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Difference between revisions of "Talk:Benchmark"
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I don't think it's fair to call the diagonal line in the FPR/TPR chart a "random guess" line. The FPR == TPR equation translates to FP/(FP+TN) == TP/(TP+FN), meaning FP*FN == TN*TP, or FP/TP == TN/FN. The FPR > TPR area below the line does not put the tool into a "worse than guessing" shame list. The last equation suggests a different interpretation of that area, "the noise rate in reporting suspects exceeds the silence rate about non-issues". | I don't think it's fair to call the diagonal line in the FPR/TPR chart a "random guess" line. The FPR == TPR equation translates to FP/(FP+TN) == TP/(TP+FN), meaning FP*FN == TN*TP, or FP/TP == TN/FN. The FPR > TPR area below the line does not put the tool into a "worse than guessing" shame list. The last equation suggests a different interpretation of that area, "the noise rate in reporting suspects exceeds the silence rate about non-issues". | ||
| − | The "worse than guessing" interpretation seems to come from the following scenario. We have | + | The "worse than guessing" interpretation seems to come from the following scenario. We have ''n'' real and ''m'' fake vulnerabilities. In each of the two groups, let the tool (or a monkey) decide which vulnerability is real. I guess this scenario ignores that the tool does not get the list of these vulnerabilities as its input. --[[User:Eelgheez|Eelgheez]] ([[User talk:Eelgheez|talk]]) 20:24, 13 July 2016 (CDT) |
Revision as of 01:31, 14 July 2016
The meaning of the diagonal
I don't think it's fair to call the diagonal line in the FPR/TPR chart a "random guess" line. The FPR == TPR equation translates to FP/(FP+TN) == TP/(TP+FN), meaning FP*FN == TN*TP, or FP/TP == TN/FN. The FPR > TPR area below the line does not put the tool into a "worse than guessing" shame list. The last equation suggests a different interpretation of that area, "the noise rate in reporting suspects exceeds the silence rate about non-issues".
The "worse than guessing" interpretation seems to come from the following scenario. We have n real and m fake vulnerabilities. In each of the two groups, let the tool (or a monkey) decide which vulnerability is real. I guess this scenario ignores that the tool does not get the list of these vulnerabilities as its input. --Eelgheez (talk) 20:24, 13 July 2016 (CDT)
