About Me

I am an Assistant Professor at Department of Statistics at University of Chicago. I received my PhD from Princeton University in 2014, under the supervision of Jianqing Fan and Jiashun Jin.

Research Interests

High-dimensional Data Analysis, Sparse Inference, Genetics and Genomics, fMRI, Large-scale Social Networks and Graphical Models, Random Matrix Theory, Financial Econometrics

Manuscripts
  • Jin, J. and Ke, Z. (2017).
    A Sharp Lower Bound for Mixed-Membership Estimation. (arXiv, pdf)
  • Jin, J., Ke, Z. and Luo, S. (2017).
    Estimating Network Memberships by Simplex Vertex Hunting. (arXiv, pdf)
  • Ke, Z., Xue, L. and Yang, F. (2017).
    Diagonally Dominant Principal Component Analysis. (pdf)
  • Ke, Z. and Yang, F. (2017).
    Covariate Assisted Variable Ranking. (arXiv, pdf)
  • Peng, R., Lee, H., Ke, Z., and Saunders, M. (2017).
    Racial Disparities in Deceased Donor Kidney Transplantation Waitlist Appearance in Chicago. (pdf)
  • Ke, Z. and Wang, M. (2017).
    A New SVD Approach to Optimal Topic Estimation. (arXiv, pdf)
  • Ke, Z. (2016).
    Detecting Rare and Weak Spikes in Large Covariance Matrices. (arXiv, pdf)
  • Ke, Z. (2016).
    A Geometrical Approach to Topic Model Estimation. (arXiv, pdf)

Publications
  • Jin, J., Ke, Z. and Wang, W. (2016).
    Phase Transitions for High-dimensional Clustering and Related Problems. (arXiv, pdf)
    Annals of Statistics, to appear.
  • Ji, P., Jin, J. and Ke, Z. (2016).
    Discussion on "Statistical Modeling of Citation Exchange between Statistics Journals". (website, pdf)
    Journal of the Royal Statistical Society: Series A, 179(1): 52-52.
  • Jin, J. and Ke, Z. (2016).
    Rare and Weak Effects in Large-scale Inference: Methods and Phase Diagrams. (website, pdf)
    Invited review, Statistica Sinica, 26(1), 1-34.
  • Fan, J., Ke, Z., Liu, H. and Xia, L. (2015).
    QUADRO: A Supervised Dimension Reduction Method via Rayleigh Quotient Optimization. (website, pdf, supplement)
    Annals of Statistics, 43(4), 1493-1534.
  • Ke, Z., Fan, J. and Wu, Y. (2015).
    Homogeneity Pursuit. (website, pdf, supplement)
    Journal of the American Statistical Association, 110(509):175-194.
  • Fan, J. and Ke, Z. (2014).
    Discussion: "A Significance Test for the Lasso". (website, pdf)
    Annals of Statistics, 42(2): 483-492.
  • Jin, J. and Ke, Z. (2014).
    Discussion on "Multiscale Change Point Inference". (website, pdf)
    Journal of the Royal Statistical Society: Series B, 76(3): 555-557.
  • Ke, Z., Jin, J. and Fan, J. (2014).
    Covariate Assisted Screening and Estimation. (website, pdf, supplement)
    Annals of Statistics, 42(6): 2202-2242.