Table 5.
Experimental, Predicted and Absolute Error (AE) Values of 156 Training and 36 Test Set Compounds.
| No. | pIC50exp | MLR | AE | ANN | AE | SVM | AE |
|---|---|---|---|---|---|---|---|
| pIC50 pred | pIC50 pred | pIC50pred | |||||
| Training set | |||||||
| 1 | 9.21 | 8.61 | 0.597 | 8.75 | 0.463 | 8.69 | 0.520 |
| 2 | 9.43 | 8.96 | 0.467 | 9.13 | 0.304 | 8.98 | 0.445 |
| 3 | 7.02 | 8.48 | 1.463 | 8.34 | 1.321 | 8.59 | 1.570 |
| 4 | 8.66 | 8.66 | 0.002 | 8.64 | 0.023 | 8.64 | 0.019 |
| 5 | 8.92 | 8.89 | 0.031 | 8.92 | 0.003 | 8.92 | 0.003 |
| 6 | 9.31 | 8.59 | 0.716 | 8.82 | 0.491 | 8.79 | 0.518 |
| 7 | 9.21 | 8.72 | 0.486 | 8.58 | 0.631 | 8.62 | 0.586 |
| 8 | 7.89 | 8.48 | 0.593 | 8.65 | 0.756 | 8.45 | 0.555 |
| 9 | 8.89 | 9.06 | 0.168 | 9.07 | 0.180 | 8.92 | 0.032 |
| 10 | 9.36 | 9.14 | 0.216 | 9.28 | 0.077 | 9.07 | 0.295 |
| 11 | 8.12 | 8.37 | 0.254 | 8.39 | 0.270 | 8.38 | 0.264 |
| 12 | 9.43 | 8.80 | 0.633 | 9.13 | 0.304 | 8.92 | 0.512 |
| 13 | 9.22 | 8.95 | 0.272 | 8.65 | 0.569 | 8.88 | 0.336 |
| 14 | 8.08 | 8.44 | 0.355 | 8.56 | 0.482 | 8.33 | 0.249 |
| 15 | 9.09 | 8.21 | 0.877 | 8.21 | 0.880 | 8.42 | 0.665 |
| 16 | 9.04 | 9.35 | 0.311 | 9.16 | 0.120 | 9.21 | 0.165 |
| 17 | 8.89 | 9.29 | 0.402 | 9.09 | 0.202 | 9.04 | 0.154 |
| 18 | 9.34 | 8.38 | 0.956 | 8.72 | 0.619 | 8.47 | 0.874 |
| 19 | 9.57 | 8.80 | 0.770 | 8.92 | 0.645 | 8.97 | 0.600 |
| 20 | 10.00 | 8.71 | 1.293 | 8.87 | 1.131 | 8.92 | 1.081 |
| 21 | 8.37 | 8.44 | 0.066 | 8.68 | 0.314 | 8.37 | 0.004 |
| 22 | 8.77 | 7.91 | 0.865 | 8.03 | 0.738 | 7.96 | 0.806 |
| 23 | 8.52 | 8.65 | 0.134 | 8.85 | 0.328 | 8.84 | 0.317 |
| 24 | 9.24 | 8.87 | 0.368 | 8.95 | 0.293 | 9.08 | 0.156 |
| 25 | 8.52 | 8.79 | 0.267 | 8.91 | 0.387 | 9.01 | 0.494 |
| 26 | 8.00 | 7.93 | 0.067 | 7.81 | 0.193 | 8.00 | 0.004 |
| 27 | 6.47 | 7.42 | 0.947 | 7.40 | 0.932 | 7.67 | 1.200 |
| 28 | 8.17 | 8.87 | 0.702 | 8.79 | 0.624 | 8.76 | 0.592 |
| 29 | 9.02 | 9.14 | 0.118 | 9.27 | 0.254 | 9.02 | 0.003 |
