Table 4 Optimized values of \({a}_{i}\) for the polynomial function.
From: Data-driven prediction of the equivalent sand-grain roughness
\({a}_{0}=\) 0.8878 | \({a}_{1}=\)−0.1987 | \({a}_{2}=\) 2.5543 |
\({a}_{3}=\) 0.3437 | \({a}_{4}=\) 5.0568 | \({a}_{5}=\) 0.3626 |
