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Operating points for ROC curves #582

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srinivasn1 opened this issue Mar 31, 2021 · 4 comments
Closed

Operating points for ROC curves #582

srinivasn1 opened this issue Mar 31, 2021 · 4 comments

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@srinivasn1
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Is there a way to extract and save the threshold values to the output file that is read by the R plotting script?

@srinivasn1 srinivasn1 changed the title Threshold values for ROC curves Operating points for ROC curves Mar 31, 2021
@bhklein
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bhklein commented Mar 31, 2021

The ROC curve is generated in br -eval -- the CSV generated from this command contains the points. In this CSV file, take a look at the rows with DET as the first column. The X value is FAR, the Y value is FRR.

@bhklein bhklein closed this as completed Mar 31, 2021
@srinivasn1
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Ben, below is an example from the CSV file.

DET | 8.68878e-05 | 0.95966
  | FAR | 1.62742 | 8.68878e-05
  | FRR | 1.62742 | 0.95966

Does 1.62742 represent the threshold? I think this would be the correct assumption. At 1.627 the FAR is 8.68e-05 and the FRR is 0.95966?

@bhklein
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bhklein commented Mar 31, 2021

Got it, take a look at the FAR and FRR plots then. X should be the threshold.

@srinivasn1
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Great ! Thank you

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