| 30 | 8.19 | 8.00 | 0.190 | 7.87 | 0.319 | 8.04 | 0.150 |
| 31 | 8.70 | 8.58 | 0.121 | 8.28 | 0.415 | 8.54 | 0.161 |
| 32 | 9.21 | 8.95 | 0.258 | 8.89 | 0.322 | 8.98 | 0.229 |
| 33 | 9.37 | 8.80 | 0.571 | 8.65 | 0.721 | 8.67 | 0.702 |
| 34 | 9.12 | 8.84 | 0.278 | 8.97 | 0.154 | 8.81 | 0.307 |
| 35 | 9.06 | 9.01 | 0.053 | 9.01 | 0.045 | 8.96 | 0.103 |
| 36 | 9.40 | 8.76 | 0.639 | 8.76 | 0.639 | 8.63 | 0.773 |
| 37 | 9.08 | 8.82 | 0.256 | 8.91 | 0.167 | 8.82 | 0.264 |
| 38 | 9.00 | 9.31 | 0.315 | 9.00 | 0.005 | 9.07 | 0.074 |
| 39 | 8.70 | 9.16 | 0.456 | 9.32 | 0.615 | 9.08 | 0.375 |
| 40 | 8.77 | 9.27 | 0.500 | 8.73 | 0.038 | 9.04 | 0.271 |
| 41 | 7.92 | 8.20 | 0.279 | 8.22 | 0.297 | 8.10 | 0.181 |
| 42 | 7.24 | 7.70 | 0.463 | 7.39 | 0.154 | 7.82 | 0.576 |
| 43 | 8.09 | 8.87 | 0.783 | 8.56 | 0.472 | 8.70 | 0.605 |
| 44 | 8.07 | 8.39 | 0.322 | 8.69 | 0.623 | 8.26 | 0.192 |
| 45 | 7.60 | 8.13 | 0.531 | 7.98 | 0.377 | 7.96 | 0.360 |
| 46 | 9.04 | 8.68 | 0.362 | 9.10 | 0.055 | 8.39 | 0.655 |
| 47 | 9.05 | 9.40 | 0.348 | 9.06 | 0.007 | 9.05 | 0.003 |
| 48 | 9.00 | 8.77 | 0.228 | 8.97 | 0.031 | 8.96 | 0.036 |
| 49 | 9.01 | 9.05 | 0.036 | 9.06 | 0.046 | 9.01 | 0.001 |
| 50 | 9.24 | 8.94 | 0.299 | 9.17 | 0.067 | 8.97 | 0.267 |
| 51 | 9.14 | 8.56 | 0.580 | 8.80 | 0.342 | 8.65 | 0.493 |
| 52 | 9.60 | 9.71 | 0.109 | 9.50 | 0.099 | 9.64 | 0.045 |
| 53 | 8.41 | 9.10 | 0.687 | 9.04 | 0.627 | 9.24 | 0.834 |
| 54 | 9.74 | 9.00 | 0.741 | 9.11 | 0.632 | 9.00 | 0.735 |
| 55 | 9.74 | 8.78 | 0.956 | 8.88 | 0.855 | 8.81 | 0.930 |
| 56 | 9.29 | 9.05 | 0.239 | 9.16 | 0.129 | 9.13 | 0.157 |
| 57 | 9.15 | 9.29 | 0.145 | 9.38 | 0.227 | 9.27 | 0.119 |
| 58 | 9.35 | 8.84 | 0.507 | 9.09 | 0.256 | 9.07 | 0.281 |
| 59 | 7.36 | 7.95 | 0.594 | 7.70 | 0.341 | 8.22 | 0.858 |
| 60 | 8.72 | 8.15 | 0.575 | 8.51 | 0.213 | 8.12 | 0.597 |
| 61 | 8.32 | 8.03 | 0.285 | 7.88 | 0.438 | 8.05 | 0.270 |
| 62 | 8.72 | 8.34 | 0.377 | 8.42 | 0.296 | 8.45 | 0.274 |
