Literature DB >> 29335660

Can Linear Superiorization Be Useful for Linear Optimization Problems?

Yair Censor1.   

Abstract

Linear superiorization considers linear programming problems but instead of attempting to solve them with linear optimization methods it employs perturbation resilient feasibility-seeking algorithms and steers them toward reduced (not necessarily minimal) target function values. The two questions that we set out to explore experimentally are (i) Does linear superiorization provide a feasible point whose linear target function value is lower than that obtained by running the same feasibility-seeking algorithm without superiorization under identical conditions? and (ii) How does linear superiorization fare in comparison with the Simplex method for solving linear programming problems? Based on our computational experiments presented here, the answers to these two questions are: "yes" and "very well", respectively.

Entities:  

Keywords:  Agmon-Motzkin-Schoenberg algorithm; Simplex algorithm; Superiorization; algorithmic operator; bounded perturbation resilience; feasibility-seeking; linear feasibility problem; linear inequalities; linear programming; linear superiorization

Year:  2017        PMID: 29335660      PMCID: PMC5766045          DOI: 10.1088/1361-6420/33/4/044006

Source DB:  PubMed          Journal:  Inverse Probl        ISSN: 0266-5611            Impact factor:   2.407


  7 in total

1.  Rational choice and the structure of the environment.

Authors:  H A SIMON
Journal:  Psychol Rev       Date:  1956-03       Impact factor: 8.934

2.  Total variation superiorization schemes in proton computed tomography image reconstruction.

Authors:  S N Penfold; R W Schulte; Y Censor; A B Rosenfeld
Journal:  Med Phys       Date:  2010-11       Impact factor: 4.071

3.  Superiorization: an optimization heuristic for medical physics.

Authors:  Gabor T Herman; Edgar Garduno; Ran Davidi; Yair Censor
Journal:  Med Phys       Date:  2012-09       Impact factor: 4.071

4.  Perturbation-resilient block-iterative projection methods with application to image reconstruction from projections.

Authors:  R Davidi; G T Herman; Y Censor
Journal:  Int Trans Oper Res       Date:  2008-02-11       Impact factor: 4.193

5.  Data fusion in X-ray computed tomography using a superiorization approach.

Authors:  Michael J Schrapp; Gabor T Herman
Journal:  Rev Sci Instrum       Date:  2014-05       Impact factor: 1.523

6.  Perturbation Resilience and Superiorization of Iterative Algorithms.

Authors:  Y Censor; R Davidi; G T Herman
Journal:  Inverse Probl       Date:  2010-06-01       Impact factor: 2.407

7.  Accelerated perturbation-resilient block-iterative projection methods with application to image reconstruction.

Authors:  T Nikazad; R Davidi; G T Herman
Journal:  Inverse Probl       Date:  2012-02-10       Impact factor: 2.407

  7 in total
  2 in total

1.  An Improved Method of Total Variation Superiorization Applied to Reconstruction in Proton Computed Tomography.

Authors:  Blake Schultze; Yair Censor; Paniz Karbasi; Keith E Schubert; Reinhard W Schulte
Journal:  IEEE Trans Med Imaging       Date:  2019-04-16       Impact factor: 10.048

2.  Derivative-free superiorization with component-wise perturbations.

Authors:  Yair Censor; Howard Heaton; Reinhard Schulte
Journal:  Numer Algorithms       Date:  2018-04-11       Impact factor: 3.041

  2 in total

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