“…The real effective optimization of multi-element model is not really. The algorithms of condensation a model are here usually used to a little size model on which it is possible to make optimization (Kernytskyy, Diveyev, Vybranets & Kernytskyy, 2008;Diveyev, Vikovych, Dorosh & Kernytskyy, 2012;Sava, Kernytskyy & Diveyev, 2013;Diveyev, Beshley, Konyk & Kernytskyy, 2015a;Diveyev, Kernytskyy, Kopytko, Konyk & Kogut, 2015b;Diveyev, Horbay, Kernytskyy, Pelekh & Velhan, 2017;. The large number of articles on this subject during several decades shows that clear quantitative results are very hard to obtain.…”