 283-298.

Liao, Y. J., Tang, M. L. Ng, H. K. T. (2008). On tests of risk ratio under standard inverse sampling, Computer Methods and Programs in Biomedicine, 89, 261-268.

Ng, H. K. T., Filardo, G. and Zheng, G. (2008). Confidence Interval Estimating Procedures for Standardized Incidence Rates, Computational Statistics and Data Analysis, 52, 3501-3516.

Tian, M., Tang, M. L.,  Ng, H. K. T.  and Chan, P. S. (2008). Confidence Interval Estimators for Risk Ratio under Inverse Sampling, Statistics in Medicine, 27, 3301-3324.

Zheng, G. and Ng, H. K. T. (2008). Genetic model selection in two-phase analysis for case-control association studies, Biostatistics, 9, 391-399

2007

Balakrishnan, N., Kundu, D., Ng, H. K. T. and Kannan, N. (2007). Point and Interval Estimation for a Simple Step-Stress Model with Type-II Censoring, Journal of Quality Technology, 39, 35-47.

Filardo, G., Hamilton, C., Hamman, B., Ng, H. K. T. and Grayburn. P. (2007). Categorizing BMI may lead to biased results in studies investigating in-hospital mortality after isolated CABG, Journal of Clinical Epidemiology, 60, 1132 – 1139.

Ng, H. K. T., Balakrishnan. N. and Chan, P. S. (2007). Optimal Sample Size Allocation in Extreme Value Regression, Naval Research Logistics, 54, 237-249.

Ng, H. K. T., Balakrishnan. N. and Panchapakesan, S. (2007). Selecting the Best Population Using a Test for Equality Based on Minimal Wilcoxon Rank-sum Precedence Statistic, Methodology and Computing in Applied Probability, 9, 263-305.

Ng, H. K. T., Gu, K. and Tang, M. L. (2007). A Comparative Study of Tests for the Difference of Two Poisson Means, Computational Statistics and Data Analysis, 51, 3085-3099.

Ng, H. K. T., Mohanty, S. G. and Balakrishnan, N. (2007). An Assessment of Up-and-down Designs and Associated Estimators in Phase I trials, Advances in Statistical Methods for the Health Sciences (N. Balakrishnan, J. L. Auget, M. Mesbah and G. Molenberghs, eds), pp. 361-386, Birkhäuser, Boston.

Ng, H. K. T. and Panchapakesan, S. (2007). Is the Selected Multinomial Cell the Best? Sequential Analysis, 26, 415 – 423.

Tang, M. L., Liao, Y. J., Ng, H. K. T. and Chan, P. S. (2007). Testing the Non-Unity of Rate Ratio under Inverse Sampling, Biometrical Journal, 49, 551-564.

2006

Balakrishnan, N., Ng, H. K. T. and Panchapakesan, S. (2006). A Nonparametric Procedure Based on Early Failures for Selecting the Best Population Using a Test for Equality, Journal of Statistical Planning and Inference, 136, 2087-2111.

Choudhary, P. K. and Ng, H. K. T. (2006). Assessment of Agreement Under Non-standard Conditions Using Regression Models for Mean and Variance, Biometrics, 62, 288-296.

Khoshnood, K., Wilson, K. S., Filardo, G., Liu, Z., Ng, H. K. T. and Wu, Z. (2006). Assessing the efficacy of a voluntary HIV counseling and testing intervention for pregnant women and male partners in Urumqi city, China, AIDS and Behavior, 10, 671-681.

Ng, H. K. T. and Balakrishnan, N. (2006). Precedence Testing, In Encyclopedia of Statistical Sciences 9, second edition (Eds., S. Kotz, N. Balakrishnan, C. B. Read, and B. Vidakovic), pp. 6317-6323, Hoboken, NJ: John Wiley & Sons.

Ng, H. K. T., Kundu, D. and Balakrishnan, N. (2006). Point and Interval Estimation for the Two-parameter Birnbaum-Saunders Distribution Based on Type-II Censored Samples, Computational Statistics and Data Analysis, 50, 3222-3242.

Schucany, W. R. and Ng, H. K. T. (2006). Preliminary Goodness-of-fit Tests for Normality Do Not Validate the One-sample Student t, Communications in Statistics – Theory and Methods, 35, 2275-2286.