| 63 | 8.26 | 8.21 | 0.045 | 8.19 | 0.073 | 8.30 | 0.035 |
| 64 | 7.33 | 8.20 | 0.870 | 8.23 | 0.897 | 8.25 | 0.921 |
| 65 | 8.82 | 8.28 | 0.542 | 8.12 | 0.701 | 8.32 | 0.499 |
| 66 | 8.68 | 7.70 | 0.981 | 7.62 | 1.059 | 7.79 | 0.886 |
| 67 | 6.80 | 7.63 | 0.828 | 7.36 | 0.559 | 7.85 | 1.046 |
| 68 | 9.70 | 8.90 | 0.796 | 8.92 | 0.784 | 8.81 | 0.894 |
| 69 | 8.46 | 8.79 | 0.332 | 8.86 | 0.398 | 8.84 | 0.380 |
| 70 | 8.89 | 8.92 | 0.029 | 8.83 | 0.063 | 8.89 | 0.001 |
| 71 | 8.70 | 8.93 | 0.227 | 8.92 | 0.216 | 8.70 | 0.000 |
| 72 | 8.89 | 8.97 | 0.082 | 8.91 | 0.016 | 8.71 | 0.178 |
| 73 | 8.44 | 8.61 | 0.165 | 8.70 | 0.264 | 8.46 | 0.020 |
| 74 | 8.74 | 8.40 | 0.343 | 8.57 | 0.166 | 8.48 | 0.256 |
| 75 | 8.77 | 8.07 | 0.697 | 8.12 | 0.653 | 8.37 | 0.398 |
| 76 | 8.59 | 8.12 | 0.472 | 8.26 | 0.329 | 8.45 | 0.140 |
| 77 | 8.89 | 8.42 | 0.468 | 8.48 | 0.413 | 8.67 | 0.218 |
| 78 | 8.11 | 8.06 | 0.052 | 8.32 | 0.206 | 8.11 | 0.002 |
| 79 | 8.12 | 8.49 | 0.372 | 8.81 | 0.690 | 8.43 | 0.308 |
| 80 | 8.04 | 7.70 | 0.344 | 8.00 | 0.044 | 8.04 | 0.003 |
| 81 | 8.00 | 8.19 | 0.190 | 8.48 | 0.484 | 8.26 | 0.262 |
| 82 | 7.08 | 7.72 | 0.640 | 7.74 | 0.661 | 7.70 | 0.616 |
| 83 | 7.27 | 7.51 | 0.237 | 7.49 | 0.218 | 7.53 | 0.262 |
| 84 | 7.21 | 7.56 | 0.354 | 7.36 | 0.147 | 7.47 | 0.263 |
| 85 | 7.27 | 8.05 | 0.779 | 7.83 | 0.562 | 7.94 | 0.674 |
| 86 | 7.29 | 7.30 | 0.008 | 7.39 | 0.097 | 7.29 | 0.001 |
| 87 | 7.06 | 7.14 | 0.077 | 6.85 | 0.206 | 7.12 | 0.062 |
| 88 | 7.77 | 8.13 | 0.357 | 7.80 | 0.027 | 7.98 | 0.210 |
| 89 | 7.23 | 7.81 | 0.579 | 7.48 | 0.248 | 7.76 | 0.534 |
| 90 | 8.08 | 7.94 | 0.144 | 7.98 | 0.096 | 8.08 | 0.005 |
| 91 | 7.80 | 7.68 | 0.119 | 7.73 | 0.067 | 7.80 | 0.003 |
| 92 | 8.09 | 7.48 | 0.606 | 7.48 | 0.611 | 7.56 | 0.527 |
| 93 | 7.92 | 8.05 | 0.128 | 8.20 | 0.281 | 8.12 | 0.202 |
| 94 | 7.21 | 7.72 | 0.510 | 7.80 | 0.589 | 7.76 | 0.553 |
| 95 | 7.74 | 7.74 | 0.002 | 7.75 | 0.010 | 7.73 | 0.013 |
