Welcome ! My name is Ruiqi Liu (刘瑞琪).

I am an Assistant Professor in the Department of Mathematics and Statistics at Texas Tech University.

My research focuses on developing statistical procedures to solve real-world problems and understanding the foundations of statistics.

A detailed CV can be found HERE.

Contact Information
Office: MA 235, Department of Mathematics & Statistics
Address: Texas Tech University, 1108 Memorial Circle, Lubbock, TX, 79409
Phone: (806) 834-8498
Email: ruiqliu (at) ttu (dot) edu


  • Identification and Estimation in Panel Models with Overspecified Number of Groups
    Ruiqi Liu, Zuofeng Shang, Qiankun Zhou and Yonghui Zhang
    Journal of Econometrics
    , 215(2): 574-590, 2020 Published & Preprint
  • Statistical Inference on Panel Data Models: A Kernel Ridge Regression Method
    Shunan Zhao, Ruiqi Liu and Zuofeng Shang
    Journal of Business & Economic Statistics
    , 39(1): 325-337, 2020 Published & Preprint
  • Optimal Nonparametric Inference via Deep Neural Network
    Ruiqi Liu, Ben Boukai and Zuofeng Shang
    Journal of Mathematical Analysis and Applications
    , 505: 125561, 2021 Published & Preprint
  • Testing Community Structure for Hypergraphs
    Mingao Yuan, Ruiqi Liu, Yang Feng and Zuofeng Shang
    Annals of Statistics
    , 50(1): 147-169, 2022 Published & Preprint
  • Online Statistical Inference for Parameters Estimation with Linear-Equality Constraints
    Ruiqi Liu, Mingao Yuan and Zuofeng Shang
    Journal of Multivariate Analysis
    , 191: 105017, 2022 Published & Preprint
  • A Consistent Test of Independence and Goodness-of-fit in Linear Regression Models
    Qiqing Yu and Ruiqi Liu
    Communications in Statistics - Simulation and Computation
    , 51(7): 3955-3974, 2022 Published

You can find my recent preprints HERE.

Previous Semeters

  • STAT 5378 -- Stochastic Processes
  • STAT 5376 -- Statistical Machine Leraning
  • STAT 5328 -- Intermediate Mathematical Statistics I

Spring 2022

  • STAT 5329 -- Intermediate Mathematical Statistics II

Academic Experience