Tang, M. L., Ng, H. K. T., Guo, J., Chan, W. and Chan, P. S. (2006). Exact Cochran-Armitage Trend Tests: Comparison Under Different Models, Journal of Statistical Computation and Simulation, 76, 847-859 .

Wang, Z. and Ng, H. K. T. (2006). A Comparative Study of Tests for Paired Lifetime Data, Lifetime Data Analysis, 12, 505-522.

2005

Ng, H. K. T. (2005). Parameter Estimation for a Modified Weibull Distribution for Progressively Type-II Censored Samples, IEEE Transactions on Reliability, 54, 374-380.

Ng, H. K. T.  and Balakrishnan, N. (2005). Weighted Precedence and Maximal Precedence Tests and an Extension to Progressive Censoring, Journal of Statistical Planning and Inference, 135, 197-221.  

Ng, H. K. T. and Tang, M. L. (2005). Testing the equality of two Poisson means using the rate ratio, Statistics in Medicine, 24, 955 - 965.

2004

Balakrishnan, N., Ng, H. K. T. and Kannan, N. (2004). Goodness-of-Fit Tests Based on Spacings for Progressively Type-II Censored Data from a General Location-Scale Distribution, IEEE Transactions on Reliability, 53, 349-356.

Ng, H. K. T.  and Balakrishnan, N. (2004). Wilcoxon-type Rank-sum Precedence Tests, Australia and New Zealand Journal of Statistics, 46, 631 - 648.  

Ng, H. K. T., Chan, P. S. and Balakrishnan, N. (2004). Optimal Progressive Censoring Plan for The Weibull Distribution, Technometrics, 46, 470 - 481.

Tang, M. L. and Ng, H. K. T. (2004). Letter to the Editor, comments on “Confidence limits for the ratio of two rates based on likelihood scores: non-iterative method” by Graham, P. L., Mengersen, K. and Morton, A. P., Statistics in Medicine, 2003; 22: 2071-2083, Statistics in Medicine, 23, 685-693.  

2003

Balakrishnan, N., Kannan, N., Lin, C. T. and Ng, H. K. T. (2003). Point and interval Estimation for Gaussian Distribution, Based on Progressively Type-II Censored Samples, IEEE Transactions on Reliability, 52, 90-95.

Ng, H. K. T., Kundu, D. and Balakrishnan, N. (2003). Modified moment estimation for two-parameter Birnbaum-Saunders distribution, Computational Statistics and Data Analysis, 43, 283-298.

2002

Balakrishnan, N., Ng, H. K. T. and Kannan, N. (2002). A Test of Exponentiality Based on Spacings for Progressively Type-II Censored Data, in Goodness-of-Fit Tests and Model Validity (C. Huber-Carol et al., eds.), pp. 89-110. Birkhäuser, Boston.

Ng, H. K. T. and Balakrishnan, N. (2002). Wilcoxon-type Rank-sum Precedence Tests: Large-sample approximation and evaluation, Applied Stochastic Models in Business and Industry, 18, 271-286.

Ng, H. K. T., Chan, P. S. and Balakrishnan, N. (2002). Estimation of Parameters From Progressively Censored Data Using EM Algorithm, Computational Statistics and Data Analysis, 39, 371-386.

2001

Balakrishnan, N. and Ng, H. K. T. (2001). Improved Estimation of the Correlation Coefficient in a Bivariate Exponential Distribution, Journal of Statistical Computation and Simulation, 68, 173-184.

Balakrishnan, N. and Ng, H. K. T. (2001).  On Estimation of the Correlation Coefficient in Moran-Downton Multivariate Exponential Distribution, Journal of Statistical Computation and Simulation, 71, 41-58.

Balakrishnan, N. and Ng. H. K. T. (2001). A General Maximal Precedence Test, in System and Bayesian Reliability (Y. Hayakawa, T. Irony and M. Xie, eds.), pp. 105-122.  Singapore: World Scientific Publishing Co. Pte. Ltd.

Lam, Y. and Ng, H. K. T. (2001). A General Model for Consecutive-k-out-n: F repairable system with exponential distribution and (k-1)-step Markov dependence, European Journal of Operational Research, 129, 663-682.

Last update: 1/18/2010