“…Various methods for solving the NCP have been proposed in the literature (see, for example, [2,3,4,5,6,10,11,12,13,14,15,16,17,18,19,20,23,24]). Among which, one of the most popular and powerful approaches is to reformulate the NCP as an unconstrained minimization problem [2,4,5,7,8,9,18,19,20,24]. This kind of methods is called the merit function method, where the merit function is generally constructed by some NCP-function.…”