| 96 | 8.40 | 8.09 | 0.309 | 8.36 | 0.043 | 8.08 | 0.325 |
| 97 | 7.42 | 7.68 | 0.257 | 7.69 | 0.274 | 7.79 | 0.371 |
| 98 | 7.49 | 7.49 | 0.003 | 7.44 | 0.049 | 7.57 | 0.080 |
| 99 | 7.32 | 7.60 | 0.283 | 7.46 | 0.139 | 7.57 | 0.248 |
| 100 | 7.96 | 7.65 | 0.313 | 7.58 | 0.381 | 7.61 | 0.353 |
| 101 | 7.92 | 7.36 | 0.565 | 7.28 | 0.640 | 7.35 | 0.566 |
| 102 | 7.48 | 8.00 | 0.518 | 8.09 | 0.610 | 8.08 | 0.604 |
| 103 | 7.21 | 7.41 | 0.203 | 7.33 | 0.119 | 7.50 | 0.294 |
| 104 | 8.21 | 7.76 | 0.446 | 7.87 | 0.338 | 7.89 | 0.320 |
| 105 | 7.57 | 7.53 | 0.043 | 7.54 | 0.028 | 7.58 | 0.007 |
| 106 | 7.72 | 7.63 | 0.089 | 7.48 | 0.242 | 7.72 | 0.003 |
| 107 | 7.82 | 7.74 | 0.084 | 7.75 | 0.066 | 7.79 | 0.027 |
| 108 | 7.89 | 7.72 | 0.168 | 7.52 | 0.371 | 7.83 | 0.061 |
| 109 | 7.54 | 7.45 | 0.090 | 7.35 | 0.186 | 7.54 | 0.002 |
| 110 | 8.77 | 8.37 | 0.399 | 8.46 | 0.311 | 8.32 | 0.451 |
| 111 | 8.21 | 8.22 | 0.007 | 8.13 | 0.084 | 8.24 | 0.029 |
| 112 | 8.39 | 7.98 | 0.413 | 8.12 | 0.265 | 7.93 | 0.459 |
| 113 | 8.57 | 8.68 | 0.106 | 8.73 | 0.159 | 8.57 | 0.004 |
| 114 | 8.05 | 8.38 | 0.333 | 8.53 | 0.476 | 8.38 | 0.333 |
| 115 | 8.80 | 9.00 | 0.197 | 8.81 | 0.010 | 8.88 | 0.078 |
| 116 | 8.68 | 9.30 | 0.624 | 9.21 | 0.528 | 9.26 | 0.584 |
| 117 | 9.08 | 9.24 | 0.160 | 9.26 | 0.178 | 9.18 | 0.104 |
| 118 | 8.82 | 8.98 | 0.157 | 9.04 | 0.225 | 8.97 | 0.145 |
| 119 | 8.57 | 8.92 | 0.352 | 9.01 | 0.443 | 8.84 | 0.272 |
| 120 | 8.57 | 8.89 | 0.322 | 8.90 | 0.333 | 8.86 | 0.288 |
| 121 | 8.20 | 8.91 | 0.710 | 8.92 | 0.723 | 8.89 | 0.687 |
| 122 | 9.15 | 9.13 | 0.018 | 9.21 | 0.058 | 9.12 | 0.028 |
| 123 | 8.96 | 9.12 | 0.162 | 9.15 | 0.192 | 9.07 | 0.106 |
| 124 | 8.74 | 8.85 | 0.106 | 8.87 | 0.127 | 8.81 | 0.068 |
| 125 | 9.29 | 8.88 | 0.412 | 8.88 | 0.411 | 8.88 | 0.408 |
| 126 | 9.39 | 9.13 | 0.260 | 9.11 | 0.280 | 9.25 | 0.142 |
| 127 | 9.14 | 8.93 | 0.215 | 8.91 | 0.228 | 8.97 | 0.168 |
