For reference, see: Jaccard decay, Jaccard recall, and class-agnostic binary segmentation (SE:CS)

I know the meaning of the Jaccard index and the formula associated to it, but when it comes to Jaccard decay and Jaccard recall I am a bit confused.

I see both of them used for evaluation in segmentation tasks (i.e.Video Object Segmentation on DAVIS ). Can someone help me understand the difference between the Jaccard index and those two metrics or point me to a link so I can read about it ?

  • $\begingroup$ Hi and welcome to AI SE! Please, ask only one question. I provisionally closed this question until you ask only one question. $\endgroup$ – nbro May 10 at 11:04
  • $\begingroup$ Also, please, provide some context! Where did you read about these terms? $\endgroup$ – nbro May 11 at 15:52