318 Hanes Hall, CB #3260 Chapel Hill, NC 27599-3260
Loading Events

« All Events

  • This event has passed.

STOR Colloquium: Yuan Liao, Rutgers University

March 20, 2019 @ 3:30 pm - 4:30 pm

Yuan Liao

Rutgers University



Factor-Driven Two-Regime Regression using

Mixed Integer Programming


We propose a two-regime regression model where the switching between the regimes is driven by a vector of possibly unobservable factors. When the factors are latent, we estimate them by the principal component analysis of a much larger data set. We show that the optimization problem can be reformulated as mixed integer optimization and present two alternative computational algorithms: (1) MI quadratic programming and (2) MI linear programming.  We show that (1) is numerically equivalent to the original least squares problem, but runs slowly. On the other hand, (2) runs much faster, and produces asymptotically equivalent estimators.  We derive the asymptotic distributions of the resulting estimators, and establish a phase transition that describes the effect of first stage factor estimation.


The paper can be downloaded from https://arxiv.org/abs/1810.11109


March 20, 2019
3:30 pm - 4:30 pm
Event Category:


120 Hanes Hall
Hanes Hall
Chapel Hill, NC 27599 United States