Evolution of glass forming ability indicator by genetic programming

The genetic programming structure for evolution of GFA expression in terms of Characteristics temperature (Tg, Tx and Tl) of bulk metallic glasses. Crossover of two parent computer programs, forming two offsprings. Parent:1 represents the expression (Tx/Tg) ∗ (Tx/Tg) ∗ (1/(Tg-Tl)), and Parent 2 the expression (Tx/Tg) + (1 − (Tx/Tl)), while their offsprings Child 1 and Child 2 respectively represent the expressions (Tx/Tg) ∗ (Tx/Tg) ∗ (1/(1 − (Tx/Tl))) and (Tx/Tg) + (Tg-Tl). The operators are represented by square nodes, containing one element from the set of functions F, while the terminals (constants or variables) by circular nodes containing one element from the set T.102