Table 1 Functions for the single-peak problem.
From: IWOA-LSTM based intrinsic structural identification of steel fiber concrete
Function | D | Search space | \(\it \:{\text{f}}_{\text{m}\text{i}\text{n}}\) |
|---|---|---|---|
\(\:{f}_{1}\left(x\right)={\sum\:}_{i=1}^{n}{x}_{i}^{2}\) | 30 | \(\:{\left[-\text{100,100}\right]}^{D}\) | 0 |
\(\:{f}_{2}\left(x\right)={\sum\:}_{i=1}^{n}\left|{x}_{i}\right|+{\prod\:}_{i=1}^{n}\left|{x}_{i}\right|\) | 30 | \(\:{\left[-\text{10,10}\right]}^{D}\) | 0 |
\(\:{f}_{3}\left(x\right)={\sum\:}_{i=1}^{n}({\sum\:}_{j-1}^{i}{x}_{j}{)}^{2}\) | 30 | \(\:{\left[-\text{100,100}\right]}^{D}\) | 0 |
\(\:{f}_{4}\left(x\right)={{max}}_{i}\{\left|{x}_{i}\right|,1\le\:i\le\:n\}\) | 30 | \(\:{\left[-\text{100,100}\right]}^{D}\) | 0 |
\(\:{f}_{5}=\sum\:_{i=1}^{n-1}\left[100{\left({x}_{i+1}-{x}_{i}^{2}\right)}^{2}+{\left({x}_{i}\right)-1}^{2}\right]\) | 30 | \(\:{\left[-\text{30,30}\right]}^{D}\) | 0 |
