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1
0.9
0.8
f
1
0.7
f
2
0.6
0.5
0.4
0.3
0.2
0.1
0
0.2
0.4
0.6
0.8
1
False positive rate
Figure 8.1
The ROC curves for two hypothetical scoring classifiers
f
1
and
f
2
.
1
0.9
0.8
f
1
0.7
f
2
0.6
0.5
0.4
0.3
0.2
0.1
0
0.2
0.4
0.6
0.8
1
False positive rate
Figure 8.2
The ROC curves for two hypothetical scoring classifiers
f
1
and
f
2
, in which
a single classifier is not strictly dominant throughout the operating range.
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