TY - GEN A1 - El Mouatasim, Abdelkrim A1 - Ellaia, Rachid A1 - Souza de Cursi, José E. A2 - Korbicz, Józef - red. A2 - Uciński, Dariusz - red. PB - Zielona Góra: Uniwersytet Zielonogórski N2 - We consider the global optimization of a nonsmooth (nondifferentiable) nonconvex real function. We introduce a variable metric descent method adapted to nonsmooth situations, which is modified by the incorporation of suitable random perturbations. N2 - Convergence to a global minimum is established and a simple method for the generation of suitable perturbations is introduced. An algorithm is proposed and numerical results are presented, showing that the method is computationally effective and stable. L1 - http://www.zbc.uz.zgora.pl/Content/57552/AMCS_2006_16_4_4.pdf L2 - http://www.zbc.uz.zgora.pl/Content/57552 KW - nonconvex optimization KW - stochastic perturbation KW - variable metric method KW - nonsmooth optimization KW - generalized gradient T1 - Random perturbation of the variable metric method for unconstrained nonsmooth nonconvex optimization UR - http://www.zbc.uz.zgora.pl/dlibra/docmetadata?id=57552 ER -