Evolutionary Computation Techniques for Predicting Atmospheric Corrosion

Table 5

The best five expressions obtained for the corrosion expression of zinc using the GP.

Rank	Exp. size	Exp. fitness	𝑅	Expression
1	41	13	0.91393	𝐸SO2−𝑇+Cl^−/TOW−SO2+(𝑇/TOW)+(𝑇/TOW)+TOW^2Cl^−/𝐸(𝑇/TOW)+TOWSO2/Cl^−+1
2	49	14	0.91079	SO2𝐸(8𝑇/5)+TOW+SO2+(9/5)/Cl^−2−63Cl^−((63𝑇/100)−(8/5))/100SO2+()+941/55
3	35	13	0.90884	37𝐸13SO2/20−(8TOW/25)+(17Cl^−/25)+(8Cl^−((11𝐸/10)−10)/25𝑇)+610005
4	27	15	0.89585	13𝐸−2507TOW+20SO2𝐸+4041TOWCl^−𝐸+10001110
5	31	18	0.88132	3TOWSO2𝐸((+102TOW+14/5))TOW^2Cl^−𝐸^24SO2