My information

Yukai Yang, Yu-Kai Yang, 杨遇凯, 楊遇凱

All of the four are equivalent and correct!

github.com/yukai-yang

ORCID iD iconorcid.org/0000-0002-2623-8549

Personal Statement

I am working as a Senior Lecturer at Department of Statistics, Uppsala University. I have been doing research and teaching in the field of time series econometrics for quite a few years.


Research Interests

My research is focused on (keywords) smooth transition models, state-space models, macroeconometrics, financial econometrics, high-dimensional analysis, cointegration, long memory, panel data analysis, directional statistics, Bayesian, MCMC and related computational methods.


Education

  • 2012, PhD in Economics, CREATES, Department of Economics and Business, Aarhus University

    • thesis: “Modelling Nonlinear Vector Economic Time Series”

    • supervisors: Prof. Timo Teräsvirta and Prof. Christian Møller Dahl

    • committee: Prof. Dick van Dijk, Prof. Rickard Sandberg and Prof. Henning Bunzel

  • 2008, Cand. Polit., Økonomisk Institut, Københavns Universitet

    • thesis: “Bayesian Analysis of the Cointegrated VAR Model”

    • supervisor: Prof. Søren Johansen

    • committee: Prof. Tom Engsted

  • 2003, Bachelor of Computer Science and Technology, Shanghai Jiao Tong University

Research

Peer-reviewed articles

Ankargren, S., Unosson, M. and Yang, Y.: 2020, “A Flexible Mixed-Frequency Vector Autoregression with a Steady-State Prior”, Journal of Time Series Econometrics 12(2), pp.20180034

Zhao, S., Zhang, L., Huang, S., Shen, Y., Zhao, S., Yang, Y.: 2019, “Evaluation of defogging: A real-world benchmark dataset, a new criterion and baselines”, 2019 IEEE International Conference on Multimedia and Expo (ICME) IEEE, pp.1840-1845

Shao, X., Liu, X., Zhang, L., Zhao, S., Shen, Y., Yang, Y.: 2019, “Revisit surround-view camera system calibration”, 2019 IEEE International Conference on Multimedia and Expo (ICME) IEEE, pp.1486-1491

Zhang, Y., Zhang, L., Liu, X., Zhao, S., Shen, Y., Yang, Y.: 2019, “Pay by showing your palm: A study of palmprint verification on mobile platforms”, 2019 IEEE International Conference on Multimedia and Expo (ICME) IEEE, pp.862-867

Huang, J., Zhang, L., Shen, Y., Zhang, H., Zhao, S., Yang, Y.: 2019, “DMPR-PS: A novel approach for parking-slot detection using directional marking-point regression”, 2019 IEEE International Conference on Multimedia and Expo (ICME) IEEE, pp.212-217

Yang, Y. and Bauwens, L.: 2018, “State-Space Models on the Stiefel Manifold with a New Approach to Nonlinear Filtering”, Econometrics 6(4), 48

Working papers

Ankargren, S. and Yang, Y.: 2019, “Mixed-Frequency Bayesian VAR Models in R: The mfbvar Package”

  • Department of Statistics, Uppsala University, working paper 2019-08-23

  • R code mfbvar

Yang, Y. and Bauwens, L.: 2018, “State-Space Models on the Stiefel Manifold with a New Approach to Nonlinear Filtering”

  • CREATES research paper 2018-30; Department of Statistics, Uppsala University, working paper 2018:5

  • R code DOI

Ankargren, S., Unosson, M. and Yang, Y.: 2018, “A Mixed-Frequency Bayesian Vector Autoregression with a Steady-State Prior”

  • CREATES research paper 2018-32; Department of Statistics, Uppsala University, working paper 2018:3

González, A., Van Dijk, D., Teräsvirta, T. and Yang, Y.: 2017, “Panel Smooth Transition Regression Models”

  • Revised and updated version of the working paper No. 604 (2005) in the Working Paper Series of Economics and Finance, SSE

