Facial reduction for symmetry reduced semidefinite and doubly nonnegative programs

Hao Hu, Renata Sotirov, Henry Wolkowicz

Research output: Contribution to journalArticleScientificpeer-review

46 Downloads (Pure)


We consider both facial reduction, FR, and symmetry reduction, SR, techniques for semidefinite programming, SDP. We show that the two together fit surprisingly well in an alternating direction method of multipliers, ADMM, approach. In fact, this approach allows for simply adding on nonnegativity constraints, and solving the doubly nonnegative, DNN, relaxation of many classes of hard combinatorial problems. We also show that the singularity degree remains the same after SR, and that the DNN relaxations considered here have singularity degree one, that is reduced to zero after FR. The combination of FR and SR leads to a significant improvement in both numerical stability and running time for both the ADMM and interior point approaches. We test our method on various DNN relaxations of hard combinatorial problems including quadratic assignment problems with sizes of more than n = 500. This translates to a semidefinite constraint of order 250, 000 and 625 x 10(8) nonnegative constrained variables, before applying the reduction techniques.
Original languageEnglish
Pages (from-to)475-529
JournalMathematical Programming
Issue number1
Publication statusPublished - Jun 2023


  • semidefinite programming
  • group symmetry
  • facial reduction
  • quadratic assignment problem
  • vertex separator problem


Dive into the research topics of 'Facial reduction for symmetry reduced semidefinite and doubly nonnegative programs'. Together they form a unique fingerprint.

Cite this