Publications of Yichao Wu

Supported in part by NSF grants DMS-0905561 and DMS-1055210, NIH/NCI grant R01-CA149569, and NCSU internal grants.

Statistical Methodology Papers

• Wang, Lan, Wu, Yichao and Li, Runze. Quantile Regression for Analyzing Heterogeneity in Ultra-high Dimension. Journal of the American Statistical Association, to appear.
• Wu, Tongtong, and Wu, Yichao. Nonlinear Vertex Discriminant Analysis with Reproducing Kernels. Statistical Analysis and Data Mining, to appear.
• Wu, Yichao and Liu, Yufeng. Adaptively Weighted Large Margin Classifiers. Journal of Computational and Graphical Statistics, to appear.
• Wu, Yichao and Liu, Yufeng. Functional robust support vector machines for sparse and irregular longitudinal data. Journal of Computational and Graphical Statistics, to appear.
• Wu, Yichao (2012). Elastic net for Cox’s proportional hazards model with a solution path algorithm . Statistica Sinica, 22, 271-294.
• Liu, Yufeng, Zhang, Hao Helen, and Wu, Yichao (2011). Soft or hard classification? Large margin unified machines. Journal of the American Statistical Association, 106, 166-177.
• Liu, Yufeng and Wu, Yichao (2011). Simultaneous multiple non-crossing quantile regression estimation using kernel constraints . Journal of Nonparametric Statistics, 23, 415-437.
• Wu, Yichao and Li, Lexin (2011). Asymptotic Properties of Sufficient Dimension Reduction with A Diverging Number of Predictors. Statistica Sinica, 21, 707-730.
• Wu, Yichao (2011). An ordinary differential equation-based solution path algorithm . Journal of Nonparametric Statistics, 23, 185-199.
• Wu, Yichao and Liu, Yufeng (2011). Non-crossing large-margin probability estimation and its application to robust SVM via preconditioning. Statistical Methodology, 8, 56-67.
• Liu, Yufeng, Wu, Yichao, and He, Qinying (2010). Utility-based weighted multicategory robust support vector machines . Statistics and Its Interface, 3, 465-476.
• Wu, Yichao, Fan, Jianqing, and Müller, Hans-Georg (2010). Varying-coefficient functional linear regression. Bernoulli, 16, 730-758. Detailed Auxiliary Result and Proofs
• Wu, Yichao, Zhang, Hao Helen, and Liu, Yufeng (2010). Robust Model-free Multiclass Probability Estimation. Journal of the American Statistical Association, 105, 424-436.
• Zhu, Zhengyuan and Wu, Yichao (2010). Estimation and prediction of a class of convolution-based spatial nonstationary models for large spatial data. Journal of Computational and Graphical Statistics, 19, 74-95.
• Fan, Jianqing, Richard Samworth, and Wu, Yichao (2009). Ultrahigh dimensional feature selection: beyond the linear model. Journal of Machine Learning Research, 10, 1829-1853.
• Wu, Yichao and Liu, Yufeng (2009). Stepwise Multiple Quantile Regression Estimation using Non-crossing Constraints. Statistics and Its Interface, 2, 299-310.
• Fan, Jianqing, Wu, Yichao, and Feng, Yang (2009). Local quasi-likelihood with a parametric guide. Annals of Statistics, 37, 4153-4183.
• Fan, Jianqing, Feng, Yang, and Wu, Yichao (2009). Network exploration via the adaptive LASSO and SCAD penalties. Annals of Applied Statistics, 3, 2, 521-541.
• Wu, Yichao and Liu, Yufeng (2009). Variable selection in quantile regression. Statistica Sinica, 19, 801-817.
• Fan, Jianqing and Wu, Yichao (2008). Semiparametric estimation of covariance matrices for longitudinal data. Journal of the American Statistical Association, 103, 484, 1520-1533.
• Zhang, Hao Helen, Liu, Yufeng, Wu, Yichao, and Zhu, Ji (2008). Variable selection for the multicategory SVM via sup-norm regularization. Electronic Journal of Statistics, 2, 149-167.
• Wu, Yichao and Liu, Yufeng (2007). Robust truncated-hinge-loss support vector machines. Journal of the American Statistical Association, 102, 479, 974-983.
• Liu, Yufeng and Wu, Yichao (2007). Variable selection via a combination of the L0 and L1 penalties. Journal of Computational and Graphical Statistics, 16, 4, 782-798.
• Liu, Yufeng and Wu, Yichao (2006). Optimizing psi-learning via mixed integer programming. Statistica Sinica, 16, 2, 441-457.

Collaborative Work

• MAQC Consortium (2010). The MicroArray Quality Control (MAQC)-II study of common practices for the development and validation of microarray-based predictive models. Nature Biotechnology, 28, 8, 827-841.
• Ribeiro, Carla, Hurd, Harry, Wu, Yichao, Braun, Mary, Jones, Lisa, Brighton, Brian, Boucher, Richard and O'Neal, Wanda (2009). Azithromycin Alters the Gene Expression and Inflammatory Responses of Human Airway Epithelia. PLoS ONE, 4(6).

Conference proceedings

• Wu, Yichao and Liu, Yufeng (2007). On Multicategory Truncated-Hinge-Loss Support Vector Machines. Contemporary Mathematics, 443, 49-58.

Book chapters

• Fan, Jianqing, Fan, Yingying, and Wu, Yichao (2010). High dimensional classification. High-dimensional Data Analysis (T. T. Cai and X. Shen, eds), 3-37, World Scientific, New Jersey.
• Liu, Yufeng and Wu, Yichao (2010). Flexible Large Margin Classifiers. High-dimensional Data Analysis (T. T. Cai and X. Shen, eds), 39-71, World Scientific, New Jersey.
• Fan, Jianqing, Feng, Yang, and Wu, Yichao (2010). Ultrahigh dimensional variable selection for Cox's proportional hazards model, IMS Collection, 6, 70-86.