Research Article
Classification of Error-Diffused Halftone Images Based on Spectral Regression Kernel Discriminant Analysis
Table 4
The training and testing time under different sample sizes (in seconds).
| ā | ā | 14000 | 15000 | 16000 | 17000 | 18000 | 19000 | 20000 | 21000 | 22000 |
| | Training time | 65.208 | 78.317 | 94.660 | 110.47 | 129.32 | 150.18 | 178.94 | 205.11 | 513.54 | Testing time | 6.3742 | 6.2583 | 5.8530 | 5.5251 | 4.8792 | 4.4947 | 3.7872 | 3.0375 | 4.3393 |
| | Training time | 65.851 | 78.796 | 95.113 | 110.70 | 130.97 | 150.76 | 173.98 | 198.95 | 240.10 | Testing time | 6.3674 | 6.0804 | 5.7496 | 5.503 | 4.9287 | 4.3261 | 3.6775 | 3.0353 | 2.9631 |
| | Training time | 65.662 | 79.936 | 95.173 | 110.69 | 130.33 | 150.63 | 174.41 | 198.34 | 239.96 | Testing time | 6.5226 | 6.1817 | 5.7826 | 5.3778 | 4.8531 | 4.5513 | 3.7137 | 2.9735 | 3.0597 |
| | Training time | 68.902 | 82.554 | 99.189 | 115.27 | 135.34 | 156.71 | 179.94 | 204.85 | 288.36 | Testing time | 10.200 | 9.8393 | 9.3112 | 8.7212 | 8.016 | 6.902 | 5.8556 | 4.9363 | 3.6921 |
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