| 128 | 9.38 | 8.87 | 0.513 | 8.97 | 0.408 | 9.02 | 0.357 |
| 129 | 9.16 | 8.67 | 0.490 | 8.70 | 0.457 | 8.82 | 0.340 |
| 130 | 9.01 | 9.14 | 0.129 | 9.24 | 0.230 | 9.01 | 0.005 |
| 131 | 9.12 | 9.17 | 0.049 | 9.22 | 0.096 | 9.13 | 0.005 |
| 132 | 9.00 | 9.07 | 0.070 | 8.83 | 0.166 | 9.08 | 0.075 |
| 133 | 9.34 | 9.64 | 0.303 | 9.07 | 0.271 | 9.34 | 0.003 |
| 134 | 9.11 | 9.17 | 0.065 | 9.28 | 0.168 | 9.08 | 0.030 |
| 135 | 9.38 | 9.13 | 0.246 | 9.07 | 0.314 | 9.02 | 0.363 |
| 136 | 9.09 | 9.68 | 0.592 | 9.08 | 0.013 | 9.33 | 0.244 |
| 137 | 9.44 | 9.03 | 0.410 | 9.12 | 0.323 | 9.00 | 0.437 |
| 138 | 9.05 | 8.92 | 0.135 | 9.00 | 0.053 | 8.93 | 0.124 |
| 139 | 8.41 | 8.98 | 0.566 | 8.66 | 0.247 | 8.90 | 0.495 |
| 140 | 8.89 | 8.68 | 0.213 | 8.65 | 0.241 | 8.74 | 0.153 |
| 141 | 8.19 | 8.58 | 0.392 | 8.55 | 0.362 | 8.74 | 0.553 |
| 142 | 9.07 | 9.32 | 0.248 | 9.08 | 0.011 | 9.07 | 0.001 |
| 143 | 10.44 | 9.38 | 1.062 | 9.35 | 1.086 | 9.35 | 1.088 |
| 144 | 9.30 | 8.89 | 0.406 | 9.08 | 0.225 | 9.03 | 0.269 |
| 145 | 7.15 | 7.86 | 0.707 | 7.54 | 0.385 | 7.75 | 0.604 |
| 146 | 8.28 | 8.50 | 0.218 | 8.57 | 0.290 | 8.43 | 0.148 |
| 147 | 8.00 | 8.34 | 0.337 | 8.17 | 0.166 | 8.26 | 0.257 |
| 148 | 8.92 | 8.88 | 0.035 | 8.91 | 0.014 | 8.92 | 0.004 |
| 149 | 8.12 | 8.73 | 0.609 | 8.65 | 0.535 | 8.70 | 0.575 |
| 150 | 7.96 | 8.27 | 0.313 | 8.50 | 0.537 | 8.37 | 0.409 |
| 151 | 7.92 | 8.60 | 0.678 | 8.51 | 0.592 | 8.71 | 0.792 |
| 152 | 7.72 | 8.67 | 0.950 | 8.94 | 1.221 | 8.71 | 0.994 |
| 153 | 8.52 | 8.42 | 0.101 | 8.72 | 0.199 | 8.52 | 0.001 |
| 154 | 8.64 | 8.70 | 0.057 | 8.70 | 0.061 | 8.64 | 0.005 |
| 155 | 8.30 | 8.69 | 0.386 | 8.96 | 0.664 | 8.67 | 0.365 |
| 156 | 8.68 | 8.57 | 0.108 | 8.80 | 0.122 | 8.58 | 0.101 |
| Test set | |||||||
| 157 | 8.85 | 8.73 | 0.117 | 8.71 | 0.139 | 8.82 | 0.031 |
| 158 | 8.37 | 8.43 | 0.064 | 8.63 | 0.257 | 8.36 | 0.006 |
| 159 | 8.36 | 8.77 | 0.411 | 8.88 | 0.519 | 9.00 | 0.636 |
