Combined Monte Carlo sampling and penalty method for Stochastic nonlinear complementarity problems

In this paper, we consider a new formulation with recourse for a class of stochastic nonlinear complementarity problems. We show that the new formulation is equivalent to a smooth semi-infinite program that no longer contains recourse variables. We then propose a combined Monte Carlo sampling and penalty method for solving the problem in which the underlying sample space is assumed to be compact. Furthermore, we suggest a compact approximation approach for the case where the sample space is unbounded. Two preliminary numerical examples are included as well.