Open Access

Table A.3

Confusion matrix, precision, and recall for the reverse selection method (Sect. 5.5).

Predicted class:
Confusion matrix: Galaxy QSOhighZ QSOlowZ Star other TOTAL

True class: Galaxy 25628 8 657 3389 434 30116
QSOhighZ 0 327 29 24 2 382
QSOlowZ 277 203 2615 77 82 3254
Star 772 54 31 5596316 10 5597183
other 322 1 18 2 91 434

TOTAL 26999 593 3350 5599808 619 5631369

True class: Precision: Galaxy QSOhighZ QSOlowZ Star other

Galaxy 94.9% 1.3% 19.6% 0.1% 70.1%
QSOhighZ 0.0% 55.1% 0.9% 0.0% 0.3%
QSOlowZ 1.0% 34.2% 78.1% 0.0% 13.2%
Star 2.9% 9.1% 0.9% 99.9% 1.6%
other 1.2% 0.2% 0.5% 0.0% 14.7%

TOTAL 100% 100% 100% 100% 100%

True class: Recall: Galaxy QSOhighZ QSOlowZ Star other TOTAL

Galaxy 85.1% 0.0% 2.2% 11.3% 1.4% 100%
QSOhighZ 0.0% 85.6% 7.6% 6.3% 0.5% 100%
QSOlowZ 8.5% 6.2% 80.4% 2.4% 2.5% 100%
Star 0.0% 0.0% 0.0% 100.0% 0.0% 100%
other 74.2% 0.2% 4.1% 0.5% 21.0% 100%

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