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Paper   IPM / M / 16543
School of Mathematics
  Title:   Sparsity constrained optimization problems via disjunctive programming
  Author(s):  Soghra Nobakhtian (Joint with N. Movahedian and M. Sarabadan)
  Status:   To Appear
  Journal: Optimization
  Supported by:  IPM
In this paper, we consider the problem of minimizing a continuously differentiable function subject to sparsity constraints. We formulate this problem as an equivalent disjunctive constrained optimization program. Then we extend some of the well known constraint qualifications by using the contingent and normal cones of the sparsity set and show that these constraint qualifications can be applied to obtain the first-order optimality conditions. In addition, we give the first-order sufficient optimality conditions by defining a new generalized convexity notion. Furthermore, we present the second-order necessary and sufficient optimality conditions for sparsity constrained optimization problems. Finally, we provide some examples and special cases to illustrate the obtained results.

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