Operations Research Transactions ›› 2022, Vol. 26 ›› Issue (1): 43-59.doi: 10.15960/j.cnki.issn.1007-6093.2022.01.003

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An equivalence condition for sparse optimization problem with non-negative constraints

Yaxing LYU1, Meijia HAN2, Zilin HUANG2, Wenxing ZHU2*,*()   

  1. 1. School of Mathematics and Statistics, Fuzhou University, Fuzhou 350116, Fujian, China
    2. Center for Discrete Mathematics and Theoretical Computer Science, FuzhouUniversity, Fuzhou 350116, Fujian, China
  • Received:2021-04-25 Online:2022-03-15 Published:2022-03-14
  • Contact: Wenxing ZHU E-mail:wxzhu@fzu.edu.cn

Abstract:

Weighted l1 minimization is one of the mainstream methods for sparse optimization. Since the l0 minimization problem is NP-hard, this paper studies the relationship between solutions of the l0 minimization problem and the weighted l1 minimization problem with non-negative constraints, and gives the definition of "s-weighted goodness" for the constraint matrix and the coefficient of the objective function. Through this definition, a sufficient condition is provided for a solution of the weighted l1 minimization problem to be a solution of the l0 minimization problem with non-negative constraints. Some results and proofs are provided from the perspective of monotonicity and robust stability. Further, this paper gives a sufficient condition for "s-weighted goodness", and shows lower and upper bounds of the sufficient condition, which are easy to check. Moreover, this paper also conducts an error analysis of the solution of the weighted l1 minimization problem.

Key words: linear programming, nonnegative sparse solution, error analysis, equivalence condition

CLC Number: