Among all four main categories of variables, pile properties had the highest percentage of repeat, while, the loading history had the lowest repeat percentage.
The information in Fig. 5 helps us to see which parameters in each category has had the highest repeat percentage.
The percentage of repeat for the four categories of ANN input variables is depicted in Fig. 4 where pile properties had the highest percentage of repeat, while, the loading history had the lowest repeat percentage.
For the loading history presented in Fig. 5b, the elapsed time after driving with 57% contribution, had the highest repeat percentage.
In soil properties category (Fig. 5d), the effective overburden stress with 28% repeat percentage, had the highest repeat rate among previous related studies where shear resistance of the soil surrounding the pile shaft, soil type around the pile shaft, and undrained shear strength has equal usage of 12% in previous ANN studies on piles.
In hammer/SPT/CPT information category, hammer weight, hammer drop height, driving energy delivered to the pile, and average SPT Along the pile shaft had similar repeat percentage of 16% and were the highest applied variables as an input of ANN models (Fig. 5c).
The repeat libraries were then aligned back to CDC and EC contigs using Nucmer to calculate the repeat percentage for each group.
Notably, it has been shown that sensitivity of various measures, such as the total length of the tandem repeat, the percentage matches between adjacent copies of the repeat unit, and the GC content of a tandem repeat, while significant predictors of polymorphism, can vary in their predictive power between different species [ 1, 10].
Similar to ANN, among the four main categories of variables, pile properties had the highest percentage of repeat; however, the percentage of using pile properties in ANN (52%) was 16% larger than its usage in GP (36%).