  • No. 604 in the Working Paper Series of Economics and Finance, SSE 2017

  • R code DOI

Yang, Y.: 2014, “Testing Constancy of the Error Covariance Matrix using a Spectral Decomposition and a Parametric Alternative in Vector Models”

Teräsvirta, T. and Yang, Y.: 2014, “Specification, Estimation and Evaluation of Vector Smooth Transition Autoregressive Models with Applications”

Teräsvirta, T. and Yang, Y.: 2014, “Linearity and Misspecification Tests for Vector Smooth Transition Regression Models”

Theses

Yang, Y.: 2012, “Modelling Nonlinear Vector Economic Time Series”

  • PhD thesis supervised by Timo Teräsvirta and Christian Møller Dahl
  • Committee members: Dick van Dijk and Rickard Sandberg
  • Department of Economics and Business, Business and Social Sciences, Aarhus University, ISBN 978-87-90117-89-4

Yang, Y.: 2008, “Bayesian Analysis of the Cointegrated VAR Model”

  • Master thesis supervised by Søren Johansen
  • Committee member: Tom Engsted
  • Cand.Polit., Department of Economics, University of Copenhagen

Softwares

R-package “PSTR” for modelling panel smooth transition regression (PSTR)

  • for testing, estimating and evaluating the Panel Smooth Transition Regression (PSTR) model.
  • available in CRAN
  • available at GitHub

R-package “SMFilter” implementing the filtering algorithms for the state-space models on the Stiefel manifold

R-package “zoomgrid” implementing the grid search optimization algorithm with a zoom

R-package “R6DS” implementing some useful data stuctures by using the R6 reference class

R-package “mfbvar” implementing the estimation, model evaluation and forecasting of the mixed-frequency Bayesian vector autoregressive (VAR) models with Minnesota or steady-state priors

  • co-authored with Sebastian Ankargren (maintainer)
  • available in CRAN
  • available at GitHub

R-package “LVSTAR” for modelling vector smooth transition autoregression

  • implementing model specification, model estimation and model evaluation tests
  • available very soon

R-package “LTable” providing quick LaTeX code for tables from the results obtained in R environment

OX-package “RF” for estimating semiparametric random field model

R-package “BCATS” for Bayesian cointegration analysis using unit length normalisation

Teaching

  • “Time Series Analysis” (2.5 ECTS, PhD level), Department of Economics, Uppsala University

  • “Master Thesis in Statistics, 2ST116” (30 ECTS, master level), Department of Statistics, Uppsala University

  • “Magister Thesis in Statistics, 2ST117” (15 ECTS, master level), Department of Statistics, Uppsala University

  • “Financial Econometrics, 2ST119” (7.5 ECTS, master and PhD level), Department of Statistics, Uppsala University

  • “Time Series Econometrics, 2ST111” (7.5 ECTS, master level), Department of Statistics, Uppsala University

  • “Advanced Econometrics, 2ST123” (7.5 ECTS, master level), Department of Statistics, Uppsala University

  • “Statistical Programming with R, 2ST105” (7.5 ECTS, master level), Department of Statistics, Uppsala University

  • “Time Series Analysis, 2ST093” (7.5 ECTS, bachelor level), Department of Statistics, Uppsala University

Skills

  • Platforms:

    Mac OS, Linux, and Windows

  • Programming:

    R, Go, C++, Latex, Swift, Python, JavaScript, Matlab, OX, Java, SQL

  • Languages:

    Shanghainese (native), Mandarin (native), English (fluent), Swedish (intermediate), Japanese (intermediate), Danish (intermediate), French (intermediate), German (basic)

Contact

  • Postal address:

    Department of Statistics

    Uppsala University

    P.O. 513, SE - 751 20

    Uppsala, Sweden

  • Email address:

    yukai.yang[at]statistik.uu.se


Updated in Oct. 2022