Table 7 Number of occurrences of each variable in the expressions presented in Sect. 6.5.
From: Accurate High Performance Concrete Prediction with an Alignment-Based Genetic Programming System
Variable | X0 | X1 | X2 | X3 | X4 | X5 | X6 | X7 |
|---|---|---|---|---|---|---|---|---|
Number of occurrences | 6 | 9 | 7 | 7 | 7 | 4 | 14 | 13 |