Piotr Zwiernik

Department of Statistical Sciences
University of Toronto
100 St. George Street
Toronto, ON M5S 3G3 Canada

Department of Economics and Business
Universitat Pompeu Fabra

BSE Data Science Center

E-mail: piotr.zwiernik@utoronto.ca

Gaussian tripod

Research interests: high-dimensional covariance matrix estimation, graphical models, convex optimization, algebraic and combinatorial methods in statistics.

Editorial responsibilities: Biometrika, Scandinavian Journal of Statistics, Algebraic Statistics.


  • I am looking for undergraduate and graduate students interested in mathematical statistics and its aspects related to combinatorics, convex analysis, and tensors. For recent PhD graduates: There are open calls for postdoctoral positions at UofT - see here, here and here (the latter is particularly suitable for underrepresented groups).
  • GOLAZO R package for a general assymetric regularization of the log-likelihood in Gaussian graphical models.
    To install, just call in R: devtools::install_github("pzwiernik/golazo")

Math to the people (four axioms of Federico Ardila):

  • Axiom 1. Mathematical potential is distributed equally among different groups, irrespective of geographic, demographic, and economic boundaries.
  • Axiom 2. Everyone can have joyful, meaningful, and empowering mathematical experiences.
  • Axiom 3. Mathematics is a powerful, malleable tool that can be shaped and used differently by various communities to serve their needs.
  • Axiom 4. Every student deserves to be treated with dignity and respect.