Research Article
Evolution of Deep Neural Network Architecture Using Particle Swarm Optimization to Improve the Performance in Determining the Friction Angle of Soil
Table 2
Soil state number explanation.
| Soil type | Soil state number | Soil type-state |
| Clay | 1 | Very soft clay | 2 | Soft clay | 3 | Firm clay | 4 | Stiff clay | 5 | Very stiff clay | 6 | Hard clay |
| Sand | 7 | Loose sandy | 8 | Medium sandy | 9 | Dense sandy |
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