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| • | Prediction
pay-off |
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| matrix
shows costs of |
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| false
negatives and false |
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| positives |
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| Predicted |
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| taken |
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| Predicted |
| not-taken |
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| Actual
branch |
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| delay
is |
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| PPTAT*CPTAT
+ |
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| PPNAT*CPNAT
+ |
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| PPTAN*CPTAN
+ |
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| PPNAN*CPNAN |
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| Asymmetry:
is it |
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| better
to have a |
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| false
negative, or a |
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| false
positive? |
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|
|
|
| Actually |
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| taken |
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|
|
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| PTAT |
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| true positive |
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|
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| PNAT |
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| false negative |
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| Actually |
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| not-taken |
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|
|
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| PTAN |
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| false positive |
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| PNAN |
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| True negative |
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| 23 |
