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On convergence of a q-random coordinate constrained algorithm for non-convex problems

Author

Listed:
  • A. Ghaffari-Hadigheh

    (Azarbaijan Shahid Madani University)

  • L. Sinjorgo

    (Tilburg University)

  • R. Sotirov

    (Tilburg University)

Abstract

We propose a random coordinate descent algorithm for optimizing a non-convex objective function subject to one linear constraint and simple bounds on the variables. Although it is common use to update only two random coordinates simultaneously in each iteration of a coordinate descent algorithm, our algorithm allows updating arbitrary number of coordinates. We provide a proof of convergence of the algorithm. The convergence rate of the algorithm improves when we update more coordinates per iteration. Numerical experiments on large scale instances of different optimization problems show the benefit of updating many coordinates simultaneously.

Suggested Citation

  • A. Ghaffari-Hadigheh & L. Sinjorgo & R. Sotirov, 2024. "On convergence of a q-random coordinate constrained algorithm for non-convex problems," Journal of Global Optimization, Springer, vol. 90(4), pages 843-868, December.
    • Handle: RePEc:spr:jglopt:v:90:y:2024:i:4:d:10.1007_s10898-024-01429-6
    DOI: 10.1007/s10898-024-01429-6
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    References listed on IDEAS

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