| 160 | 8.82 | 8.59 | 0.226 | 8.80 | 0.020 | 8.88 | 0.061 |
| 161 | 8.32 | 8.78 | 0.457 | 8.82 | 0.504 | 8.97 | 0.655 |
| 162 | 8.32 | 8.38 | 0.065 | 8.23 | 0.094 | 8.16 | 0.163 |
| 163 | 9.19 | 8.78 | 0.405 | 9.03 | 0.163 | 8.83 | 0.359 |
| 164 | 7.17 | 8.49 | 1.316 | 8.42 | 1.249 | 8.40 | 1.225 |
| 165 | 9.29 | 8.64 | 0.652 | 8.75 | 0.539 | 8.66 | 0.627 |
| 166 | 9.09 | 8.93 | 0.158 | 9.05 | 0.038 | 9.14 | 0.051 |
| 167 | 9.80 | 9.75 | 0.051 | 9.43 | 0.375 | 9.56 | 0.236 |
| 168 | 9.10 | 9.11 | 0.009 | 8.82 | 0.279 | 9.11 | 0.013 |
| 169 | 7.85 | 8.85 | 0.997 | 8.52 | 0.670 | 8.85 | 0.998 |
| 170 | 8.92 | 8.64 | 0.284 | 8.88 | 0.042 | 8.73 | 0.186 |
| 171 | 7.89 | 7.56 | 0.326 | 7.70 | 0.192 | 7.58 | 0.312 |
| 172 | 7.23 | 7.51 | 0.284 | 7.42 | 0.190 | 7.63 | 0.401 |
| 173 | 7.15 | 7.74 | 0.595 | 7.80 | 0.647 | 7.74 | 0.595 |
| 174 | 7.72 | 7.68 | 0.037 | 7.54 | 0.176 | 7.72 | 0.003 |
| 175 | 7.89 | 7.68 | 0.212 | 7.64 | 0.248 | 7.69 | 0.203 |
| 176 | 7.70 | 7.68 | 0.018 | 7.67 | 0.033 | 7.65 | 0.054 |
| 177 | 7.89 | 8.44 | 0.549 | 9.02 | 1.131 | 8.22 | 0.327 |
| 178 | 8.12 | 7.84 | 0.280 | 7.98 | 0.135 | 7.93 | 0.187 |
| 179 | 7.42 | 7.70 | 0.285 | 7.66 | 0.244 | 7.80 | 0.383 |
| 180 | 7.09 | 7.98 | 0.888 | 7.86 | 0.770 | 7.85 | 0.764 |
| 181 | 9.36 | 9.00 | 0.364 | 9.08 | 0.280 | 8.98 | 0.379 |
| 182 | 9.31 | 9.59 | 0.277 | 9.18 | 0.126 | 9.34 | 0.029 |
| 183 | 8.21 | 9.05 | 0.841 | 8.83 | 0.625 | 8.90 | 0.692 |
| 184 | 9.17 | 9.05 | 0.117 | 9.05 | 0.120 | 9.22 | 0.051 |
| 185 | 9.38 | 8.92 | 0.458 | 8.89 | 0.493 | 9.06 | 0.316 |
| 186 | 8.89 | 9.23 | 0.335 | 9.25 | 0.355 | 9.14 | 0.250 |
| 187 | 8.70 | 9.05 | 0.349 | 8.91 | 0.207 | 9.10 | 0.401 |
| 188 | 9.14 | 9.31 | 0.171 | 9.30 | 0.161 | 9.34 | 0.204 |
| 189 | 8.72 | 8.71 | 0.006 | 8.72 | 0.001 | 8.55 | 0.168 |
| 190 | 8.96 | 8.88 | 0.076 | 9.23 | 0.270 | 8.83 | 0.132 |
| 191 | 8.89 | 8.68 | 0.209 | 8.82 | 0.071 | 8.68 | 0.211 |
| 192 | 8.68 | 8.50 | 0.181 | 8.66 | 0.017 | 8.54 | 0.144 |