Two Relaxation Methods for Rank Minimization Problems (pdf)

April Sagan , Xin Shen * , John E. Mitchell

Department of Mathematical Sciences, Rensselaer Polytechnic Institute, Troy, NY 12180, USA. E-Mail: sagana@...
* Yelp Inc, San Francisco, CA 91405. E-Mail: shenxinhust@...
Department of Mathematical Sciences, Rensselaer Polytechnic Institute, Troy, NY 12180, USA. Supported in part by the National Science Foundation under Grant Numbers CMMI-1334327 and DMS-1736326 and by the Air Force Office of Scientific Research under Grant Number FA9550-11-1-0260. E-Mail: mitchj@...

Abstract

The problem of minimizing the rank of a symmetric positive semidefinite matrix subject to constraints can be lifted to give an equivalent semidefinite program with complementarity constraints (SDCMPCC). The formulation requires two positive semidefinite matrices to be complementary. This is a continuous and nonconvex reformulation of the rank minimization problem. We develop two relaxations of the problem. We show that constraint qualification holds at any stationary point of either formulation and we explore the structure of the local minimizers.
Keywords: Rank minimization, constraint qualification, semidefinite programs with complementarity constraints

Journal of Optimization Theory and Applications, online first, August 2020.


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