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- Updated October 21st, 2005
Global data
774 SDSS images in u, g, r, i, z bands.
PGC catalog.
See this article
Automatic system configuration
774 SDSS images in g, r, i bands.
Invariant computation
PCA with g, r and i images
1st system
Perceptron 30-15-1 with g images
See this article
2nd system
Support Vector machine with gamma = 5 and cost = 1000
See LibSVM website
Astronomers
774 SDSS images in g band.
See the manual classification system manclass
Classified T vs Expected T (RC3)
 Multi-layer perceptron |
 Support vector machine |
Residuals plots
Sigma table
| Classifier | Slope | Sigma1 | Sigma2 |
| Astronomer (pink) | 0.8691 | 0.5703 | 2.0259 |
| Astronomer (cyan) | 0.6463 | 1.4856 | 3.1803 |
| multi-layer perceptron | 0.8099 | 0.8332 | 2.9685 |
| support vector machine | 0.8328 | 0.7017 | 2.6622 | |
