Ultralytics YOLO mAp: Curve ends in a linear curve instead of going to zero?

[csknkdhbw]

Hi everyone,
I got a question regarding the mAp-Image generations that are automatically generated by the DetectionValidator for YOLO-based object detection.

From the Recall Confidence Curve I can see, that recall is 0 for confidence > 0.82. So in the mAP-image, it should be like the red line that i drawn in, right? Is there some known error in the plotting?

[UltralyticsAssistant]

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[glenn-jocher]

@csknkdhbw thank you for your question! The mAP curve reflects the integration of precision-recall across all confidence thresholds, with interpolation applied to smooth the curve. The behavior you're observing is expected and not indicative of an error in plotting. For more details on how mAP is computed and visualized, you can refer to the YOLO Performance Metrics guide. If you need further clarification, feel free to ask!

[Y-T-G]

You can check this issue
#17270