Table 6 The relative errors of estimated UCS based on derived equations for gneiss.
No. | Actual UCS (MPa) | Estimated UCS by Eq. (4) | Estimated UCS by Eq. (5) | Estimated UCS by Eq. (7) | Estimated UCS by Eq. (8) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Value (MPa) | RE (%) | MAPE | Value (MPa) | RE (%) | MAPE | Value (MPa) | RE (%) | MAPE | Value (MPa) | RE (%) | MAPE | ||
A | 71.20 | 81.75 | 14.83 | 18.52 | – | – | – | 91.43 | 28.42 | 23.42 | 101.70 | 42.85 | 26.44 |
B | 126.67 | 97.57 | − 22.97 | – | – | – | 109.12 | − 13.86 | 121.38 | − 4.18 | |||
C | 126.68 | 112.36 | − 11.31 | – | – | – | 125.66 | − 0.81 | 139.78 | 10.34 | |||
D | 100.80 | 103.12 | 2.30 | – | – | – | 115.32 | 14.40 | 128.28 | 27.26 | |||
E | 43.39 | 52.58 | 21.20 | – | – | – | 58.81 | 35.55 | 65.42 | 50.78 | |||
F | 73.25 | 101.47 | 38.54 | – | – | – | 113.48 | 54.93 | 126.24 | 72.35 | |||
G | 99.07 | – | – | 108.50 | 9.52 | 10.72 | 85.92 | − 13.28 | 95.57 | − 3.53 | |||
H | 59.53 | – | – | – | 64.69 | 8.68 | 51.23 | − 13.94 | 56.99 | − 4.27 | |||
I | 79.58 | – | – | – | 71.07 | − 10.69 | 56.28 | − 29.28 | 62.61 | − 21.33 | |||
J | 106.13 | – | – | – | 100.37 | − 5.42 | 79.48 | − 25.11 | 88.42 | − 16.69 | |||
K | 70.31 | – | – | – | 55.41 | − 21.19 | 43.88 | − 37.60 | 48.81 | − 30.58 | |||
L | 82.38 | – | – | – | 89.64 | 8.81 | 70.98 | − 13.84 | 78.96 | − 4.15 | |||
M | 106.08 | – | – | – | – | 102.98 | − 2.92 | ||||||
N | 99.89 | – | – | – | – | 36.03 | − 63.93 | ||||||
O | 96.93 | – | – | – | – | – | – | 87.65 | − 9.57 | ||||
P | 121.30 | – | – | – | – | – | – | 43.95 | − 63.76 | ||||
Q | 109.85 | – | – | – | – | – | – | 111.16 | 1.19 | ||||
R | 114.64 | – | – | – | – | – | – | 59.80 | − 47.84 | ||||
S | 91.37 | – | – | – | – | – | – | 68.74 | − 24.77 | ||||
