Publications in Statistics
(email the author for pdf file of the paper)

• Z. Zhu and M. L. Stein (2002) ``Parameter Estimation for Fractional Brownian Surfaces.''  Statistica Sinica, 12, 863-883. 

• Z. Zhu and M. L. Stein (2005) ``Spatial Sampling Design for Parameter Estimation of the Covariance Function.''  Journal of Statistical Planning and Inference. 134(2), 583-603.

• Z. Zhu and M. S. Taqqu (2005) ``Impact of the Sampling Rate on the Estimation of the Parameters of Fractional Brownian Motion.'' Journal of Time Series Analysis. 27 (3): 367-380

• Z. Zhu and M. L. Stein (2006) ``Two-step Spatial Sampling Design for Prediction with Estimated Parameters.'' Journal of Agricultural, Biological and Environmental Statistics. 11(1), 24-44

• Z. Zhu and H. Zhang (2006) ``Spatial Sampling Design under In-fill Asymptotic Framework.''  Environmetrics. 17: 323-337

• D. Agarwal, A. McGregor, J. M. Phillips, S. Venkatasubramanian, and Z. Zhu (2006) ``Spatial Scan Statistics: Approximations and Performance Study.'' Proceedings of the Twelfth ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, 24-33.

• H. Shen, Z. Zhu and T. Lee (2007) ``Robust Estimation of Self-similarity Parameter in Network Traffic Using Wavelet Transform.'' Signal Processing. 87: 2111-2124

• H. K. Im, M. L. Stein, and Z. Zhu (2007) ``Semiparametric Estimation of Spectral Density with Irregular Observations'' Journal of The American Statistical Association. 102 (478): 726-735

• L. Zhang, J. S. Marron, H. Shen and Z. Zhu, (2007), "Singular Value Decomposition and its Visualization."   Journal of Computational and Graphical Statistics, Vol. 16, No. 4, 833-854.

• J. Loh and Z. Zhu (2007), "Accounting for Spatial Correlation in the Scan Statistic." Annals of applied statistics. Vol. 1, No. 2, 560-584.

• H. Shen and Z. Zhu (2008) ``Efficient Mean Estimation in Lognormal Linear Models.''  Journal of Statistical Planning and Inference. Vol 138, No. 3, 552-567.

• T. Lee and Z. Zhu (2009). ``Nonparametric Spectral Density Estimation with Missing Observations." Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing.

• Z. Zhu and Y. Liu (2009) ``Estimating spatial covariance using penalized likelihood with weighted L_1 penalty.'' Journal of Nonparametric Statistics, Vol. 21, No. 7, 925–942..

• Z. Zhu and Y. Wu (2010) ``An efficient algorithm for Estimation and prediction of a class of convolution-based spatial nonstationary models.''  Journal of Computational and Graphical Statistics, Vol 19, No. 1, 74-95.

• C. Park, F. Hernandez-Campos, L. Le, J. S. Marron, J.Park, V. Pipiras, F. D. Smith, R. L. Smith, M. Trvero, and Z. Zhu, ``Long Range Dependence Analysis of Internet Traffic."  Journal of Applied Statistics, Accepted for publication.

                   
Submitted for publication/Technical reports

• E. Evangelou, Z. Zhu, and R. L. Smith.  ``Asymptotic inference for Spatial GLMM using high order Laplace approximation." Submitted for publication.

• X. He, Z. Zhu and R. L. Smith, "Asymptotic Comparison of Predictive Densities for Dependent Observations." Submitted for publication.

• L. Zhang, Z. Zhu and J. S. Marron, "MultiResolution Anomaly Detection method for long range dependent  time series.''  Submitted for publication.

• R. Smith and Z. Zhu ``Asymptotic Theory for Kriging with Estimated Parameters and its Application to Network Design.''  Preliminary version, UNC Department of Statistics Technical report.

• J. Cao, S. Wiel, B. Yu, and Z. Zhu (2000) ``A Scalable Method for Estimating Network Traffic Matrices from Link Counts.'' Bell Labs Technical Report.

• M.L. Stein and Z. Zhu (1999)``Designs for Estimating the Fractal Dimension of Gaussian Processes.'' Technical Report 486, Department of Statistics, the University of Chicago.

Scientific publications

• L. Zhang, Z. Zhu, K. Jeffay, J. S. Marron and F. D. Smith, (2008), "MultiResolution Anomaly Detection for the Internet", Proceedings of the 1st IEEE Workshop on Automated Network Management.

• A. F. Hanna, J. Pinto, Q. Meng, A. Xiu, P. Robinson, K. Yeatts, and Z. Zhu (2008), "Analysis of weather patterns associated with air quality degradation and potential health impacts." Proceedings of the 20th conference on climate variability and change, AMS 88th annual meeting.

• A.F. Hanna, A. Xiu, K. Yeatts, P. Robinson, Z. Zhu, and J. Pinto (2007) ``Exploratory analysis of the potential health impacts of climatic variability and air pollution.''  Proceedings of the 16th Conference on Applied Climatology at the 87th AMS Annual Meeting at San Antonio, TX.
  
  
• Z. Zhu (2006), "Comments on 'Statistics of Optical Colors of KBOs and Centaurs'."
  Statistical Challenges in Modern Astronomy IV, 2006, G. J. Babu and  E. D. Feigelson (eds.), San Francisco: Astron. Soc. Pacific.
  
  
• Z. Zhu and L. Williams (2006), ``Reconstruction of the galaxy cluster mass distribution.'' Statistical Challenges in Modern Astronomy IV, 2006, G. J. Babu and  E. D. Feigelson (eds.), San Francisco: Astron. Soc. Pacific.

• J. Terrell, L. Zhang, K. Jeffay, Z. Zhu, H. Shen, A. Nobel, F. D. Smith (2005), "Multivariate SVD Analyses for Network Anomaly Detection."  ACM SIGCOMM Refereed Poster Proceedings, Philadelphia, US, August 22-26, 2005.