NO | Formula | Authors |
1 |
| Hestenes and Stiefel (HS) [6] |
2 |
| Fletcher and Reeves (FR) [7] |
3 |
| Polak-Ribiere (PRP) [8] [9] |
4 |
| Conjugate Descent (CD) [10] |
5 |
| Liu and Storey (LS) [11] |
6 |
| Dai-Yuan method (DY) [12] |
7 |
| Al-Naemi and Hamed [13] |